14. A query processing system comprising: one or more modules; and one or more processing devices configured to execute the one or more modules, the one or more modules comprising: an interface module configured to receive a query q from a particular user u, the particular user u attempting to find an item d that satisfies the query q and has a desired characteristic V u , and the particular user u being characterized by user information θ u ; a feature determination module configured to generate features which characterize a context in which the particular user u is attempting to find the item d; a particular user predictor module configured to generate a user-specific query-dependent distribution Pr(V u |q,θ u ) associated with the query q for the particular user u; and a ranking module configured to generate personalized results for the particular user u based on at least the features and the user-specific query-dependent distribution Pr(V u |q,θ u ), wherein the interface module is configured to forward the personalized results to the particular user u.
14. A query processing system comprising: one or more modules; and one or more processing devices configured to execute the one or more modules, the one or more modules comprising: an interface module configured to receive a query q from a particular user u, the particular user u attempting to find an item d that satisfies the query q and has a desired characteristic V u , and the particular user u being characterized by user information θ u ; a feature determination module configured to generate features which characterize a context in which the particular user u is attempting to find the item d; a particular user predictor module configured to generate a user-specific query-dependent distribution Pr(V u |q,θ u ) associated with the query q for the particular user u; and a ranking module configured to generate personalized results for the particular user u based on at least the features and the user-specific query-dependent distribution Pr(V u |q,θ u ), wherein the interface module is configured to forward the personalized results to the particular user u. 15. The query processing system of claim 14 , wherein the desired characteristic V u corresponds to a topic T u that the particular user u is presumed to be intent on finding with respect to the query q.