Quantization method for feature vector, search method, apparatus and storage medium
US11308152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Dec 20, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/53
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present disclosure provide a quantization method of feature vector, search method, apparatus and storage medium, wherein the quantization method comprises: setting quantization codewords; selecting, from the set quantization codewords, at least one quantization codeword of which distance from an original feature vector is smaller than first predetermined distance as a quantization codeword subset; determining quantization feature vectors corresponding to the original feature vector by using at least two quantization codewords, wherein at least one quantization codeword from the at least two quantization codewords are in the quantization codeword subset. The search method is a method of performing a search among quantization feature vectors after a quantization using the quantization method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.