Classifying text into hierarchical categories
US8145636B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2009 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Nov 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/353
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems, methods and program products for classifying text. A system classifies text into first subject matter categories. The system identifies one or more second subject matter categories in a collection of second subject matter categories, each of the second categories is a hierarchical classification of a collection of confirmed valid search results for queries, in which at least one query for each identified second category includes a term in the text. The system filters the identified categories by excluding identified categories whose ancestors are not among the first categories. The system selects categories from the filtered categories based on one or more thresholds in which a threshold specifies a degree of relatedness between a selected category and the text. The selected categories are a sufficient basis for recommending content to a user, the content being associated with one or more of the selected categories.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.