Abstract: A method of determining a relation between search queries and a system for executing the method are provided. A method of determining a relation between search queries, comprises: maintaining a database including a search session and search queries received from a user terminal during the search session; determining numbers of search sessions where first and second search queries are received during a predetermined time interval; calculating conditional probability based on the determined numbers of search sessions; calculating correlation by using a total number of search sessions and said numbers of search sessions; and determining a relation between said search queries based on said calculated conditional probability and said calculated correlation.

Abstract: A method of determining a relation between search queries, includes: maintaining a database comprising a search session and a record about a search query which is received from a user terminal during the search session; recording and maintaining click rate information for each of the search queries in a predetermined storage unit; generating total search session number information by counting a total number of search sessions which is set during the time interval generating first search session number information by counting a number of search sessions where a first search query is received during the time interval, and generating second search session number information by counting a number of search sessions where a second search query is received during the time interval, by referring to the database; generating third search session number information by counting a number of search sessions where the first search query and the second search query are received during the time interval, by referring to the d