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Nec Laboratories America Inc patents
Recent patent applications related to Nec Laboratories America Inc. Nec Laboratories America Inc is listed as an Agent/Assignee. Note: Nec Laboratories America Inc may have other listings under different names/spellings. We're not affiliated with Nec Laboratories America Inc, we're just tracking patents.
ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Nec Laboratories America Inc-related inventors
Automated meta parameter search for invariant based anomaly detectors in log analytics
Systems and methods for automatically generating a set of meta-parameters used to train invariant-based anomaly detectors are provided. Data is transformed into a first set of time series data and a second set of time series data. ... Nec Laboratories America Inc
Speculative scheduling in mobile networks
A system is provided for speculative scheduling that includes a base station having a processor. The processor computes an overall schedule for a set of clients. ... Nec Laboratories America Inc
Blue-printing interference for lte access in unlicensed spectrum
A system, method, and computer program product are provided for blue-printing interference for mobile access in an unlicensed spectrum of a synchronous scheduled cellular access system. The system includes a cellular base station having a processor. ... Nec Laboratories America Inc
Security system using automatic and scalable log pattern learning in security log analysis
A security system using automatic and scalable log pattern learning in security log analysis is provided. The security system includes one or more management services configured to generate security logs, and a security log analysis service operatively coupled to the one or more management services. ... Nec Laboratories America Inc
Automatic and scalable log pattern learning in security log analysis
A method for implementing automatic and scalable log pattern learning in security log analysis is provided. The method includes collecting security logs generated by a computer system. ... Nec Laboratories America Inc
Constellation optimization based on generalized mutual information over a nonlinear optical channel
Aspects of the present disclosure describe methods of generating an optimized set of constellation symbols for an optical transmission network wherein the optimized constellation is based on gmi cost and considers both fiber nonlinearity and linear transmission noise.. . ... Nec Laboratories America Inc
Secured hybrid coded modulation for 5g - and beyond - access networks
Aspects of the present disclosure describe systems, methods, and structures that advantageously provide hybrid free-space optical (fso)-radio frequency (rf) communication links (hfrcls) that enable building integrated software-defined network (sdn) infrastructure capable of integrating ultra-high-throughput satellite networks, composite wireless infrastructures, heterogeneous networks (hetnets), hybrid networks, satellite networks, and fiber-optics networks—among others.. . ... Nec Laboratories America Inc
Multi-layer adaptive power demand management for behind the meter energy management systems
Systems and methods for adaptive demand charge management in a behind the meter energy management system. The system and method includes determining, in a first layer, an initial demand charge threshold (dct), for a first period, based on historical dct profiles, and generating recursively, in a second layer, a forecast of a power demand for a second period, wherein the second period is a subset of the first period. ... Nec Laboratories America Inc
Method and system for incrementally learning log patterns on heterogeneous logs
Systems and methods for enabling automated log analysis with controllable resource requirements are provided. A training set for log pattern learning is generated based on heterogeneous logs generated by a computer system. ... Nec Laboratories America Inc
Learning efficient object detection models with knowledge distillation
A computer-implemented method executed by at least one processor for training fast models for real-time object detection with knowledge transfer is presented. The method includes employing a faster region-based convolutional neural network (r-cnn) as an objection detection framework for performing the real-time object detection, inputting a plurality of images into the faster r-cnn, and training the faster r-cnn by learning a student model from a teacher model by employing a weighted cross-entropy loss layer for classification accounting for an imbalance between background classes and object classes, employing a boundary loss layer to enable transfer of knowledge of bounding box regression from the teacher model to the student model, and employing a confidence-weighted binary activation loss layer to train intermediate layers of the student model to achieve similar distribution of neurons as achieved by the teacher model.. ... Nec Laboratories America Inc
A surveillance system is provided that includes a device configured to capture a video sequence, formed from a set of unlabeled testing video frames, of a target area. The surveillance system further includes a processor configured to pre-train a recognition engine formed from a reference set of cnns on a still image domain that includes labeled training still image frames. ... Nec Laboratories America Inc
Recognition in unlabeled videos with domain adversarial learning and knowledge distillation
An object recognition system is provided that includes a device configured to capture a video sequence formed from unlabeled testing video frames. The system includes a processor configured to pre-train a recognition engine formed from a reference set of cnns on a still image domain that includes labeled training still image frames. ... Nec Laboratories America Inc
An action recognition system is provided that includes a device configured to capture a video sequence formed from a set of unlabeled testing video frames. The system further includes a processor configured to pre-train a recognition engine formed from a reference set of cnns on a still image domain that includes labeled training still image frames. ... Nec Laboratories America Inc
A face recognition system is provided that includes a device configured to capture a video sequence formed from a set of unlabeled testing video frames. The system includes a processor configured to pre-train a face recognition engine formed from reference cnns on a still image domain that includes labeled training still image frames of faces. ... Nec Laboratories America Inc
Video surveillance system based on larger pose face frontalization
A video surveillance system is provided. The system includes a device configured to capture an input image of a subject located in an area. ... Nec Laboratories America Inc
Face recognition using larger pose face frontalization
A face recognition system is provided. The system includes a device configured to capture an input image of a subject. ... Nec Laboratories America Inc
Video retrieval system based on larger pose face frontalization
A video retrieval system is provided that includes a server for retrieving video sequences from a remote database responsive to a text specifying a face recognition result as an identity of a subject of an input image. The face recognition result is determined by a processor of the server, which estimates, using a 3dmm conditioned generative adversarial network, 3dmm coefficients for the subject of the input image. ... Nec Laboratories America Inc
Optically-secured adaptive software-defined optical sensor network architecture
A method and network are provided for a reconfigurable optical sensor network. The method includes configuring, by a controller, the reconfigurable optical sensor network, including one or more reconfigurable optical space switches, for a type of sensor data. ... Nec Laboratories America Inc
Link prediction with spatial and temporal consistency in dynamic networks
A computer-implemented method executed by at least one processor for performing link prediction with spatial and temporal consistency by employing a time-dependent matrix factorization technique is presented. The method includes developing, at a plurality of timestamps, relational data of a sequence of network structures each including a plurality of nodes and learning, by the at least one processor, a feature vector of each node of the plurality of nodes of the sequence of network structures by concurrently optimizing a temporal fitting constraint and a network propagation constraint. ... Nec Laboratories America Inc
Reconfigurable optical space switch
A method and switch are provided for reconfigurable optical space switch. The method includes receiving a control signal, from a controller, to configure a path through the reconfigurable optical space switch. ... Nec Laboratories America Inc
Transmitter/reciever with orbital angular momentum based optical encryption
A four-dimensional multiplexing method and four-dimensional multiplexing system are provided for optical networks. The method includes receiving sensor data to be transmitted on an optical network. ... Nec Laboratories America Inc
Antenna array based oam wireless communication
Systems and methods for orbital angular momentum (oam)-based multidimensional wireless communication. The oam-based multidimensional wireless communication is preformed with a transmitter for generating an rf modulated signal carrying a data sequence. ... Nec Laboratories America Inc
Multidimensional coded modulation for wireless communications with physical layer security
Systems and methods for quantum key distribution using orbital angular momentum (oam)-modes-enabled secure multidimensional coded modulation. The quantum key distribution including symbols of a raw key across subcarriers and multiplexing the subcarriers to form an electrical carrier. ... Nec Laboratories America Inc
Multidimensional coded modulation for wireless communications
Systems and methods for orbital angular momentum (oam)-based multidimensional signaling with multiple-input-multiple-output (mimo). The wireless communication is achieved using a transmitter including a plurality of orthogonal pulse shapers of a multidimensional modulator, the plurality of orthogonal pulse shapers generating a multidimensional modulated signal by imposing one or more data sequences on corresponding mutually orthogonal filter impulse responses derived from multiple orthogonal basis functions including slepian sequences. ... Nec Laboratories America Inc
Smart gateways for tracking cars in parking facilities
Systems and methods for detecting occupancy of at least one parking space by a vehicle are described. Detecting occupancy of at least one parking space includes at least one tag device fixed to a respective one of the at least one parking space. ... Nec Laboratories America Inc
Managing analog beams in mmwave networks
A computer-implemented method executed in a wireless communication system for establishing communication links in a millimeter wave network is presented. The method includes determining active communication links between a plurality of transmitters and a plurality of receivers operated by a plurality of users and formulating a quality of service (qos) proportional fairness (pf) network utility as a constrained submodular set function maximization problem. ... Nec Laboratories America Inc
Smart parking facility management by using wireless communication techniques to perform stationary and moving vehicle detection
Systems and methods for detecting occupancy of at least one parking space by a vehicle are described. Detecting occupancy of at least one parking space includes at least one tag device fixed to a respective one of the at least one parking space. ... Nec Laboratories America Inc
Dual connectivity in heterogeneous cellular networks
Methods and systems for assigning users to nodes include assigning user devices to respective macro nodes in a wireless network. Each of the user devices is assigned to a respective pico node in the wireless network. ... Nec Laboratories America Inc
Peer-based abnormal host detection for enterprise security systems
Systems and methods for determining a risk level of a host in a network include modeling a target host's behavior based on historical events recorded at the target host. One or more original peer hosts having behavior similar to the target host's behavior are determined. ... Nec Laboratories America Inc
Behavior-based community detection in enterprise information networks
Methods and systems for detecting host community include modeling a target host's behavior based on historical events recorded at the target host. One or more original peer hosts having behavior similar to the target host's behavior are found by determining a distance in a latent space that embeds the historical events between events of the target host and events of the one or more original peer hosts. ... Nec Laboratories America Inc
Behavior-based host modeling
Methods and systems for modeling host behavior in a network include determining a first probability function for observing each of a set of process-level events at a first host based on embedding vectors for the first event and the first host. A second probability function is determined for the first host issuing each of a set of network-level events connecting to a second host based on embedding vectors for the first host and the second host. ... Nec Laboratories America Inc
Content-level anomaly detection for heterogeneous logs
A computer-implemented method for automatically analyzing log contents received via a network and detecting content-level anomalies is presented. The computer-implemented method includes building a statistical model based on contents of a set of training logs and detecting, based on the set of training logs, content-level anomalies for a set of testing logs. ... Nec Laboratories America Inc
Data-driven demand charge management solution
A computer-implemented method, system, and computer program product are provided for demand charge management. The method includes receiving an active power demand for a facility, a current load demand charge threshold (dct) profile for the facility, and a plurality of previously observed load dct profiles. ... Nec Laboratories America Inc
Machine learning based demand charge
A computer-implemented method, system, and computer program product are provided for demand charge management. The method includes receiving an active power demand for a facility, a current load demand charge threshold (dct) profile for the facility, and a plurality of previously observed load dct profiles. ... Nec Laboratories America Inc
Structure-level anomaly detection for unstructured logs
A computer-implemented method, computer program product, and computer processing system are provided. The method includes preprocessing, by a processor, a set of heterogeneous logs by splitting each of the logs into tokens to obtain preprocessed logs. ... Nec Laboratories America Inc
Battery-free touch-aware user input using rfid tags
Aspects of the present disclosure describe a battery-free touch sensing user interface (ui) for internet of things (iot) and other smart spaces employing radio frequency identification (rfid) readers and tags that we call rio. With rio, any surface may be a touch-aware surface by attaching rfid tag(s) thereto. ... Nec Laboratories America Inc
Accurate object proposals by tracking detections
A system and method are provided. The system includes an image capture device configured to capture a video sequence formed from a set of input image frames and including a set of objects. ... Nec Laboratories America Inc
Surveillance system using accurate object proposals by tracking detections
A surveillance system and method are provided. The surveillance system includes an image capture device configured to capture a video sequence of a target area that includes a set of objects and is formed from a set of image frames. ... Nec Laboratories America Inc
Action recognition using accurate object proposals by tracking detections
An action recognition system and method are provided. The system includes an image capture device configured to capture a video sequence formed from image frames and depicting a set of objects. ... Nec Laboratories America Inc
Discovering critical alerts through learning over heterogeneous temporal graphs
A method is provided that includes transforming training data into a neural network based learning model using a set of temporal graphs derived from the training data. The method includes performing model learning on the learning model by automatically adjusting learning model parameters based on the set of the temporal graphs to minimize differences between a predetermined ground-truth ranking list and a learning model output ranking list. ... Nec Laboratories America Inc
Low-complexity brillouin optical time-domain reflectometers using syb-nyquist sampling
Methods and systems for brillouin optical time-domain reflectometry include optically filtering out non-brillouin signals reflected from a fiber. Brillouin signals reflected from the fiber are coupled with a local oscillator to produce a brillouin shift signals. ... Nec Laboratories America Inc
Advanced driver-assistance system using accurate object proposals by tracking detections
A system and method are provided for driving assistance. The system includes an image capture device configured to capture a video sequence, relative to an outward view from a vehicle, which includes a set of objects and is formed from a set of image frames. ... Nec Laboratories America Inc
Content-aware anomaly detection and diagnosis
Methods and systems for detecting a system fault include determining a network of broken correlations for a current timestamp, relative to a predicted set of correlations, based on a current set of sensor data. The network of broken correlations for the current timestamp is compared to networks of broken correlations for previous timestamps to determine a fault propagation pattern. ... Nec Laboratories America Inc
Advanced driver-assistance system with landmark localization on objects in images using convolutional neural networks
A system and method are provided for driving assistance. The system includes an image capture device configured to capture an actual image relative to an outward view from a motor vehicle and depicting an object. ... Nec Laboratories America Inc
Video security system using a siamese reconstruction convolutional neural network for pose-invariant face recognition
A computer-implemented method, system, and computer program product is provided for video security. The method includes monitoring an area with a camera. ... Nec Laboratories America Inc
Surveillance system with landmark localization on objects in images using convolutional neural networks
A surveillance system and method are provided. The surveillance system includes an image capture device configured to capture an actual image of a target area depicting an object. ... Nec Laboratories America Inc
Surveillance system using deep network flow for multi-object tracking
A surveillance system and method are provided. The surveillance system includes at least one camera configured to capture a set of images of a given target area that includes a set of objects to be tracked. ... Nec Laboratories America Inc
Deep network flow for multi-object tracking
A multi-object tracking system and method are provided. The multi-object tracking system includes at least one camera configured to capture a set of input images of a set of objects to be tracked. ... Nec Laboratories America Inc
System and method for learning random-walk label propagation for weakly-supervised semantic segmentation
Systems and methods for training semantic segmentation. Embodiments of the present invention include predicting semantic labeling of each pixel in each of at least one training image using a semantic segmentation model. ... Nec Laboratories America Inc
Landmark localization on objects in images using convolutional neural networks
A system and method are provided. The system includes an image capture device configured to capture an actual image depicting an object. ... Nec Laboratories America Inc
Siamese reconstruction convolutional neural network for pose-invariant face recognition
A computer-implemented method, system, and computer program product is provided for pose-invariant facial recognition. The method includes generating, by a processor using a recognition neural network, a rich feature embedding for identity information and non-identity information for each of one or more images. ... Nec Laboratories America Inc
Action recognition system with landmark localization on objects in images using convolutional neural networks
An action recognition system and method are provided. The action recognition system includes an image capture device configured to capture an actual image depicting an object. ... Nec Laboratories America Inc
Systems and methods with a realtime log analysis framework
Systems and methods are disclosed for processing a stream of logged data by: creating one or more models from a set of training logs during a training phase; receiving testing data in real-time and generating anomalies using the models created during the training phase; updating the one or more models during real-time processing of a live stream of logs; and detecting a log anomaly from the live stream of logs.. . ... Nec Laboratories America Inc
Dynamic scene prediction with multiple interacting agents
Methods and systems for predicting a trajectory include determining prediction samples for agents in a scene based on a past trajectory. The prediction samples are ranked according to a likelihood score that incorporates interactions between agents and semantic scene context. ... Nec Laboratories America Inc
Video retrieval system using adaptive spatiotemporal convolution feature representation with dynamic abstraction for video to language translation
A video retrieval system is provided, that includes a set of servers, configured to retrieve a video sequence from a database and forward it to a requesting device responsive to a match between an input text and a caption for the video sequence. The servers are further configured to translate the video sequence into the caption by (a) applying a c3d to image frames of the video sequence to obtain therefor (i) intermediate feature representations across l convolutional layers and (ii) top-layer features, (b) producing a first word of the caption for the video sequence by applying the top-layer features to a lstm, and (c) producing subsequent words of the caption by (i) dynamically performing spatiotemporal attention and layer attention using the representations to form a context vector, and (ii) applying the lstm to the context vector, a previous word of the caption, and a hidden state of the lstm.. ... Nec Laboratories America Inc
Context-aware attention-based neural network for interactive question answering
A context-aware attention-based neural network is provided for answering an input question given a set of purportedly supporting statements for the input question. The neural network includes a processing element. ... Nec Laboratories America Inc
Translating video to language using adaptive spatiotemporal convolution feature representation with dynamic abstraction
A system is provided for video captioning. The system includes a processor. ... Nec Laboratories America Inc
Surveillance system using adaptive spatiotemporal convolution feature representation with dynamic abstraction for video to language translation
A surveillance system is provided that includes an image capture device configured to capture a video sequence of a target area that includes objects and is formed from a set of image frames. The system further includes a processor configured to apply a c3d to the image frames to obtain therefor (i) intermediate feature representations across l convolutional layers and (ii) top-layer features. ... Nec Laboratories America Inc
3d waveguide for efficient coupling of multimode pump and signals to a multicore fiber amplifier
An optical communication substrate includes a plurality of cores to communicate optical signals; a rectangular input delivering a pump laser, and a shaped portion to combine the optical signals and the pump laser into a ring geometry at an output.. . ... Nec Laboratories America Inc
Structural event detection from log messages
Aspects of the present disclosure describe structural event detection from system log messages. More particularly disclosed are computer-implemented methods to mine structural events as directed workflow graphs where nodes of the graphs represent log patterns and edges represent relations among patterns. ... Nec Laboratories America Inc
Optical chaos based wireless device fingerprinting
A computer-implemented method for authenticating an access point attempting to access a wireless network is presented. The computer-implemented method includes receiving an authentication challenge from the access point, analyzing the authentication challenge at a wireless node by using an optical chaos generation module having an optical section and a radio frequency (rf) section to facilitate reproducibility, unpredictability, and unclonability of challenge-response pairs, and transmitting an authentication response to the access point.. ... Nec Laboratories America Inc
Extending system reach of unrepeated systems using cascaded amplifiers
An unrepeatered transmission system includes a receiver coupled to a receive span; a transmitter coupled to the receive span; and a plurality of cascaded amplifiers in the receive span with dedicated fiber cores to supply one or more optical pumps from the receiver to each amplifier, wherein the plurality of cascaded amplifiers increase system reach by increasing the length of a back span in an unrepeatered link.. . ... Nec Laboratories America Inc
Joint source and ldpc coding based coding modulation for ultra-high-speed optical transport
A method for optical communication includes combining jointly source coding with ldpc channel coding into a nonuniform signalling by mapping low-complexity variable-length prefix codes onto a constellation; and performing arbitrary nonuniform signalling, where information bits and parity bits are transmitted with different modulation schemes.. . ... Nec Laboratories America Inc
Dynamic frequency control scheme for microgrids using energy storage
Aspects of the present disclosure describe methods and systems for improved control strategies for dynamic frequency control (dfc) of energy storage (es) devices which may be used to determine an amount of intertial support required from es to provide frequency regulation based on type of disturbance and frequency control system of a microgrid. A case study showing the control strategy for dfc scheme is presented.. ... Nec Laboratories America Inc
Stochastic demand charge management system and method
Systems and methods for minimizing demand charges includes generating historical demand profiles having a plurality of demand charge threshold (dct) values over a period of time, filtering the dct values using weighting factors to provide filtered dct values such that dct underestimations and overestimations are removed from optimization, determining an optimal dct output value from the filtered dct values such that the optimal dct output value is based on the historical demand profiles and the weighting factors, and distributing energy in one or more batteries in accordance with the optimal dct output value and current energy demand to minimize energy and demand charges.. . ... Nec Laboratories America Inc
Link packing in mmwave networks
A computer-implemented method for establishing communication links in a millimeter wave (mmwave) network by solving a linear integer packing problem is presented. The computer-implemented method includes determining active communication links between a plurality of transmitters and a plurality of receivers, setting each active communication link to have any arbitrary chosen weight or priority, and setting a minimum link quality threshold for each active communication link and subjecting each active communication link to constraints. ... Nec Laboratories America Inc
Mu-mimo in mmwave systems
A computer-implemented method is provided for downlink scheduling in a mu-mimo telecommunication system. The method includes identifying for each of multiple virtual users which collectively form a ground set of virtual users, a respective transmit precoder and receive beamformer combination that maximizes a difference between two submodular set functions applied over the ground set of virtual users, from among a plurality of combinations formed from a respective one of a plurality of transmit precoders and a respective one of a plurality of receive beamformers. ... Nec Laboratories America Inc
Advanced driver-assistance system
A computer-implemented method and system are provided for driving assistance. The system includes an image capture device configured to capture image data relative to an outward view from a motor vehicle. ... Nec Laboratories America Inc
Video to radar
A computer-implemented method and system are provided. The system includes an image capture device configured to capture image data relative to an ambient environment of a user. ... Nec Laboratories America Inc
Mining non-linear dependencies via a neighborhood mixture model
A computer-implemented method for simultaneous metric learning and variable selection in non-linear regression is presented. The computer-implemented method includes introducing a dataset and a target variable, creating a univariate neighborhood probability map for each reference point of the dataset, and determining a pairwise distance between each reference point and other points within the dataset. ... Nec Laboratories America Inc
Fine-grained causal anomaly inference for complex system fault diagnosis
A computer-implemented method for diagnosing system faults by fine-grained causal anomaly inference is presented. The computer-implemented method includes identifying functional modules impacted by causal anomalies and backtracking causal anomalies in impaired functional modules by a low-rank network diffusion model. ... Nec Laboratories America Inc
Recommender system for heterogeneous log pattern editing operation
A heterogeneous log pattern editing recommendation system and computer-implemented method are provided. The system has a processor configured to identify, from heterogeneous logs, patterns including variable fields and constant fields. ... Nec Laboratories America Inc
Stage-wise mini batching to improve cache utilization
A computer-implemented method is provided for neural network training. The method includes improving a cache utilization by one or more processors during multiple training stages of a neural network, by performing a stage-wise mini-batch process on a set of samples used for the multiple training stages. ... Nec Laboratories America Inc
Video system using dual stage attention based recurrent neural network for future event prediction
Systems and devices including an imaging sensor to capture video sequences in an environment having safety concerns therein. The systems and devices further including a processor to generate driving series based on observations from the video sequences, and generate predictions of future events based on the observations using a dual-stage attention-based recurrent neural network (da-rnn). ... Nec Laboratories America Inc
Dual stage attention based recurrent neural network for time series prediction
Systems and methods for time series prediction are described. The systems and methods include encoding driving series into encoded hidden states, the encoding including adaptively prioritizing driving series at each timestamp using input attention, the driving series including data sequences collected from sensors. ... Nec Laboratories America Inc
Security monitoring with progressive behavioral query language databases
Automated security systems and methods include a set monitored systems, each having one or more corresponding monitors configured to record system state information. A progressive software behavioral query language (probeql) database is configured to store the system state information from the monitored systems. ... Nec Laboratories America Inc
Progressive processing for querying system behavior
Methods for querying a database and database systems include optimizing a database query for parallel execution using spatial and temporal information relating to elements in the database, the optimized database query being split into sub-queries with sub-queries being divided spatially according to host and temporally according to time window. The sub-queries are executed in parallel. ... Nec Laboratories America Inc
Multibyte heterogeneous log preprocessing
Methods and systems for log management include pre-processing heterogeneous logs and performing a log management action on the pre-processed plurality of heterogeneous logs. Pre-processing the logs includes performing a fixed tokenization of the heterogeneous logs based on a predefined set of symbols, performing a flexible tokenization of the heterogeneous logs based on a user-defined set of rules, converting timestamps in the heterogeneous logs to a single target timestamp format, and performing structural log tokenization of the heterogeneous logs based on user-defined structural information.. ... Nec Laboratories America Inc
Face recognition using stage-wise mini batching to improve cache utilization
A face recognition system and method for face recognition are provided. The face recognition system includes a camera for capturing an input image of a face of a person to be recognized. ... Nec Laboratories America Inc
Blackbox program privilege flow analysis with inferred program behavior context
A computer-implemented method for performing privilege flow analysis is presented. The computer-implemented method includes monitoring at least one program operating system (os) event handled by a program, generating a privilege flow graph, determining an inferred program behavior context, and generating, based on a combination of the privilege flow graph and the inferred program behavior context, an inferred behavior context-aware privilege flow graph to distinguish different roles of processes and/or threads within the program.. ... Nec Laboratories America Inc
Power generation systems with monitoring for anomaly detection via nonlinear relationship modeling
A power generator system with anomaly detection and methods for detecting anomalies include a power generator that includes one or more physical components configured to provide electrical power. Sensors are configured to make measurements of a state of respective physical components, outputting respective time series of said measurements. ... Nec Laboratories America Inc
Anomaly detection for complex physical system via nonlinear relationship modeling
Methods and systems for detecting anomalies include determining a predictive model for each pair of a set of time series, each time series being associated with a component of a system. New values of each pair of time series are compared to values predicted by the respective predictive model to determine if the respective predictive model is broken. ... Nec Laboratories America Inc
Fine-grained analysis and prevention of invalid privilege transitions
A computer-implemented method for analyzing operations of privilege changes is presented. The computer-implemented method includes inputting a program and performing source code analysis on the program by generating a privilege control flow graph (pcfg), generating a privilege data flow graph (pdfg), and generating a privilege call context graph (pccg). ... Nec Laboratories America Inc
Automated blackbox inference of external origin user behavior
Methods and systems for security analysis include determining whether a process has an origin internal to a system or external to the system using a processor based on monitored behavior events associated with the process. A security analysis is performed on only processes that have an external origin to determine if any of the processes having an external origin represent a security threat. ... Nec Laboratories America Inc
Distributed acoustic sensing in a multicore optical fiber using distributed mode coupling and delay
A system and method are provided for distributed acoustic sensing in a multicore optical fiber. The system includes a transmitter for simultaneously propagating a sequence of m light pulses through the multicore optical fiber using a spatial mode selected from a set of n spatial modes provided by a spatial mode selector for the transmitter that is coupled to an input to the multicore optical fiber, with m and n being respective integers greater than one. ... Nec Laboratories America Inc
Distributed acoustic sensing in a multimode optical fiber using distributed mode coupling and delay
A system and method are provided for distributed acoustic sensing in a multimode optical fiber. The system includes a transmitter for simultaneously propagating a sequence of m light pulses through the multimode optical fiber using a spatial mode selected from a set of n spatial modes provided by a spatial mode selector for the transmitter that is coupled to an input to the multimode optical fiber, with m and n being respective integers greater than one. ... Nec Laboratories America Inc
Constructing graph models of event correlation in enterprise security systems
Methods and systems for detecting anomalous events include detecting anomalous events in monitored system data. An event correlation graph is generated by determining a tendency for a first process to access a system target, including an innate tendency of the first process to access the system target, an influence of previous events from the first process, and an influence of processes other than the first process. ... Nec Laboratories America Inc
Two-level predictive based reactive power coordination and voltage restoration for microgrids
A computer-implemented method for controlling voltage fluctuations of a microgrid including a plurality of distributed generators (dgs) is presented. The computer-implemented method includes collecting, by a resiliency controller, measurement data from the microgrid, using a model predictive control (mpc) module to distribute reactive power to each of the dgs of the microgrid, and using a droop based controller to guide operation of each of the dgs of the microgrid.. ... Nec Laboratories America Inc
Online alert ranking and attack scenario reconstruction
Methods and systems for detecting security intrusions include detecting alerts in monitored system data. Temporal dependencies are determined between the alerts based on a prefix tree formed from the detected alerts. ... Nec Laboratories America Inc
Graph-based attack chain discovery in enterprise security systems
Methods and systems for detecting anomalous events include detecting anomalous events in monitored system data. An event correlation graph is generated based on the monitored system data that characterizes the tendency of processes to access system targets. ... Nec Laboratories America Inc
Constellation design for use in communication systems
Methods and systems for communication with a modified constellation are provided. One of the methods includes coding, by a transmitter in the user equipment, an input data stream into a constellation of symbols having at least two neighboring symbols therein which differ by more than one bit and which are separated by a modified euclidean distance to increase a gaussian white noise resiliency of the at least two neighboring symbols with respect to remaining symbols, the remaining symbols being separated by the euclidean distance of exactly one bit. ... Nec Laboratories America Inc
Distributed acoustic sensing system based on delayed optical hybrid phase demodulator
A sensing system adapted to receive backscattered signal from a sensing fiber includes a first faraday rotator mirror; a second faraday rotator mirror; an optical hybrid coupled to the faraday rotator mirrors, wherein one of the mirrors is coupled with an optical path difference; a 3-port optical circulator coupled to the sensing fiber and the optical hybrid; a first photodetector coupled to the circulator; and three photodetectors coupled to the optical hybrid.. . ... Nec Laboratories America Inc
Passive pruning of filters in a convolutional neural network
Methods and systems of training a neural network includes training a neural network based on training data. Weights of a layer of the neural network are multiplied by an attrition factor. ... Nec Laboratories America Inc
Passive pruning of filters in a convolutional neural network
Methods and systems for pruning a convolutional neural network (cnn) include calculating a sum of weights for each filter in a layer of the cnn. The filters in the layer are sorted by respective sums of weights. ... Nec Laboratories America Inc
Security system using a convolutional neural network with pruned filters
Security systems and methods for detecting intrusion events include one or more sensors configured to monitor an environment. A pruned convolutional neural network (cnn) is configured process information from the one or more sensors to classify events in the monitored environment. ... Nec Laboratories America Inc
System and method for reducing time-averaged peak charges
Systems and methods for minimizing demand charges, including determining one or more optimal monthly demand charge thresholds based on historical load data, time of use charges, demand charges, and energy storage unit size for one or more end users. A grid power dispatch setpoint is calculated for a particular time step based on a daily load forecast and a daily economic dispatch solution based on the determined optimal monthly demand charge thresholds. ... Nec Laboratories America Inc
System fault diagnosis via efficient temporal and dynamic historical fingerprint retrieval
Methods are provided for both single modal and multimodal fault diagnosis. In a method, a fault fingerprint is constructed based on a fault event using an invariant model. ... Nec Laboratories America Inc
Video-based action recognition security system
A video monitoring system and method are provided. The video monitoring system includes a camera. ... Nec Laboratories America Inc
Deep high-order exemplar learning for hashing and fast information retrieval
A system and method are provided for deep high-order exemplar learning of a data set. Feature vectors and class labels are received. ... Nec Laboratories America Inc
Multi-modal driving danger prediction system for automobiles
A computer-implemented method for training a deep neural network to recognize traffic scenes (tss) from multi-modal sensors and knowledge data is presented. The computer-implemented method includes receiving data from the multi-modal sensors and the knowledge data and extracting feature maps from the multi-modal sensors and the knowledge data by using a traffic participant (ts) extractor to generate a first set of data, using a static objects extractor to generate a second set of data, and using an additional information extractor. ... Nec Laboratories America Inc
Video capturing device for predicting special driving situations
A video device for predicting driving situations while a person drives a car is presented. The video device includes multi-modal sensors and knowledge data for extracting feature maps, a deep neural network trained with training data to recognize real-time traffic scenes (tss) from a viewpoint of the car, and a user interface (ui) for displaying the real-time tss. ... Nec Laboratories America Inc
Deep 3d attention long short-term memory for video-based action recognition
A method, a computer program product, and a system are provided for video based action recognition. The system includes a processor. ... Nec Laboratories America Inc
Extraction and comparison of hybrid program binary features
Systems and methods for identifying similarities in program binaries, including extracting program binary features from one or more input program binaries to generate corresponding hybrid features. The hybrid features include a reference feature, a resource feature, an abstract control flow feature, and a structural feature. ... Nec Laboratories America Inc
Mobile phone with system failure prediction using long short-term memory neural networks
Mobile phones and methods for mobile phone failure prediction include receiving respective log files from one or more mobile phone components, including at least one user application. The log files have heterogeneous formats. ... Nec Laboratories America Inc
System failure prediction using long short-term memory neural networks
Methods for system failure prediction include clustering log files according to structural log patterns. Feature representations of the log files are determined based on the log clusters. ... Nec Laboratories America Inc
Large margin high-order deep learning with auxiliary tasks for video-based anomaly detection
A computer-implemented method and system are provided for video-based anomaly detection. The method includes forming, by a processor, a deep high-order convolutional neural network (dhocnn)-based model having a one-class support vector machine (svm) as a loss layer of the dhocnn-based model. ... Nec Laboratories America Inc
Blue print graphs for fusing of heterogeneous alerts
Methods and systems for reporting anomalous events include building a process graph that models states of process-level events in a network. A topology graph is built that models source and destination relationships between connection events in the network. ... Nec Laboratories America Inc
Graph-based fusing of heterogeneous alerts
Methods and systems for reporting anomalous events include intra-host clustering a set of alerts based on a process graph that models states of process-level events in a network. Hidden relationship clustering is performed on the intra-host clustered alerts based on hidden relationships between alerts in respective clusters. ... Nec Laboratories America Inc
Real-time deep learning for danger prediction using heterogeneous time-series sensor data
A computer-implemented method and a system are provided for, in turn, providing driver assistance for a vehicle. The method includes forming, by a processor, a deep high-order long short-term memory (holstm)-based model by applying, to a holstm, high-order interactions captured between global pattern distribution probabilities and local feature representations of an input sensor signal vector at each of a plurality of time steps. ... Nec Laboratories America Inc
Large margin high-order deep learning with auxiliary tasks for video-based anomaly detection
A video camera is provided for video-based anomaly detection that includes at least one imaging sensor configured to capture video sequences in a workplace environment having a plurality of machines therein. The video camera further includes a processor. ... Nec Laboratories America Inc
Automated event id field analysis on heterogeneous logs
A system, program, and method for anomaly detection in heterogeneous logs. The system having a processor configured to identify pattern fields comprised of a plurality of event identifiers. ... Nec Laboratories America Inc
3-dimensional inscripted wdm coupler for optical amplifiers and methods for using 3-dimensional inscripted wdm couplers in networks
A 3-dimensional (3-d) inscripted wavelength division multiplexer (wdm) coupler for optical amplifiers is provided. The 3-d wdm coupler includes a substrate. ... Nec Laboratories America Inc
Efficient video annotation with optical flow based estimation and suggestion
A computer-implemented method is provided for video annotation of a video sequence that includes a plurality of frames. The method includes storing, by a computer, information representative of a bounding box around a given target object in the video sequence in both a first frame and a last frame of the video sequence that include the target object. ... Nec Laboratories America Inc
Early warning prediction system
A computer-implemented method provides an early warning of an impending failure in a monitored system. The method includes performing, by a processor, an offline model learning process that generates a model of expected log rates in the monitored system from historical log data. ... Nec Laboratories America Inc
Invariants modeling and detection for heterogeneous logs
A method is provided that is performed in a network having nodes that generate heterogeneous logs including performance logs and text logs. The method includes performing, during a heterogeneous log training stage, (i) a log-to-time sequence conversion process for transforming clustered ones of training logs, from among the heterogeneous logs, into a set of time sequences that are each formed as a plurality of data pairs of a first configuration and a second configuration based on cluster type, (ii) a time series generation process for synchronizing particular ones of the time sequences in the set based on a set of criteria to output a set of fused time series, and (iii) an invariant model generation process for building invariant models for each time series data pair in the set of fused time series. ... Nec Laboratories America Inc
Real-time detection of abnormal network connections in streaming data
A computer-implemented method for real-time detecting of abnormal network connections is presented. The computer-implemented method includes collecting network connection events from at least one agent connected to a network, recording, via a topology graph, normal states of network connections among hosts in the network, and recording, via a port graph, relationships established between host and destination ports of all network connections.. ... Nec Laboratories America Inc
Resiliency controller for frequency regulation in islanded microgrid
Aspects of the present disclosure describe structures of, and methods for operating a resiliency controller in an islanded microgrid. The resiliency controller exhibits a dynamic droop algorithm for frequency control, employs multiple modules including a frequency control module for microgrid frequency regulation and a state-of-charge (soc) based dynamic droop control unit.. ... Nec Laboratories America Inc
System and method for dynamic provisioning of wi-fi capacity in large venues using c-ran architecture
A computer-implemented method for dynamic provisioning of wi-fi capacity in areas using a centralized radio access network (c-ran) architecture is presented. The computer-implemented method includes introducing a set of access points (aps) in a network for providing capacity required to serve a plurality of users accessing heterogeneous content, introducing a set of remote radio heads (rrhs) in the network acting as transmit/receive points, tracking traffic fluctuations, and adapting front-haul configurations at a granularity of epochs, where measurements from previous epochs serve as input to drive current epochs.. ... Nec Laboratories America Inc
Enabling technologies for lte on unlicensed spectrum
Methods and a system are provided for enabling coexistence of wifi and long term evolution (lte) in a wireless communication system. A method includes embedding in a data sequence, by a base station capable of transmitting and receiving lte frames, a channel reservation packet that (i) is detectable by a wifi receiver and (ii) reserves a particular one of a plurality of available unlicensed communication channels for a transmission duration of the data sequence. ... Nec Laboratories America Inc
Deep deformation network for object landmark localization
A system and method are provided. The system includes a processor. ... Nec Laboratories America Inc
Optimal battery sizing for behind-the-meter applications considering participation in demand response programs and demand charge reduction
A system and method are provided. The system includes a processor. ... Nec Laboratories America Inc
Recursive neural networks on future event prediction
Systems and methods for training a recursive neural network (rnn) is provided. The method includes generating, by the processor using the rnn, a plurality of embedding vectors based on a plurality of observations, wherein the observations include (i) a subject, (ii) an action taken by the subject, and (iii) an object on which the subject is taking the action on, wherein the subject and object are constant. ... Nec Laboratories America Inc
Video camera device and system using recursive neural networks for future event prediction
A camera device and camera system for video-based workplace safety is provided. The camera device includes at least one imaging sensor configured to capture one or more video sequences in a workplace environment having a plurality of machines therein. ... Nec Laboratories America Inc
Intrusion detection using efficient system dependency analysis
Methods and systems for intrusion detection include determining a causality trace for a flagged event. Determining the causality trace includes identifying a hot process that generates bursts of events with interleaved dependencies, aggregating events related to the hot process according to a process-centric dependency approximation that ignores dependencies between the events related to the hot process, and tracking causality in a reduced event stream that comprises the aggregated events. ... Nec Laboratories America Inc
High fidelity data reduction for system dependency analysis
Methods and systems for dependency tracking include identifying a hot process that generates bursts of events with interleaved dependencies. Events related to the hot process are aggregated according to a process-centric dependency approximation that ignores dependencies between the events related to the hot process. ... Nec Laboratories America Inc
Autonomous operational platform for micro-grid energy management
A computer-implemented method is provided for managing a plurality of micro grids in an energy system. The method includes collecting and maintaining, in a central database, configuration information and state information for the plurality of micro grids, by a processor-based dynamic operation engine. ... Nec Laboratories America Inc
Scalable supervised high-order parametric embedding for big data visualization
A method is provided for scalable supervised high-order parametric embedding for big data visualization. The method is performed by a processor and includes receiving feature vectors and class labels. ... Nec Laboratories America Inc
Fast pattern discovery for log analytics
Systems and methods are disclosed for parsing logs from arbitrary or unknown systems or applications by capturing heterogeneous logs from the arbitrary or unknown systems or applications; generating one pattern for every unique log message; building a pattern hierarchy tree by grouping patterns based on similarity metrics, and for every group it generates one pattern by combing all constituting patterns of that group; and selecting a set of patterns from the pattern hierarchy tree.. . ... Nec Laboratories America Inc
Anomaly fusion on temporal casualty graphs
An exemplary method for detecting one or more anomalies in a system includes building a temporal causality graph describing functional relationship among local components in normal period; applying the causality graph as a propagation template to predict a system status by iteratively applying current system event signatures; and detecting the one or more anomalies of the system by examining related patterns on the template causality graph that specifies normal system behaviors. The system can aligning event patterns on the causality graph to determine an anomaly score.. ... Nec Laboratories America Inc
Resilient battery charging strategies to reduce battery degradation and self-discharging
Computer-implemented methods and, a system are provided. A method includes constructing by an energy management system (ems), one or more optimization-based techniques for resilient battery charging based on an optimization problem having an ems cost-based objective function. ... Nec Laboratories America Inc
Semantic segmentation based on global optimization
Methods and systems for data segmentation include determining initial segmentation scores for each unit of an input data set using a neural network, with each unit being assigned an initial segmentation score for each of multiple segmentation classes. Final segmentation scores are determined for each unit of the input data set by enforcing a smoothness criterion. ... Nec Laboratories America Inc
Accelerating deep neural network training with inconsistent stochastic gradient descent
Aspects of the present disclosure describe techniques for training a convolutional neural network using an inconsistent stochastic gradient descent (isgd) algorithm. Training effort for training batches used by the isgd algorithm are dynamically adjusted according to a determined loss for a given training batch which are classified into two sub states—well-trained or under-trained. ... Nec Laboratories America Inc
Distance metric learning with n-pair loss
A method includes receiving n pairs of training examples and class labels therefor. Each pair includes a respective anchor example, and a respective non-anchor example capable of being a positive or a negative training example. ... Nec Laboratories America Inc
Video monitoring using semantic segmentation based on global optimization
Methods and systems for monitoring a video feed include capturing input data representing a monitored area using one or more cameras to produce an input data set comprising individual images. Initial segmentation scores are determined for each image of the input data set using a neural network, with each image being assigned an initial segmentation score for each of multiple segmentation classes. ... Nec Laboratories America Inc
Ranking causal anomalies via temporal and dynamical analysis on vanishing correlations
A method is provided for root cause anomaly detection in an invariant network having a plurality of nodes that generate time series data. The method includes modeling anomaly propagation in the network. ... Nec Laboratories America Inc
Risky behavior query construction and execution
Systems and a method are provided. A system includes a temporal behavior query language (tbql) server having a processor and a memory operably coupled to the processor. ... Nec Laboratories America Inc
Multi-layer optimal chiller operation management framework
Aspects of the present disclosure describe a multi-layer chiller operation management framework and associated methods for managing heating, ventilation, and air conditioning (hvac) multi-chiller unit operation in real time serving varying system loads. According to the present disclosure, the framework includes two layers—a first layer providing 24-hour chiller operation planning thereby optimizing chiller operation using forecasted load profiles to minimize energy consumption. ... Nec Laboratories America Inc
Multimode elliptical core optical data transmission
Methods and system for transmitting data includes converting multiple optical beams to distinct respective spatial modes. Data is modulated onto each of the optical beams. ... Nec Laboratories America Inc
Bi-directional transmission over an elliptical core optical fiber
Systems and methods for optical communication are disclosed that include communicating data using one or more transceiver pairs coupled to a spatial-multiplexer (s-mux); performing bi-directional transmissions over an elliptical core optical fiber to a spatial-demultiplexer (s-demux) using spatial modes to communicate data in either direction between two transceiver pairs with low crosstalk and without optical circulators or wavelength-division multiplexing (wdm); and communicating data from the s-demux with g one or more transceiver pairs.. . ... Nec Laboratories America Inc
Remote sensing of an object's direction of lateral motion using phase difference based orbital angular momentum spectroscopy
A system for sensing a remote object includes a light beam for illuminating the remote object; a sensor to determine an orbital angular momentum (oam) of the light beam; and a processor with code to determine the remote object's direction of lateral motion.. . ... Nec Laboratories America Inc
Method to increase the signal to noise ratio of distributed acoustic sensing by spatial averaging
A system to perform distributed acoustic sensing (das) in an environment with acoustic vibrations present includes at least an optical fiber positioned in said environment, wherein the optical fiber comprises n spatial channels and n laser pulses are launched into the n spatial channels of the optical fiber and propagate over a fiber length; and one or more sensors to measure n signals of acoustic vibration amplitude and frequency from each of n spatial channels, wherein the n signals are digitally added for spatial averaging and applied to determine das.. . ... Nec Laboratories America Inc
Indoor positioning system with fast plan mapping
An in-door positioning system for a building includes three or more external positioning devices (epds), wherein the epd is capable of calculating the distance between each other; a floor plan module with a floor plan map of the building, for a building level of interest; and relative positions of the epds; and an indoor positioning device positioned at a predetermined distance to each of the epds.. . ... Nec Laboratories America Inc
Networked systems for monitoring fire extinguisher operational readiness
Aspects of the present disclosure describe apparatus, methods and systems for monitoring the operational status of fire extinguishers through the utilization of optically sensed, color profile determinations of a pressure gauge positioned on the fire extinguisher as well as the utilization of vibrational, and location sensing devices. Advantageously, monitoring apparatus according to the present disclosure are networkable, and a number of their operational characteristics may be configured via the network and associated servers. ... Nec Laboratories America Inc
Apparatus, methods, and systems for monitoring fire extinguisher operational readiness
Aspects of the present disclosure describe apparatus, methods and systems for monitoring the operational status of fire extinguishers through the utilization of optically sensed, color profile determinations of a pressure gauge positioned on the fire extinguisher as well as the utilization of vibrational, and location sensing devices. Advantageously, monitoring apparatus according to the present disclosure are networkable, and a number of their operational characteristics may be configured via the network and associated servers. ... Nec Laboratories America Inc
Data routing in hybrid wireless communication networks
Data is routed in a mesh network of devices that can communicate wirelessly through a plurality of technologies. One or more of such devices receive broadcast message(s) from a destination device intended to receive the data, and generate a first radio link quality metric (rlqm) value based on the broadcast message(s). ... Nec Laboratories America Inc
Multi-parameter sensing based on few-mode fiber bragg gratings using femtosecond ir laser
A sensor system includes a femtosecond infrared (fs-ir) laser to generate a laser beam; a reflecting mirror optically receiving the laser beam; a lens optically coupled to the reflecting mirror to focus the laser beam; a phase mask receiving the laser beam from the lens to generate an index modulated pattern; and a few-mode fiber (fmf) receiving the index modulated pattern.. . ... Nec Laboratories America Inc
Consistent hashing
Computer-implemented methods and a system are provided for distributing tasks between a plurality of processes in a computer network. A method includes distributing, by a load balancer in the computer network, tasks between the plurality of processes. ... Nec Laboratories America Inc
Long term driving danger prediction system
Systems and methods are disclosed to assist a driver with a dangerous condition by creating a graph representation where traffic participants and static elements are the vertices and the edges are relations between pairs of vertices; adding attributes to the vertices and edges of the graph based on information obtained on the driving vehicle, the traffic participants and additional information; creating a codebook of dangerous driving situations, each represented as graphs; performing subgraph matching between the graphs in the codebook and the graph representing a current driving situation to select a set of matching graphs from the codebook; determining a distance metric between each selected codebook graphs and the matching subgraph of the current driving situation; from codebook graphs with a low distance, determining potential dangers; and generating an alert if one or more of the codebook dangers are imminent.. . ... Nec Laboratories America Inc
Automated anomaly detection service on heterogeneous log streams
Systems and methods are disclosed for handling log data from one or more applications, sensors or instruments by receiving heterogeneous logs from arbitrary/unknown systems or applications; generating regular expression patterns from the heterogeneous log sources using machine learning and extracting a log pattern therefrom; generating models and profiles from training logs based on different conditions and updating a global model database storing all models generated over time; tokenizing raw log messages from one or more applications, sensors or instruments running a production system; transforming incoming tokenized streams are into data-objects for anomaly detection and forwarding of log messages to various anomaly detectors; and generating an anomaly alert from the one or more applications, sensors or instruments running a production system.. . ... Nec Laboratories America Inc
Periodicity analysis on heterogeneous logs
Systems and methods are disclosed for detecting periodic event behaviors from machine generated logging by: capturing heterogeneous log messages, each log message including a time stamp and text content with one or more fields; recognizing log formats from log messages; transforming the text content into a set of time series data, one time series for each log format; during a training phase, analyzing the set of time series data and building a category model for each periodic event type in heterogeneous logs; and during live operation, applying the category model to a stream of time series data from live heterogeneous log messages and generating a flag on a time series data point violating the category model and generating an alarm report for the corresponding log message.. . ... Nec Laboratories America Inc
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