Event extraction from documents with co-reference

US12086548B2 · kind B2 · utility

Assignee

• AMAZON TECHNOLOGIES, INC. · US

Inventors

• Rishita Rajal Anubhai · Seattle, US
• Yahor Pushkin · Redmond, US
• Graham Vintcent Horwood · Centreville, US
• Yinxiao Zhang · Issaquah, US
• Ravindra Manjunatha · Seattle, US
• Jie Ma · Seattle, US
• Alessandra Brusadin · Mountain View, US
• Jonathan Steuck · New York, US
• Shuai Wang · Beijing, CN
• Sameer Karnik · Issaquah, US
• Miguel Ballesteros Martinez · New York, US
• Sunil Mallya Kasaragod · San Francisco, US
• Yaser Al-Onaizan · Whitehall Corners, US

Key dates

• Filing date: Sep 30, 2020
• Grant date: Sep 10, 2024
• Expiry date: May 24, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G06N5/02
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Methods, systems, and computer-readable media for event extraction from documents with co-reference are disclosed. An event extraction service identifies one or more trigger groups in a document comprising text. An individual one of the trigger groups comprises one or more textual references to an occurrence of an event. The one or more trigger groups are associated with one or more semantic roles for entities. The event extraction service identifies one or more entity groups in the document. An individual one of the entity groups comprises one or more textual references to a real-world object. The event extraction service assigns one or more of the entity groups to one or more of the semantic roles. The event extraction service generates an output indicating the one or more trigger groups and one or more entity groups assigned to the semantic roles.