公开(公告)号：US11775775B2

公开(公告)日：2023-10-03

申请号：US16695494

申请日：2019-11-26

Applicant: salesforce.com, inc.

Inventor： Akari Asai ,  Kazuma Hashimoto ,  Richard Socher ,  Caiming Xiong

IPC: G06F40/40 ,  G06F40/30

CPC classification number: G06F40/40 ,  G06F40/30

Abstract: Embodiments described herein provide a pipelined natural language question answering system that improves a BERT-based system. Specifically, the natural language question answering system uses a pipeline of neural networks each trained to perform a particular task. The context selection network identifies premium context from context for the question. The question type network identifies the natural language question as a yes, no, or span question and a yes or no answer to the natural language question when the question is a yes or no question. The span extraction model determines an answer span to the natural language question when the question is a span question.