1. A speaker adaptation system comprising: a storage unit which stores at least reference speech models of symbols; and a network generator in communication with said storage unit which generates a network of models for a speaker adaptation session corresponding to a series of symbols presentable to a user during said session, said network of models comprising: multiple models for at least one multi-word symbol and models from more than one language; and a model adapter which adapts at least a portion of said reference speech models from at least a portion of speech from said user.