公开(公告)号：US09672251B1

公开(公告)日：2017-06-06

申请号：US14499615

申请日：2014-09-29

Applicant: Google Inc.

Inventor： Steven Euijong Whang ,  Rahul Gupta ,  Alon Yitzchak Halevy ,  Mohamed Yahya

IPC: G06F17/30

CPC classification number: G06F17/30528 ,  G06F17/30616 ,  G06N5/00

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for extracting facts from a collection of documents. One of the methods includes obtaining a plurality of seed facts; generating a plurality of patterns from the seed facts, wherein each of the plurality of patterns is a dependency pattern generated from a dependency parse; applying the patterns to documents in a collection of documents to extract a plurality of candidate additional facts from the collection of documents; and selecting one or more additional facts from the plurality of candidate additional facts.