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Using ACE XML 2.0 to Store and Share Feature, Instance and Class Data for Musical Classification

This paper introduces ACE XML 2.0, a set of file formats that are designed to meet the special representational needs of research in automatic music classification. Such standardized formats are needed to facilitate the sharing and long-term storage of valuable research data. ACE XML 2.0 is designed to represent a broad range of musical information clearly using a flexible, extensible, selfcontained and formally structured framework. An emphasis is placed on representing extracted feature values, feature descriptions, instance annotations, class ontologies and related metadata.