公开(公告)号：US20240370345A1

公开(公告)日：2024-11-07

申请号：US18561027

申请日：2021-05-21

Applicant: NEC Corporation

Inventor： Jun Nishioka ,  Yoshiaki Sakae ,  Takashi Konashi ,  Hiroki Tagato ,  Yuji Kobayashi ,  Etsuko Ichihara ,  Jun Kodama

IPC: G06F11/30 ,  G06F16/2458

Abstract: In an information processing device, a provision means provides multiple terminals with a common search model. A filter acquisition means acquires, from each terminal, a filter configured by a feature value obtained using the search model. A data acquisition means acquires, from each terminal, a target time series data subjected to state estimation. A estimation means estimates a state of the terminal which outputted the target time series data, based on the target time series data and the filter.

公开(公告)号：US12254018B2

公开(公告)日：2025-03-18

申请号：US18013405

申请日：2020-07-03

Applicant: NEC Corporation

Inventor： Takashi Konashi

IPC: G06F7/00 ,  G06F16/2458 ,  G06F16/248 ,  G06F16/28

Abstract: A time-series data processing system 100 according to the present invention includes a comparison unit 121 configured to compare a feature amount of each of pieces of partial time-series data in a plurality of specific periods at different positions on a time axis in first time-series data and a feature amount of each of pieces of partial time-series data in a plurality of periods located in correspondence with a positional relationship among the plurality of specific periods in second time-series data, and a detection unit 122 configured to detect a specific state in the second time-series data based on a result of the comparison.

公开(公告)号：US12072985B2

公开(公告)日：2024-08-27

申请号：US17632361

申请日：2019-08-07

Applicant: NEC Corporation

Inventor： Jun Nishioka ,  Yoshiaki Sakae ,  Kazuhiko Isoyama ,  Takashi Konashi

IPC: G06F21/57 ,  G06F21/31 ,  G06F21/78

CPC classification number: G06F21/577 ,  G06F21/31 ,  G06F21/78

Abstract: A policy evaluation apparatus (2000) acquires, with respect to each of a plurality of control groups (10) including an evaluation target group, control policies (20). Each of the control policy (20) indicates execution permission/non-permission of an application. Further, the policy evaluation apparatus (2000) compares an evaluation target policy being the control policy (20) of the evaluation target group with other plurality of control policies (20), and generates evaluation information (30) based on the comparison result.

公开(公告)号：US11526605B2

公开(公告)日：2022-12-13

申请号：US17042622

申请日：2018-04-27

Applicant: NEC Corporation

Inventor： Takashi Konashi ,  Satoru Yamano

IPC: G06F21/55 ,  H04L9/36

Abstract: An extraction device includes: at least one memory configured to store instructions; and at least one processor configured to execute the instructions to: sort each set of frames that have the same identifier associated with a node, into frames maintaining a cycle and frames out of the cycle; and extract, as an event rule, a feature of a bit change in a data field related to an event occurrence, from the frames that have the same identifier and are out of the cycle.

公开(公告)号：US11983064B2

公开(公告)日：2024-05-14

申请号：US17632317

申请日：2019-08-09

Applicant: NEC Corporation

Inventor： Takashi Konashi

IPC: G06F11/00 ,  G06F11/07

CPC classification number: G06F11/0751 ,  G06F11/0772

Abstract: An abnormality detection apparatus (2000) detects a start of a predetermined operation in a terminal (10). The abnormality detection apparatus (2000) acquires reference information (30) representing a reference of abnormality detection of the terminal (10) after the predetermined operation is started. After it is detected that the predetermined operation is started, the abnormality detection apparatus (2000) detects abnormality of the terminal (10) by using the acquired reference information (30).

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.

公开(公告)号：US11682217B2

公开(公告)日：2023-06-20

申请号：US17052957

申请日：2019-05-07

Applicant: NEC Corporation

Inventor： Takashi Konashi ,  Satoru Yamano ,  Shohei Mitani

IPC: G06V20/56 ,  G06N20/00

CPC classification number: G06V20/56 ,  G06N20/00

Abstract: A surveillance device according to the present invention includes: a memory; and at least one processor coupled to the memory. The processor performs operations. The operations includes: calculating, based on a value of a parameter that is contained in a received data frame and represents a state of an apparatus, a change in the state of the apparatus; and determining whether the change is included in an allowable range determined in accordance with the state of the apparatus before the change.