Building of a document classification tree by recursive optimization of keyword selection function
US5463773A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1993 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | May 25, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99943
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A document classifying system is formed by a document data classifying system, a document classifying function building system, a sample data storage apparatus and a keyword storage apparatus. The document data classifying system inputs document data and defines a classification to which the document data belongs. The document classifying function building system is operatively connected to the document data classifying system and automatically builds a classification decision tree in the document data classifying system. A sample data storage apparatus is operatively connected to the document classifying function building system and stores sample data formed by a set comprised of the document data and the classification to which the document data belongs. The keyword storage apparatus is operatively connected to the document classifying function building system and stores keywords extracted thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.