21. The method of claim 1 , wherein the region of the document comprises a hypothesis generated by an automatic transcription system for the corresponding region of the spoken audio stream, and wherein (B) comprises: (B)(1) identifying a competing hypothesis generated by the automatic transcription system for the corresponding region of the spoken audio stream; (B)(2) selecting a prior relevance of the competing hypothesis; and (B)(3) selecting the measure of relevance based on the prior relevance of the competing hypothesis.
22. The method of claim 21 , wherein (B)(3) comprises selecting the measure of relevance based on the prior relevance of the competing hypothesis and a prior relevance of the region of the document.