公开(公告)号：US20230131330A1

公开(公告)日：2023-04-27

申请号：US18089574

申请日：2022-12-28

Applicant: Fujitsu Limited

Inventor： Takuya TAKAGI ,  Ken KOBAYASHI ,  Kentaro KANAMORI

IPC: G06F18/2137 ,  G06F18/22 ,  G06F18/2413 ,  G16H10/40

Abstract: An information processing apparatus obtains a plurality of attribute datasets including a subject attribute dataset, which are each a combination of a plurality of item values, and information indicating an area range that is taken as a target in a dimensional space. The information processing apparatus then performs a determination process of determining a change-target item value to be changed from among the plurality of item values of the subject attribute dataset and a changing direction for the change-target item value on the basis of the distribution of at least some of the plurality of attribute datasets in the dimensional space. The information processing apparatus outputs information indicating a result of changes made by alternately iterating a changing process of changing the change-target item value and the determination process that follows the changing process until the subject attribute dataset is within the area range.

公开(公告)号：US20240184843A1

公开(公告)日：2024-06-06

申请号：US18241238

申请日：2023-09-01

Applicant: Fujitsu Limited

Inventor： Yasunari HIKIMA ,  Ken KOBAYASHI

IPC: G06F17/11

CPC classification number: G06F17/11

Abstract: A non-transitory computer-readable recording medium storing an output program for causing a computer to execute a process, the process includes acquiring first graph data related to solutions over a Pareto front and second graph data related to a plurality of evaluation values corresponding to the solutions, fitting a Bezier simplex to each of the acquired first graph data and the acquired second graph data, generating a plurality of data points that corresponds to each other over a Bezier simplex fitted to each of the first graph data and the second graph data, receiving input of a condition that indicates a range of each of the plurality of evaluation values, and outputting solutions indicated by data points over a Bezier simplex fitted to the first graph data, the data points corresponding to data points over a Bezier simplex fitted to the second graph data selected based on the received condition.

公开(公告)号：US20210390623A1

公开(公告)日：2021-12-16

申请号：US17330411

申请日：2021-05-26

Applicant: FUJITSU LIMITED

Inventor： Masaru TODORIKI ,  Yuhei UMEDA ,  Ken KOBAYASHI ,  Koji MARUHASHI

IPC: G06Q40/06 ,  G06K9/00 ,  G06F16/22

Abstract: A non-transitory computer-readable recording medium has stored therein a program that causes a computer to execute a process, the process including determining numerical values indicating features at respective timings having a predetermined time interval with respect to time-series data to be analyzed, numbers of the numerical values at the respective timings being made same, and generating an attractor related to the time-series data based on the determined numerical values.

公开(公告)号：US20190236407A1

公开(公告)日：2019-08-01

申请号：US16262974

申请日：2019-01-31

Applicant: FUJITSU LIMITED

Inventor： Masaru TODORIKI ,  Yuhei UMEDA ,  Ken KOBAYASHI

IPC: G06K9/62 ,  G06K9/00

CPC classification number: G06K9/6232 ,  G06K9/00523 ,  G06K9/00536

Abstract: A detection device adds, with regard to each of a plurality of sets of time-series data including a plurality of items, a time-shift term to at least any of the plurality of items included in each of the plurality of sets of time-series data. The detection device generates a plurality of attractors from the plurality of sets of time-series data to which the time-shift term has been added. The detection device generates a plurality of Betti sequences from each of the plurality of attractors by executing a persistent homology transformation on each of the plurality of attractors, each of the plurality of Betti sequences indicating a correspondence relationship between a Betti number and a scale value has been used for the persistent homology transformation. The detection device detects a state change in the plurality of sets of time-series data based on a time change in the plurality of Betti sequences.

公开(公告)号：US20190012297A1

公开(公告)日：2019-01-10

申请号：US16028915

申请日：2018-07-06

Applicant: FUJITSU LIMITED

Inventor： Ken KOBAYASHI ,  Yuhei UMEDA ,  Masaru TODORIKI ,  Hiroya INAKOSHI

IPC: G06F17/18 ,  G06F17/16

Abstract: A non-transitory computer-readable recording medium stores therein an analysis program that causes a computer to execute a process including: dividing a Betti number sequence into a plurality of Betti number sequences, the Betti number sequence being included in a result of a persistent homology process performed on time series data, the plurality of Betti number sequences corresponding to different dimension of the Betti number sequence; and performing an analysis on each of the plurality of Betti number sequences.

公开(公告)号：US20240061901A1

公开(公告)日：2024-02-22

申请号：US18343359

申请日：2023-06-28

Applicant: Fujitsu Limited

Inventor： Ken KOBAYASHI ,  Yasunari HIKIMA ,  Yuhei UMEDA

IPC: G06F17/11

CPC classification number: G06F17/11

Abstract: A non-transitory computer-readable recording medium stores an output program for causing a computer to execute a process including: acquiring a plurality of solutions over a Pareto front; fitting a Bezier simplex to the plurality of solutions that has been acquired; calculating a gradient of the Bezier simplex at a plurality of data points over the Bezier simplex that has been fit; and for each of the plurality of data points that has been generated, outputting evaluation information on robustness of a solution corresponding to the data point based on the gradient that has been calculated.

公开(公告)号：US20190180194A1

公开(公告)日：2019-06-13

申请号：US16207350

申请日：2018-12-03

Applicant: FUJITSU LIMITED

Inventor： Ken KOBAYASHI ,  Yuhei Umeda ,  Masaru Todoriki

IPC: G06N20/00

Abstract: An extraction apparatus generates a plurality of Betti series based on Betti numbers obtained by performing a persistent homology transform on a plurality of pseudo-attractors generated from a plurality of pieces of time-series data. The extraction apparatus generates a plurality of transformed Betti series in which a region with a larger radius at the time of generating the Betti numbers is weighted more than a region with a smaller radius from the plurality of Betti series. The extraction apparatus extracts abnormality candidates from the plurality of pieces of time-series data based on the Betti number in the plurality of transformed Betti series.

公开(公告)号：US20190012413A1

公开(公告)日：2019-01-10

申请号：US16027961

申请日：2018-07-05

Applicant: FUJITSU LIMITED

Inventor： Masaru TODORIKI ,  Yuhei UMEDA ,  Ken KOBAYASHI

IPC: G06F17/50

Abstract: A non-transitory computer-readable recording medium stores therein a state classifying program that causes a computer to execute a process including: generating an attractor containing a plurality of points that correspond to a plurality of sets of time series data, coordinate values of each of the plurality of points being values corresponding to the sets of time series data; generating Betti number sequence data by applying a persistent homology process on the attractor; and classifying a state that is represented by the plurality of sets of time series data based on the Betti number sequence data.