1. A method to reduce an amount of processing required to generate a response to a first case by a question answering system, the method comprising: determining that a similarity score, of the first case relative to a second case, exceeds a similarity threshold; identifying, by operation of one or more computer processors, a first feature of the second case having a first relevance score exceeding a relevance threshold, wherein the relevance score indicates that the first feature is relevant in generating a correct response to the second case; determining, based on the similarity score and the first relevance score, that the first feature is relevant in generating a correct response to the first case; identifying a first candidate answer for the first case that does not have the first feature; and refraining from analyzing the first candidate answer in generating the response to the first case, thereby reducing the amount of processing of the question answering system.
1. A method to reduce an amount of processing required to generate a response to a first case by a question answering system, the method comprising: determining that a similarity score, of the first case relative to a second case, exceeds a similarity threshold; identifying, by operation of one or more computer processors, a first feature of the second case having a first relevance score exceeding a relevance threshold, wherein the relevance score indicates that the first feature is relevant in generating a correct response to the second case; determining, based on the similarity score and the first relevance score, that the first feature is relevant in generating a correct response to the first case; identifying a first candidate answer for the first case that does not have the first feature; and refraining from analyzing the first candidate answer in generating the response to the first case, thereby reducing the amount of processing of the question answering system. 4. The method of claim 1 , wherein the similarity score is computed based on a context of the first case matching a context of the second case.