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公开(公告)号：US20180174065A1
公开(公告)日：2018-06-21
申请号：US15678751
申请日：2017-08-16
Applicant: NEC Laboratories America, Inc.
Inventor： Biplob Debnath , Hui Zhang , Jianwu Xu , Nipun Arora , Guofei Jiang , Bo Zong
Abstract: 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. The method further includes maintaining an index and metadata, generating attributes for fields, editing model capability to incorporate user domain knowledge, detecting anomalies using field attributes, and improving anomaly quality by using user feedback.
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公开(公告)号：US11782962B2
公开(公告)日：2023-10-10
申请号：US16936541
申请日：2020-07-23
Applicant: NEC Laboratories America, Inc.
Inventor： Xuchao Zhang , Wei Cheng , Haifeng Chen , Bo Zong
IPC: G06F16/332 , G06F16/9032 , G06F16/9035 , G06F18/214
CPC classification number: G06F16/3329 , G06F16/9035 , G06F16/90332 , G06F18/214
Abstract: A method for employing a temporal context-aware question routing model (TCQR) in multiple granularities of temporal dynamics in community-based question answering (CQA) systems is presented. The method includes encoding answerers into temporal context-aware representations based on semantic and temporal information of questions, measuring answerers expertise in one or more of the questions as a coherence between the temporal context-aware representations of the answerers and encodings of the questions, modeling the temporal dynamics of answering behaviors of the answerers in different levels of time granularities by using multi-shift and multi-resolution extensions, and outputting answers of select answerers to a visualization device.
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公开(公告)号：US11645192B2
公开(公告)日：2023-05-09
申请号：US17191964
申请日：2021-03-04
Applicant: NEC Laboratories America, Inc.
Inventor： Bo Zong , Haifeng Chen , Xuchao Zhang
CPC classification number: G06F11/3624 , G06F40/30 , G06N3/10
Abstract: A computer-implemented method executed by at least one processor for software bug localization is presented. The method includes constructing a bug localization graph to capture relationships between bug tickets and relevant source code files from historical change-sets and an underlying source code repository, leveraging natural processing language tools to evaluate semantic similarity between a new bug ticket and a historical ticket, in response to the evaluated semantic similarity, for the new bug ticket, adding links between the new bug ticket a set of similar historical tickets, incorporating the new bug ticket in the bug localization graph, and developing a mathematical graph expression to determine a closeness relationship between the relevant source code files and the new bug ticket.
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公开(公告)号：US11610114B2
公开(公告)日：2023-03-21
申请号：US16675596
申请日：2019-11-06
Applicant: NEC Laboratories America, Inc.
Inventor： Bo Zong , Jingchao Ni , Haifeng Chen , Cheng Zheng
Abstract: A method for employing a supervised graph sparsification (SGS) network to use feedback from subsequent graph learning tasks to guide graph sparsification is presented. The method includes, in a training phase, generating sparsified subgraphs by edge sampling from input training graphs following a learned distribution, feeding the sparsified subgraphs to a prediction/classification component, collecting a predication/classification error, and updating parameters of the learned distribution based on a gradient derived from the predication/classification error. The method further includes, in a testing phase, generating sparsified subgraphs by edge sampling from input testing graphs following the learned distribution, feeding the sparsified subgraphs to the prediction/classification component, and outputting prediction/classification results to a visualization device.
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公开(公告)号：US11496493B2
公开(公告)日：2022-11-08
申请号：US16565746
申请日：2019-09-10
Applicant: NEC Laboratories America, Inc.
Inventor： LuAn Tang , Jingchao Ni , Wei Cheng , Haifeng Chen , Dongjin Song , Bo Zong , Wenchao Yu
IPC: H04L29/06 , H04L9/40 , G06F16/901 , G06K9/62
Abstract: Systems and methods for implementing dynamic graph analysis (DGA) to detect anomalous network traffic are provided. The method includes processing communications and profile data associated with multiple devices to determine dynamic graphs. The method includes generating features to model temporal behaviors of network traffic generated by the multiple devices based on the dynamic graphs. The method also includes formulating a list of prediction results for sources of the anomalous network traffic from the multiple devices based on the temporal behaviors.
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Patent Agency Ranking
公开(公告)号：US20220261551A1
公开(公告)日：2022-08-18
申请号：US17584638
申请日：2022-01-26
Applicant: NEC Laboratories America, Inc.
Inventor： Yanchi Liu , Bo Zong , Haifeng Chen , Xuchao Zhang , Denghui Zhang
IPC: G06F40/30 , G06F40/284
Abstract: A method for employing a knowledge-driven pre-training framework for learning product representation is presented. The method includes learning contextual semantics of a product domain by a language acquisition stage including a context encoder and two language acquisition tasks, obtaining multi-faceted product knowledge by a knowledge acquisition stage including a knowledge encoder, skeleton attention layers, and three heterogeneous embedding guided knowledge acquisition tasks, generating local product representations defined as knowledge copies (KC) each capturing one facet of the multi-faceted product knowledge, and generating final product representation during a fine-tuning stage by combining all the KCs through a gating network.
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公开(公告)号：US20210286706A1
公开(公告)日：2021-09-16
申请号：US17191964
申请日：2021-03-04
Applicant: NEC Laboratories America, Inc.
Inventor： Bo Zong , Haifeng Chen , Xuchao Zhang
Abstract: A computer-implemented method executed by at least one processor for software bug localization is presented. The method includes constructing a bug localization graph to capture relationships between bug tickets and relevant source code files from historical change-sets and an underlying source code repository, leveraging natural processing language tools to evaluate semantic similarity between a new bug ticket and a historical ticket, in response to the evaluated semantic similarity, for the new bug ticket, adding links between the new bug ticket a set of similar historical tickets, incorporating the new bug ticket in the bug localization graph, and developing a mathematical graph expression to determine a closeness relationship between the relevant source code files and the new bug ticket.
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公开(公告)号：US11055631B2
公开(公告)日：2021-07-06
申请号：US15874220
申请日：2018-01-18
Applicant: NEC Laboratories America, Inc.
IPC: G06N20/00 , G05B23/02 , C23C16/455 , G06N5/04 , G06F16/951 , C07F1/00 , C07F1/08 , C07F3/00 , C07F3/02 , C07F3/06 , C07F5/00 , C07F7/00 , C07F7/28 , C07F9/00 , C07F11/00 , C07F13/00 , C07F15/00 , C07F15/02 , C07F15/04 , C07F15/06 , C23C16/18 , H01L21/02
Abstract: 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. A fitness threshold search is performed on the first set of time series data to automatically generate a fitness threshold, and a time resolution search is performed on the set of second time series data to automatically generate a time resolution. A set of meta-parameters including the fitness threshold and the time resolution are sent to one or more user devices across a network to govern the training of an invariant-based anomaly detector.
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公开(公告)号：US20210089652A1
公开(公告)日：2021-03-25
申请号：US17017048
申请日：2020-09-10
Applicant: NEC Laboratories America, Inc.
Inventor： Bo Zong , Haifeng Chen , Lichen Wang
Abstract: Methods and systems for detecting abnormal application behavior include determining a vector representation of a first syscall graph that is generated by a first application, the vector representation including a representation of a distribution of subgraphs of the first syscall graph. The vector representation of the first syscall graph is compared to one or more second syscall graphs that are generated by respective second applications to determine respective similarity scores. It is determined that the first application is behaving abnormally based on the similarity scores, and a security action is performed responsive to the determination that the first application is behaving abnormally.
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公开(公告)号：US20210049213A1
公开(公告)日：2021-02-18
申请号：US16936541
申请日：2020-07-23
Applicant: NEC Laboratories America, Inc.
Inventor： Xuchao Zhang , Wei Cheng , Haifeng Chen , Bo Zong
IPC: G06F16/9032 , G06K9/62 , G06F16/9035
Abstract: A method for employing a temporal context-aware question routing model (TCQR) in multiple granularities of temporal dynamics in community-based question answering (CQA) systems is presented. The method includes encoding answerers into temporal context-aware representations based on semantic and temporal information of questions, measuring answerers expertise in one or more of the questions as a coherence between the temporal context-aware representations of the answerers and encodings of the questions, modeling the temporal dynamics of answering behaviors of the answerers in different levels of time granularities by using multi-shift and multi-resolution extensions, and outputting answers of select answerers to a visualization device.
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