Exploiting tag similarities to discover synonyms and homonyms in folksonomies (original) (raw)

2013, Software: Practice and Experience

Tag-based systems are widely available, thanks to their intrinsic advantages, such as self-organization, currency, and ease of use. Although they represent a precious source of semantic metadata, their utility is still limited. The inherent lexical ambiguities of tags strongly affect the extraction of structured knowledge and the quality of tag-based recommendation systems. In this paper, we propose a methodology for the analysis of tag-based systems, addressing tag synonymy and homonymy at the same time in a holistic approach: in more detail, we exploit a tripartite graph to reduce the problem of synonyms and homonyms; we apply a customized version of Tag Context Similarity to detect them, overcoming the limitations of current similarity metrics; finally, we propose the application of an overlapping clustering algorithm to detect contexts and homonymies, then evaluate its performances, and introduce a methodology for the interpretation of its results. journal special issues (e.g., ACM RecSys ¶ or UMAP || conference, or SASWeb workshops series, ** ACM Transactions on Intelligent Systems and Technology, and so on) are devoted to them.