8. A dialog system, comprising: a speech recognition unit receiving a user utterance including one or more sentences; a spoken language understanding unit receiving the user utterance, and utilizing one or more models to derive a hypothesis for each word of the one or more sentences; a labeled sentence generator labeling each grammar rule of a set of grammar rules defined for various objects within an application executed by the dialog system with semantic or syntactic characteristics by annotating each grammar rule with a specific item of information regarding each element of the respective grammar rule to produce labeled grammar rules to preclude the need to label sentences after they are generated, and generating labeled sentences from the set of labeled grammar rules; and a training component using the labeled sentences to train one or more statistical models to be used by one of the speech recognition unit and the spoken language understanding unit.
8. A dialog system, comprising: a speech recognition unit receiving a user utterance including one or more sentences; a spoken language understanding unit receiving the user utterance, and utilizing one or more models to derive a hypothesis for each word of the one or more sentences; a labeled sentence generator labeling each grammar rule of a set of grammar rules defined for various objects within an application executed by the dialog system with semantic or syntactic characteristics by annotating each grammar rule with a specific item of information regarding each element of the respective grammar rule to produce labeled grammar rules to preclude the need to label sentences after they are generated, and generating labeled sentences from the set of labeled grammar rules; and a training component using the labeled sentences to train one or more statistical models to be used by one of the speech recognition unit and the spoken language understanding unit. 11. The system of claim 8 wherein the input source comprises a user utterance input to a speech recognition stage of the dialog system.