1. A method comprising: recognizing phonemes from a user input using a current phonotactic model stored in a database, to yield recognized phonemes; detecting morphemes from the recognized phonemes; creating, via a processor, a new phonotactic model by transforming, using the morphemes, a prior probability distribution associated with a first domain to a prior probability distribution associated with a second domain; and replacing the current phonotactic model with the new phonotactic model in the database.