Differential LSI space-based probabilistic document classifier
US7024400B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2001 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Aug 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/355
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computerized method for automatic document classification based on a combined use of the projection and the distance of the differential document vectors to the differential latent semantics index (DLSI) spaces. The method includes the setting up of a DLSI space-based classifier to be stored in computer storage and the use of such classifier by a computer to evaluate the possibility of a document belonging to a given cluster using a posteriori probability function and to classify the document in the cluster. The classifier is effective in operating on very large numbers of documents such as with document retrieval systems over a distributed computer network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.