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公开(公告)号：US12271483B2
公开(公告)日：2025-04-08
申请号：US17767127
申请日：2019-10-25
Applicant: NEC Corporation
Inventor： Kazuhiko Isoyama , Yoshiaki Sakae , Jun Nishioka , Yuji Kobayashi
Abstract: In order to provide an evaluation apparatus that appropriately evaluates a risk from continuous execution of an application without stopping execution of the application, an evaluation apparatus includes a first obtaining section, an evaluating section, and an output section. The first obtaining section is configured to obtain application information related to an application being executed on a server. The evaluating section is configured to evaluate a risk degree from continuous execution of the application on the server, based on the application information. The output section is configured to output an evaluation result of the risk degree.
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公开(公告)号：US20240039629A1
公开(公告)日：2024-02-01
申请号：US18225934
申请日：2023-07-25
Applicant: NEC Corporation
Inventor： Jun Kodama , Yoshiaki Sakae , Yuji Kobayashi , Etsuko Ichihara , Jun Nishioka , Hiroki Tagato , Takashi Konashi
IPC: H04B10/079 , G06N20/00
CPC classification number: H04B10/07953 , G06N20/00
Abstract: A learning model is trained so that a signal state can be estimated with high accuracy even in a case where a constellation on a complex plane is rotated. A learning apparatus (1) includes: an acquisition section (11) that acquires a constellation of a known state optical signal transmitted through optical fiber; a generation section (12) that generates a corrected constellation obtained by rotating the constellation on a complex plane; and a learning section (13) that uses the constellation and the corrected constellation to train a learning model.
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公开(公告)号：US20230259799A1
公开(公告)日：2023-08-17
申请号：US18012472
申请日：2020-06-29
Applicant: NEC Corporation
Inventor： Yoshiaki Sakae , Kazuhiko Isoyama , Jun Nishioka , Yuji Kobayashi
CPC classification number: G06N5/046 , G07C5/0808 , G07C5/0825 , G07C5/008
Abstract: An information processing device 1X mainly includes a selection means 32X and an inference means 35X. The selection means 32X is configured to select, based on one or more geographical center points according to a movement history of an inference target device, one or more adaptive inference models to be used from inference models generated on an area-by-area basis, the inference models making inferences of a state of the inference target device. The inference means 35X is configured to make an inference of the state of the inference target device based on inference results of the adaptive inference models which use data acquired by the inference target device.
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公开(公告)号：US20230024381A1
公开(公告)日：2023-01-26
申请号：US17790904
申请日：2020-01-22
Applicant: NEC Corporation
Inventor： YOSHIAKI SAKAE , Hiroki Tagato , Kazuhiko Isoyama , Jun Nishioka , Yuji Kobayashi
Abstract: A utility pole degradation detection system according to the present disclosure includes: a sensing optical fiber (10) laid on a plurality of utility poles (30); a receiving unit (201) that receives vibration information detected by the sensing optical fiber (10); an identifying unit (202) that identifies a natural frequency of each of the plurality of utility poles (30) on the basis of the vibration information; and an analyzing unit (203) that analyzes a degradation state of at least one utility pole (30) among the plurality of utility poles (30) on the basis of a natural frequency of each of the plurality of utility poles (30).
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公开(公告)号：US20220084335A1
公开(公告)日：2022-03-17
申请号：US17464056
申请日：2021-09-01
Applicant: NEC Laboratories America, Inc. , NEC Corporation
Inventor： LuAn Tang , Wei Cheng , Haifeng Chen , Yuji Kobayashi , Zhengzhang Chen
Abstract: A method for early warning is provided. The method clusters normal historical data of normal cars into groups based on the car subsystem to which they belong. The method extracts (i) features based on group membership and (ii) feature correlations based on correlation graphs formed from the groups. The method trains an Auto-Encoder and Auto Decoder (AE&AD) model based on the features and the feature correlations to reconstruct the normal historical data with minimum reconstruction errors. The method reconstructs, using the trained AE&AD model, historical data of specific car fault types with reconstruction errors, normalizes the reconstruction errors, and selects features of the car faults with a top k large errors as fault signatures. The method reconstructs streaming data of monitored cars using the trained AE&AD model to determine streaming reconstruction errors, comparing the streaming reconstruction errors with the fault signatures to predict and provide alerts for impending known faults.
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Patent Agency Ranking
公开(公告)号：US11250029B2
公开(公告)日：2022-02-15
申请号：US15521214
申请日：2015-10-28
Applicant: NEC Corporation
Inventor： Takashi Nomura , Koji Kida , Kazuhiko Isoyama , Junpei Kamimura , Yoshiaki Sakae , Yuji Kobayashi , Etsuko Ichihara
IPC: G06F16/28
Abstract: The present invention provides an information processing system for more appropriately classifying elements that constitute an information processing device or the like. This information processing system is provided with: a means that, on the basis of information indicating the relationship between a plurality of elements that constitute a system, acquires, for first elements to be classified, a set of second elements capable of arriving at the first elements via a relationship of arbitrary numbers; and a means that, on the basis of the set corresponding to the first elements, classifies each of the first elements in any of a plurality of roles.
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公开(公告)号：US10860406B2
公开(公告)日：2020-12-08
申请号：US15122602
申请日：2015-03-18
Applicant: NEC Corporation
Inventor： Takashi Nomura , Koji Kida , Junpei Kamimura , Yoshiaki Sakae , Etsuko Katsuda , Kazuhiko Isoyama , Kentaro Yamasaki , Yuji Kobayashi
Abstract: The present invention provides an information processing device that outputs information including the data transmission relationship between elements constituting an information processing system, the information indicating the state of the information processing system. The information processing device includes a graphing means for generating a relationship graph based on an event log indicating the behavior of each of a plurality of processes operating in the system, the relationship graph having the processes as the vertices thereof and having the data transmission relationship between the vertices as the sides thereof; and a graph output means for outputting the generated relationship graph.
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公开(公告)号：US12254097B2
公开(公告)日：2025-03-18
申请号：US17767138
申请日：2019-10-25
Applicant: NEC Corporation
Inventor： Jun Nishioka , Yoshiaki Sakae , Kazuhiko Isoyama , Yuji Kobayashi
Abstract: In order to provide an evaluation apparatus that appropriately evaluates risk of a source code changing over time, an evaluation apparatus includes a generating unit and an output unit. The generating unit generates an evaluation related to risk of a first library described in a source code. The output unit calculates the degree of risk of the fist library, based on at least the generated evaluation, calculates a risk value indicating risk inherent in the source code, based on the calculated degree of risk, and also outputs time-series data of the calculated risk value.
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公开(公告)号：US20240185026A1
公开(公告)日：2024-06-06
申请号：US18493391
申请日：2023-10-24
Applicant: NEC Laboratories America, Inc. , NEC Corporation
Inventor： LuAn Tang , Yuncong Chen , Wei Cheng , Haifeng Chen , Zhengzhang Chen , Yuji Kobayashi
IPC: G06N3/0442 , G06N3/08
CPC classification number: G06N3/0442 , G06N3/08
Abstract: Methods and systems for defect detection include determining a first residual score by comparing a first predicted system state, determined according to previously measured environment data, to an actual system state. A second residual score is determined by comparing a second predicted system state, determined according to previously measured system state data, to the actual system state. A defect score is generated based on a difference between the first residual score and the second residual score. An automatic action is performed responsive to a determination that the defect score indicates a defect in system behavior.
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10.发明授权公开(公告)号：US11914493B2
公开(公告)日：2024-02-27
申请号：US17145949
申请日：2021-01-11
Applicant: NEC CORPORATION
Inventor： Shuichi Karino , Kazuhiko Isoyama , Yuji Kobayashi , Yoshiaki Sakae , Hiroki Tagato , Masato Yasuda
CPC classification number: G06F11/3006 , G06F11/079 , G06F11/0751 , G06F11/3055 , G06F11/3409 , G06F2201/86
Abstract: Provided is an information processing device which is capable of suppressing a deterioration in accuracy of detecting an anomaly and accuracy of analyzing the anomaly, while suppressing an increase in an amount of data to be stored. The information processing system includes anomaly detection unit that collects event data indicating a predetermined event detected in a process of a device to be monitored, determines whether a predetermined index value related to the event exceeds a preset first threshold, and instructs enhanced monitoring of the device to be monitored and the process related to the event when the index value exceeds the first threshold, and collection instruction unit that determines an additional event being an event to be additionally monitored when the enhanced monitoring is instructed, and instructs the device to be monitored, which is subjected to the enhanced monitoring, to monitor the determined additional event.
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