9. A computing device that generates opinion data, the computing device comprising: a training data store containing training data that includes sentences and associated indications of opinions expressed by each sentence; an identify sequences component that identifies from the training data sequences of parts of speech that may express an opinion; a first calculate probability component that calculates from the training data a probability that each sequence contains a word that may express an opinion; a second calculate probability component that calculates from the training data a probability that each word expresses an opinion; and an opinion data store that specifies sequences of parts of speech that may express an opinion, a probability that each sequence contains a word that may express an opinion, and a probability that each word expresses an opinion.
9. A computing device that generates opinion data, the computing device comprising: a training data store containing training data that includes sentences and associated indications of opinions expressed by each sentence; an identify sequences component that identifies from the training data sequences of parts of speech that may express an opinion; a first calculate probability component that calculates from the training data a probability that each sequence contains a word that may express an opinion; a second calculate probability component that calculates from the training data a probability that each word expresses an opinion; and an opinion data store that specifies sequences of parts of speech that may express an opinion, a probability that each sequence contains a word that may express an opinion, and a probability that each word expresses an opinion. 14. The computing device of claim 9 wherein the sentences of the training data are collected from reviews.