2. The method of claim 1 , further comprising: applying the original query and the revised queries to the predictive model to obtain confidence measures for the revised queries based on the respective likelihood of success.
2. The method of claim 1 , further comprising: applying the original query and the revised queries to the predictive model to obtain confidence measures for the revised queries based on the respective likelihood of success. 6. The method of claim 2 , further comprising: sorting the revised queries by the confidence measures.