30. The method of claim 26 , further comprising modifying the relevance model, wherein modifying the relevance model comprises modifying a parameter for at least one feature in the relevance model using at least one user input event.
30. The method of claim 26 , further comprising modifying the relevance model, wherein modifying the relevance model comprises modifying a parameter for at least one feature in the relevance model using at least one user input event. 31. The method of claim 30 , wherein modifying the relevance model comprises applying a machine learning technique.