5. The method of claim 1 , further comprising selecting the plurality of prediction models from a set of prediction models based on a domain from which a current query was received.
5. The method of claim 1 , further comprising selecting the plurality of prediction models from a set of prediction models based on a domain from which a current query was received. 20. The method of claim 5 , wherein selecting the plurality of prediction models from a set of prediction models based on a domain from which a current query was received comprises: selecting a first set of prediction models in response to the current query being received from a first domain category; and selecting a second set of prediction models in response to the current query being received from a second domain category different from the first domain category, wherein the first set of prediction models is different from the second set of prediction models.