7. The method of claim 1 , wherein the probabilities are computed using a probabilistic model having multiple components.
7. The method of claim 1 , wherein the probabilities are computed using a probabilistic model having multiple components. 9. The method of claim 7 , wherein the multiple components include a web site language model that is based on multiple queries, including the first queries and the second queries, that have been submitted to the searchable web sites.