16. A speech recognition system for recognizing speech without prior training as in claim 15 , wherein said one or more provider computers are cloud computers and said dynamic context model is a group context model weighting probabilities according to the frequency words have occurred during speech recognition for group users within said current user context.
15. A speech recognition system as in claim 14 , wherein context is described by a cross-relation between a plurality of situational variables, and said dynamic context model applies weights from normalizing the frequency each candidate has occurred to the frequency of the most frequently occurring candidate within the same said context.