Patent ID: 8515746
Filing Date: 2013-08-20
Classification: G06F,G10L

Abstract:
1. A computer-implemented method comprising: Selecting, by one or more computers, a target out of vocabulary rate that indicates a rate at which a word included in a search query is not included in a vocabulary; selecting, by one or more computers, a target percentage of user sessions, wherein the target percentage represents a percentage of user sessions that include search queries that include words that are included in a vocabulary of words at a rate that satisfies the target out of vocabulary rate; obtaining, by one or more computers, a training set of user sessions, each user session in the training set comprising one or more search queries that each include one or more words; and determining, by one or more computers, and based on the training set, a minimum training data collection duration for a vocabulary of words, the minimum training data collection duration corresponding to at least the target percentage of the user sessions in the training set experiencing the target out of vocabulary rate.