10. The method of claim 9 , wherein determining similarity scores that each indicate a degree of similarity of the utterance vector and one of the speaker vectors in the set comprises determining a cosine distance between the utterance vector and each of the speaker vectors in the set.
9. The method of claim 1 , wherein comparing the speaker vectors in the set with the utterance vector comprises determining similarity scores that each indicate a degree of similarity of the utterance vector and one of the speaker vectors in the set; and wherein selecting a speaker vector comprises selecting the speaker vector that the similarity scores indicate is most similar to the utterance vector.