Automatic Hierarchy Expansion for Improved Structure and Chord Evaluation

Partitioning a recording into non-overlapping time intervals comes in many forms. There is the structural segmentation task which labels structures either syntactically as A and B, or structurally verse chorus. The chord annotation similar, labeling segments by their chords. While of these annotations are flat, this article extends method McFee Kinnaird (2019) for automatically enhancing inferring (and expanding) hierarchical information from segment labels. One our extensions adds new rules that allow with wider vocabulary than syntactical ones SALAMI dataset. Using first extension, we compare Beatles-TUT Isophonics datasets to investigate similarities between annotations. Our second extension creates multi-level chords addresses number current challenges evaluation. large collection (manually generated), how where hierarchies can enhance (or detract from) comparing