Lakhasly

Music genres are hard to be systematically described and no complete agreement exists in their definition and as- sessment.Under this per- spective, the community plays the role of establishing an ontology of inner phenomena (properties and rules that make a genre) and external differences (habits that em- body distinguishing behavior and trends)."Genres emerge as terms, nouns that define re- currences and similarities that members of a community make pertinent to identify musical events" [11], [5].

Music genres are hard to be systematically described and no complete agreement exists in their definition and as- sessment. ”Genres emerge as terms, nouns that define re- currences and similarities that members of a community make pertinent to identify musical events” [11], [5].
The notion of community here play the role of a self- organizing complex system that enables and triggers the development and assessment of a genre. Under this per- spective, the community plays the role of establishing an ontology of inner phenomena (properties and rules that make a genre) and external differences (habits that em- body distinguishing behavior and trends).
In Information Retrieval the fact that relevance and re- latedness are not local nor objective document properties but global notions that emerge from the entire document base is well known. Every quantitative model in IR rely on a large number of parameters (i.e. term weights) that in fact depend on the set of all indexed documents.