3. An automated directory assistance system as defined in claim 2, wherein said selecting unit is operative for processing data indicative of at least a portion of a telephone number of a terminal from which the user is inputting the spoken utterance to select one of said a priori data structures.
2. An automated directory assistance system as defined in claim 1, wherein said weighing unit for weighing the candidates establishes for each candidate a compound probability value that is indicative of a likelihood of match of the candidate with the spoken utterance, the compound probability depending in part on a degree of acoustic match between the candidate and the spoken utterance and depending in part on a probability data elements in said one of said a priori data structures.