Voice recognition sever and control method thereof

The speech recognition server, and a control method are disclosed. Control method for a speech recognition server according to the invention, which is set to the group for each of the plurality of training text, based on the index value of the phase, a plurality of training text to calculate the index value of the plurality of training text, and corresponds to the group and storing a matching function, when the user terminal apparatus of the user's voice utterance received. Calculating an index value from the received utterance voice and speech search for a group corresponding to the index value calculated by voice will be performing a function corresponding to the speech utterance. In this way, the speech recognition server may provide speech recognition results to the appropriate user's intent with respect to the voice utterance of the various users.