Retrieval apparatus
US6175828A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1998 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Jan 5, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99944
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A retrieval apparatus is capable of simultaneously executing keyword retrieval and semantic retrieval of information. The retrieval apparatus includes an input for inputting a request-text for retrieval, a word dictionary for storing words together with corresponding word vectors in n-vector space, a database containing a plurality of data including at least a word, word extracting structure for extracting a word in the request-text by using the word dictionary, vector generating structure for generating a request-text vector from the request-text by using the word dictionary and the word extracting structure, vector retrieving structure for determining semantic similarity of each data vector to the request-text vector, keyword retrieving structure for searching data containing a word corresponding to that in the request-text by using the word extracting structure and extended retrieving structure for retrieving data adapted to the request-text on the basis of the semantic similarity of the data vector to the request-text vector and the number of the words commonly included in the data and the request-text.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.