Information processing device, information processing method, information processing device program, and recording medium

A method of processing information in an information processing device that processes information, the method comprising:

• a pair search word generating step of, in association with user specifying information for specifying a user who uses search words and search time specifying information for specifying search times which are times at which search processing is executed using the search words, generating a pair search word which is obtained by forming a pair of a preceding search word and a subsequent search word in the search times in accordance with an order of the search times, from search words in which intervals between the search times associated with the identical user specifying information are within a predetermined time, with reference to a search word memory unit that stores the search words;
• a first appearance count calculating step of calculating a first appearance count that a specific pair search word appears among pair search words generated in the pair search word generating step;
• a second appearance count calculating step of calculating a second appearance count that a reverse order pair search word obtained by reversing a search time of the specific pair search word appears;
• and
• a memory step of, when a magnitude relationship between the first appearance count and the second appearance account calculated in the first and second appearance count calculating steps satisfies a predetermined condition, storing the preceding search word and the subsequent search word as a thesaurus.

A recording medium having a non-transitory computer-readable information processing device program recorded thereon that causes a computer to function as:

• a pair search word generating unit that, in association with user specifying information for specifying a user who uses search words and search time specifying information for specifying search times which are times at which search processing is executed using the search words, generates a pair search word which is obtained by forming a pair of a preceding search word and a subsequent search word in the search times in accordance with an order of the search times, from search words in which intervals between the search times associated with the identical user specifying information are within a predetermined time, with reference to a search word memory unit that stores the search words;
• a first appearance count calculating unit that calculates a first appearance count that a specific pair search word appears among pair search words generated by the pair search word generating unit;
• a second appearance count calculating unit that calculates a second appearance count that a reverse order pair search word obtained by reversing a search time of the specific pair search word appears;
• and
• a memory unit that, when a magnitude relationship between the first appearance count and the second appearance account calculated by the first and second appearance count calculating unit satisfies a predetermined condition, stores the preceding search word and the subsequent search word as a thesaurus.