This tag clustering apparatus and method based on the associated tags are disclosed. Tags clustered device given population including the content of one of the same content to relevant that tags from two each associated tag pairs (related tag pair) of each extract each mapping to associate the tag mapping module (related tag mapping module), tag in the mapping process, the tag associated from the frequency extraction module (frequency extracting module), the weight matrix to generate a weight matrix based on the frequency of the associated tag pair generation module (weight matrix generating module), and the weighting matrix for extracting the frequency of occurrence of the same tag by extracting only those tags associated with a threshold frequency or more of the pairs comprises a tag clustering module for generating a tag cluster (cluster tag) (tag clustering module). In particular, the associated tag mapping module, extracting an association tag pairs to be considered a tag that represents the tags, and tags indicating the synonyms, and short bonmal showing a different pronunciation for the same foreign words with the same tag, respectively. Tag-based search results is improved by the present invention, it improves the performance of the navigation information using the semantic relations of tags.
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