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Title: US6275803: Updating a language model based on a function-word to total-word ratio
[ Derwent Title ]

Country: US United States of America

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8 pages

Inventor: Lewis, James R.; Delray Beach, FL

Assignee: International Business Machines Corp., Armonk, NY
other patents from INTERNATIONAL BUSINESS MACHINES CORPORATION (280070) (approx. 44,393)
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Published / Filed: 2001-08-14 / 1999-02-12

Application Number: US1999000249940

IPC Code: Advanced: G10L 15/18;
Core: G10L 15/00;
IPC-7: G10L 15/18;

ECLA Code: G10L15/18;

U.S. Class: Current: 704/257; 704/244; 704/E15.018;
Original: 704/257; 704/244;

Field of Search: 704/255-257,270,251,260,244,235

Priority Number:
1999-02-12  US1999000249940

Abstract:     Sample text is evaluated to determine if it is suitable for updating a language file in a computer speech recognition system. The evaluation is performed by retrieving from a memory a sample text file containing text and a function word file containing a list of function words. The sample text file is processed to determine a total number of words it contains and a total number of function words it contains. A ratio is calculated for the total number of function words relative to the total number of words. Based upon the value of the ratio thus calculated a decision can then be made as to whether to update a language model.

Attorney, Agent or Firm: Akerman Senterfitt ;

Primary / Asst. Examiners: Knepper, David D.;

INPADOC Legal Status: Show legal status actions

Family: None

First Claim:
Show all 11 claims
What is claimed is:     1. In a computer system for speech recognition, a method for evaluating sample text comprising the steps of:
  • retrieving from a memory a sample text file containing text;
  • retrieving from said memory a function word file containing a list of function words;
  • processing said sample text file to determine a total number of words and a total number of function words contained therein;
  • calculating a ratio of said total number of function words to said total number of words; and
  • updating a language model.

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Forward References: Show 4 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (4)   |   Backward references (3)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 84pp US5428707  1995-06 Gould et al.  Dragon Systems, Inc. Apparatus and methods for training speech recognition systems and their users and otherwise improving speech recognition performance
Get PDF - 20pp US5625748  1997-04 McDonough et al.  BBN Corporation Topic discriminator using posterior probability or confidence scores
Get PDF - 20pp US6009392  1999-12 Kanevsky et al.  International Business Machines Corporation Training speech recognition by matching audio segment frequency of occurrence with frequency of words and letter combinations in a corpus
Foreign References: None

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