公开(公告)号：US20140122388A1

公开(公告)日：2014-05-01

申请号：US14064949

申请日：2013-10-28

Applicant: NEC Laboratories America, Inc.

Inventor： Bing Bai ,  Christopher Malon ,  lain Melvin

IPC: G06N99/00

CPC classification number: G06N99/005 ,  G06F17/30864

Abstract: Semantic indexing methods and systems are disclosed. One such method is directed to training a semantic indexing model by employing an expanded query. The query can be expanded by merging the query with documents that are relevant to the query for purposes of compensating for a lack of training data. In accordance with another exemplary aspect, time difference features can be incorporated into a semantic indexing model to account for changes in query distributions over time.

Abstract translation: 公开了语义索引方法和系统。 一种这样的方法旨在通过使用扩展查询来训练语义索引模型。 通过将查询与与查询相关的文档合并，可以扩展查询，以补偿缺乏培训数据。 根据另一示例性方面，可以将时差特征并入到语义索引模型中以考虑随时间的查询分布的变化。