Patent ID: 6871177
Filing Date: 2005-03-22
Classification: G10L

Abstract:
1. A method of recognising a pattern comprising a sequence of sub-patterns, the method comprising: a) generating a data sequence representative of a physical entity; b) applying the data sequence to a set comprising active models in a network of models including at least one model, wherein each model represents a sub-pattern and comprises a finite state network with a plurality of respective states, c) assessing each state of members of said set and deactivating those states that do not meet a predetermined first criterion, between the application of successive data elements; d) selecting a subset of the outputs of the members of said set according to a predetermined second criterion, and e) adding further models to said set in dependence on the members of said subset when said subset is selected, wherein each further model includes a plurality a respective states, the further models take at least one of the subset members as inputs, and each model represents a sub-pattern and in use outputs an indication of the degree of matching between an input data sub-sequence and the represented sub-pattern.