Patent ID: 7516071
Filing Date: 2009-04-07
Classification: G10L

Abstract:
1. A pattern recognition apparatus, said apparatus comprising: an input arrangement which inputs patterned features; a base model arrangement which provides at least one base model; an environment detector which ascertains an environment from which the at least one base model originated; and a transform arrangement which produces a stacked target model based on a feature vector corresponding to the environment A from which the at least one base model originated using: A is the channel environment for training data set from which the base model originated; X is a training data set of feature vectors of a target class; X′ is a transformed stacked target model training set; R R ƒ there is independence between the at least one base model and the stacked target model allowing for a single enrollment of a target class; a second transform arrangement which produces a channel compensation stacked target model based on a feature vector corresponding to environment B using: B is the new channel environment; R R ƒ a verification arrangement which compares the second transform with the first transform to arrive at a determination of mismatch in feature relationships present in environment A, wherein focus is preferably shifted from ƒ an arrangement which produces a pattern recognition decision based on the model verification result.