1. At least one non-transitory processor readable medium for storing a database configured to be readable by at least one processor for instructing the at least one processor to execute a computer process, wherein the database comprises: common linguistic model data configured to infer a word or a sentence from a character acquired by recognizing a language input by a user; and individual linguistic model data configured to infer a word or a sentence related to a user by collecting recognition-related information transmitted through one or more client devices used by a user after storing the common linguistic data and analyzing the collected recognition-related information.