The present invention provides a rule-based user intention inference device for conversation recognition. The apparatus of the present invention is a device for generating a rule for recognizing a conversation and inferring a user's intention based on the rule, which is a set of at least one keyword from conversation data including information about a user's conversation The pre-processing unit for extracting input keyword information including information about a keyword set, and a plurality of intention clusters, which are clusters that collect at least one keyword set in which an inclusion relationship between each other is not established based on the inclusion relationship between the sets. A determination unit for determining whether an intention cluster corresponding to the input keyword information exists, and an update unit for updating a knowledge base (KB) including the plurality of intention clusters using the input keyword information according to the determination result. , Included in the input keyword information among at least one keyword set included in each of the plurality of intention clusters It includes determining portion for determining a set of keywords that include the keyword set.
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