Document comparison system
US11429678B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2020 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Apr 29, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/416
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The disclosure provides a system that can easily calculate a similarity rate of a target document when comparing the target document. An array set of a designated type of words (e.g., nouns) is respectively extracted from a test document and a reference document as an arrayed test document and an arrayed reference document. A word included in a common word set of the arrayed test document and the arrayed reference document is defined as true as a proposition, and other words are defined as false as propositions. Further, when a ratio of words defined as true as propositions in a word array of a first designated length including a word among words defined as false as propositions is greater than or equal to a first designated value, the word is redefined as a wildcard and true as a proposition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.