Updating a language model based on a function-word to total-word ratio

摘要

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.