US 11,941,495 B2
Information processing device, information processing method, and recording medium
Shizuka Sato, Tokyo (JP); and Takazumi Kawai, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 16/633,893
Filed by NEC CORPORATION, Tokyo (JP)
PCT Filed Aug. 2, 2017, PCT No. PCT/JP2017/027965
§ 371(c)(1), (2) Date Jan. 24, 2020,
PCT Pub. No. WO2019/026193, PCT Pub. Date Feb. 7, 2019.
Prior Publication US 2021/0089962 A1, Mar. 25, 2021
Int. Cl. G06N 20/00 (2019.01); G06F 16/28 (2019.01); G06F 18/25 (2023.01)
CPC G06N 20/00 (2019.01) [G06F 16/285 (2019.01); G06F 18/256 (2023.01)] 7 Claims
OG exemplary drawing
 
1. An information processing device comprising:
a memory; and
at least one processor coupled to the memory,
the processor performing operations, the operations comprising:
receiving a plurality of pieces of time-series data being time-domain data from a plurality of sensors measuring an object, at least one sensor having a different period from a period of another sensor;
converting each of the pieces of time-series data into a piece of frequency-domain data being data of power in frequencies;
extracting a feature of a period or a frequency having maximum power in each of the pieces of frequency-domain data;
classifying each of the pieces of time-series data into one of groups, the groups respectively related to the feature for each period or frequency having maximum power;
generating a plurality of models, each of the models that represents a relationship among a plurality of the pieces of time-series data classified into each of the groups classified the pieces of time-series data; and
selecting the model in which strength of the relationship satisfies a predetermined condition.