14. A spoken dialog system having a speech model, the spoken dialog system comprising: a processor; a first module configured to control the processor to receive speech from a user; and a second module configured to control the processor to perform speech recognition on the speech using the speech model, wherein the speech model is generated by a method comprising: retrieving for an individual a calling list associated with the individual; identifying data of a social network associated with each number in the calling history; refining the data of the social network based on at least one parameter, to yield refined data of the social network; and creating, via a processor, a language model for the individual based on the refined data of the social network.
20. The spoken dialog system of claim 14 , wherein the speech model is generated by a method further comprising implementing the language model in a spoken dialog system.