Predicting high-level music semantics using social tags via ontology-based reasoning

High-level semantics such as 'mood' and 'usage' are very useful in music retrieval and recommendation but they are normally hard to acquire. Can we predict them from a cloud of social tags? We propose a semantic identification and reasoning method: Given a music taxonomy system, we map it to an ontology's terminology, map its finite set of terms to the ontology's assertional axioms, and then map tags to the closest conceptual level of the referenced terms in WordNet to enrich the knowledge base, then we predict richer high-level semantic information with a set of reasoning rules. We find this method predicts mood annotations for music with higher accuracy, as well as giving richer semantic association information, than alternative SVM-based methods do. ? 2010 International Society for Music Information Retrieval.EI