10. One or more computer-readable storage media, storing instructions that enable a processor to perform actions comprising: determining, based on accented speech data for a word, pronunciation information for the word at a plurality of levels, each level corresponding to different respective subword types and including one or more subwords of the respective subword type; determining, based at least on the accented speech data, a set of probabilities at each level of the plurality of levels, each probability of the set of probabilities for a particular level being associated with a respective subword of the one or more of the subwords of the particular level; and combining the sets of probabilities to generate a model for accented speech recognition.
15. The one or more computer-readable storage media of claim 10 , wherein combining the sets employs a weighted linear combination.