公开(公告)号：US20170300632A1

公开(公告)日：2017-10-19

申请号：US15489023

申请日：2017-04-17

Applicant: NEC Laboratories America, Inc.

Inventor： Bing Bai

IPC: G06F19/00 ,  G06N99/00 ,  G06F17/27

CPC classification number: G06N20/00 ,  G06F17/2765 ,  G16H10/60

Abstract: Systems and methods for document analysis include identifying candidates in a corpus matching a requested expression. String kernel features are extracted for each candidate. Each candidate is classified according to the string kernel features using a machine learning model. A report is generated that identifies instances of the requested expression in the corpus that match a requested class.

公开(公告)号：US20170293543A1

公开(公告)日：2017-10-12

申请号：US15478753

申请日：2017-04-04

Applicant: NEC Laboratories America, Inc.

Inventor： Jianwu Xu ,  Ke Zhang ,  Hui Zhang ,  Renqiang Min ,  Guofei Jiang

IPC: G06F11/22 ,  G06N99/00 ,  G06N5/04 ,  G06N3/04

CPC classification number: G06F11/2263 ,  G06N3/0445 ,  G06N5/04 ,  G06N99/005

Abstract: 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. A likelihood of failure of one or more mobile phone components is determined based on the received log files by clustering the plurality of log files according to structural log patterns and determining feature representations of the log files based on the log clusters. A user is alerted to a potential failure if the likelihood of component failure exceeds a first threshold. An automatic system control action is performed if the likelihood of component failure exceeds a second threshold.

公开(公告)号：US09784567B2

公开(公告)日：2017-10-10

申请号：US14842542

申请日：2015-09-01

Applicant: NEC Laboratories America, Inc.

Inventor： Ting Wang ,  Yi Weng

IPC: G01K11/32 ,  G01B11/16

CPC classification number: G01B11/168 ,  G01K11/32 ,  G01K2011/322

Abstract: Methods and systems for sensing conditions of a fiber include splitting a light signal into two branches. A first branch is converted to have a mode different from that of the second branch. Both branches are mode multiplexed into a single fiber. An output of the fiber is mode demultiplexed into the two branches. The first branch is mode converted to its original mode. Brillouin scattering patterns of the two branches are compared to determine a temperature and strain profile of the fiber.

公开(公告)号：US20170278544A1

公开(公告)日：2017-09-28

申请号：US15374758

申请日：2016-12-09

Applicant: NEC Laboratories America, Inc.

Inventor： Wongun Choi

IPC: G11B27/031 ,  G06T11/60 ,  G06F3/0484 ,  G06K9/00 ,  G06T11/20 ,  G11B27/28 ,  G11B27/34

CPC classification number: G11B27/031 ,  G06F3/04842 ,  G06K9/00577 ,  G06K9/00671 ,  G06K9/00744 ,  G06T11/203 ,  G06T11/60 ,  G06T2207/10016 ,  G11B27/28 ,  G11B27/34

Abstract: 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. The method further includes generating, by the computer based on the information, estimated box annotations of the given target object in suggested frames from among the plurality of frames. The suggested frames are determined based on an annotation uncertainty measure calculated using a set of already provided annotations for at least some of the plurality of frames together with optical flow information for the video sequence. The method also includes displaying, by the computer, various ones of the estimated box annotations of the given target object in the suggested frames.

公开(公告)号：US20170272344A1

公开(公告)日：2017-09-21

申请号：US15413812

申请日：2017-01-24

Applicant: NEC Laboratories America, Inc.

Inventor： LuAn Tang ,  Zhengzhang Chen ,  Haifeng Chen ,  Kenji Yoshihira ,  Guofei Jiang

IPC: H04L12/26

CPC classification number: H04L43/10 ,  G06F11/3438 ,  H04L41/12 ,  H04L41/16 ,  H04L41/22 ,  H04L41/28 ,  H04L43/06 ,  H04L43/0811 ,  H04L67/22

Abstract: 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.

公开(公告)号：US20170249515A1

公开(公告)日：2017-08-31

申请号：US15420518

申请日：2017-01-31

Applicant: NEC Laboratories America, Inc.

Inventor： Bing Bai

IPC: G06K9/00 ,  H04N7/18 ,  G06K9/18 ,  G06N3/04 ,  G06N3/08

Abstract: 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. The video camera further includes a processor. The processor is configured to generate a plurality of embedding vectors based on a plurality of observations. 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. The subject and object are constant. The processor is further configured to generate predictions of one or more future events based on one or more comparisons of at least some of the plurality of embedding vectors. The processor is configured to generate a signal for initiating an action to the at least one of the plurality of machines to mitigate harm.

公开(公告)号：US20170244733A1

公开(公告)日：2017-08-24

申请号：US15416462

申请日：2017-01-26

Applicant: NEC Laboratories America, Inc.

Inventor： Zhenyu Wu ,  Zhichun Li ,  Jungwhan Rhee ,  Fengyuan Xu ,  Guofei Jiang ,  Kangkook Jee ,  Xusheng Xiao ,  Zhang Xu

IPC: H04L29/06

CPC classification number: H04L63/1425 ,  G06F21/55 ,  G06F21/552 ,  H04L63/1416

Abstract: 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. It is determined whether an intrusion has occurred based on the causality trace. One or more mitigation actions is performed if it is determined that an intrusion has occurred.

公开(公告)号：US09742526B2

公开(公告)日：2017-08-22

申请号：US14504428

申请日：2014-10-02

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan Djordjevic ,  Ting Wang

IPC: H04B10/11 ,  H04L1/00 ,  H04B10/516 ,  H04B10/61 ,  H03M13/00 ,  H04L27/34

CPC classification number: H04L1/0041 ,  H03M13/00 ,  H03M13/255 ,  H04B10/516 ,  H04B10/6163 ,  H04L1/005 ,  H04L1/0058 ,  H04L25/067 ,  H04L27/3405

Abstract: A method to process applicable to coherent optical channels with either linear or nonlinear phase noise includes: splitting a received sequence of data into clusters of points according to a cumulative log-likelihood function from constellation obtained in a previous iteration; generating new constellation points by calculating a center of mass of the clusters of points; repeating until convergence or until a predetermined number of iterations has been reached to determine a signal constellation; and transmitting signals over the coherent optical channels with nonlinear phase noise using the disclosed signal constellation and LDPC-coded modulation concepts.

公开(公告)号：US09736053B2

公开(公告)日：2017-08-15

申请号：US14665069

申请日：2015-03-23

Applicant: NEC Laboratories America, Inc.

Inventor： Hui Zhang ,  Cristian Lumezanu ,  Junghwan Rhee ,  Nipun Arora ,  Qiang Xu ,  Guofei Jiang

IPC: H04L12/751 ,  H04L12/715 ,  H04L12/721

CPC classification number: H04L45/02 ,  H04L43/12 ,  H04L45/64 ,  H04L45/70

Abstract: A computer implemented method for network monitoring includes providing network packet event characterization and analysis for network monitoring that includes supporting summarization and characterization of network packet traces collected across multiple processing elements of different types in a virtual network, including a trace slicing to organize individual packet events into path-based trace slices, a trace characterization to extract at least 2 types of feature matrix describing those trace slices, and a trace analysis to cluster, rank and query packet traces based on metrics of the feature matrix.

公开(公告)号：US09736041B2

公开(公告)日：2017-08-15

申请号：US14456094

申请日：2014-08-11

Applicant: NEC Laboratories America, Inc.

Inventor： Cristian Lumezanu ,  Kyriakos Zanfis ,  Guofei Jiang

IPC: G06F15/173 ,  H04L12/26 ,  H04L12/24

CPC classification number: H04L43/04 ,  H04L41/046 ,  H04L41/147 ,  H04L43/026

Abstract: Systems and methods for network management, including adaptively installing one or more monitoring rules in one or more network devices on a network using an intelligent network middleware, detecting application traffic on the network transparently using an application demand monitor, and predicting future network demands of the network by analyzing historical and current demands. The one or more monitoring rules are updated once counters are collected; and network paths are determined and optimized to meet network demands and maximize utilization and application performance with minimal congestion on the network.