Privacy preserving document analysis
US12267305B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2023 |
| Grant date | Apr 1, 2025 |
| Priority date | — |
| Expiry date | May 20, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N20/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and techniques for privacy preserving document analysis are described that derive insights pertaining to a digital document without communication of the content of the digital document. To do so, the privacy preserving document analysis techniques described herein capture visual or contextual features of the digital document and creates a stamp representation that represents these features without included the content of the digital document. The stamp representation is projected into a stamp embedding space based on a stamp encoding model generated through machine learning techniques capturing feature patterns and interaction in the stamp representations. The stamp encoding model exploits these feature interactions to define similarity of source documents based on location within the stamp embedding space. Accordingly, the techniques described herein can determine a similarity of documents without having access to the documents themselves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.