Title:
適合性のある情報を検索する方法
Document Type and Number:
Japanese Patent JP4664423
Kind Code:
B2
Abstract:
A language model is used in a speech recognition system which has access to a first, smaller data store and a second, larger data store. The language model is adapted by formulating an information retrieval query based on information contained in the first data store and querying the second data store. Information retrieved from the second data store is used in adapting the language model. Also, language models are used in retrieving information from the second data store. Language models are built based on information in the first data store, and based on information in the second data store. The perplexity of a document in the second data store is determined, given the first language model, and given the second language model. Relevancy of the document is determined based upon the first and second perplexities. Documents are retrieved which have a relevancy measure that exceeds a threshold level.
Inventors:
Mahajan Milind Vi.
Fan Shu Don Dee.
Fan Shu Don Dee.
Application Number:
JP2009133928A
Publication Date:
April 06, 2011
Filing Date:
June 03, 2009
Export Citation:
Assignee:
MICROSOFT CORPORATION
International Classes:
G10L15/06; G06F17/30; G10L15/183; G10L15/197; G10L15/22
Domestic Patent References:
| JP713598A | ||||
| JP4291399A |
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe