Feature value generation device, feature value generation method, and feature value generation program
US11514062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2018 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Nov 27, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N20/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A table acquiring means 381 acquires a first table including prediction objects and first attributes, and a second table including second attributes. A receiving means 382 receives a similarity function and condition for similarity used to calculate the similarity between the first attribute and the second attribute. A feature generating means 383 generates feature candidates able to affect a prediction object using a combination condition for combining a record in the first table including the value of a first attribute satisfying the condition with a record in the second table including the value of a second attribute satisfying the similarity calculated with the value of the first attribute and the value of the second attribute using the similarity function, and using a reduction method for a plurality of records in the second table and a reduction condition represented by the column to be aggregated. A feature selecting means 384 selects an optimum feature for the prediction from the feature candidates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.