Time-series feature extraction apparatus, time-series feature extraction method and recording medium
US11710066B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2019 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Nov 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2218/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A time-series feature extraction apparatus has a coefficient outputter to output a coefficient to be used in calculation for classifying time series data into a plurality of segments, a segment position outputter to perform calculation for classifying the time series data into the plurality of segments based on the coefficient to output information on boundary positions of the plurality of segments, a cluster classifier to classify the plurality of segments into a certain number of plurality of clusters equal to or smaller than a certain number of the plurality of segments, a representative element outputter to output a representative element which represents a local feature of each of the plurality of clusters and is set for each of the plurality of segments, a feature degree calculator to calculate a feature degree of the representative element, and a representative element updater to update the representative element based on the feature degree.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.