1. A computer-readable recording medium that stores a computer program for classifying a plurality of logs recorded in a log file, wherein the computer program causes a computer to execute: performing a parsing of the logs in the log file; generating a rule for a data classification based on a result of the parsing; performing the data classification, based on the rule generated, to classify the logs into a plurality of groups; displaying a result of the data classification; and editing the rule based on an instruction from a user.