8. A system comprising: a processor; and a computer-readable storage medium having instructions stored which, when executed by the processor, cause the processor to perform operations comprising: identifying features from a set of user interactions; identifying a policy for using the features in developing a dialog manager; performing, based on the policy, a linear evaluation on the features, to yield a set of features; repeating a cubic policy process on the set of features until the set of features results in a reduced set of features having a quantity below a threshold, the cubic policy process comprising a least-squares policy iteration algorithm; and generating the dialog manager using a modified set of user interactions, the modified set of user interactions being selected based on the reduced set of features.
8. A system comprising: a processor; and a computer-readable storage medium having instructions stored which, when executed by the processor, cause the processor to perform operations comprising: identifying features from a set of user interactions; identifying a policy for using the features in developing a dialog manager; performing, based on the policy, a linear evaluation on the features, to yield a set of features; repeating a cubic policy process on the set of features until the set of features results in a reduced set of features having a quantity below a threshold, the cubic policy process comprising a least-squares policy iteration algorithm; and generating the dialog manager using a modified set of user interactions, the modified set of user interactions being selected based on the reduced set of features. 11. The system of claim 8 , the computer-readable storage medium having additional instruction stored which result in the operations further comprising ignoring, during generation of the dialog manager, features which are not in the reduced set of features.