An information processing program for causing a computer to execute a process including: acquiring an index value, the index value indicating how many data sets have correct classification results obtained by classifying data sets for each of a plurality of attribute value patterns different from each other with a classifier; identifying, based on the acquired index values, one or more of first attribute value patterns among the plurality of attribute value patterns, each of the one or more of the first attribute value patterns being an attribute value pattern having a relatively small number of data sets with the correct classification results; in a case of classifying a target data set, determining whether at least any one of the identified one or more of first attribute value patterns matches the target data set; and outputting a result of the determining.

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