SIARCT-CFP: improving precision and the discovery of inexact musical patterns in point-set representatio
Sprache des Vortragstitels:
Englisch
Original Tagungtitel:
14th International Society for Music Information Retrieval Conference (ISMIR 2013)
Sprache des Tagungstitel:
Englisch
Original Kurzfassung:
The geometric approach to intra-opus pattern discovery (in
which notes are represented as points in pitch-time space
in order to discover repeated patterns within a piece of music)
shows promise particularly for polyphonic music, but
has attracted some criticism because: (1) the approach extends
to a limited number of inexact repetition types only;
(2) typically geometric pattern discovery algorithms have
poor precision, returning many false positives. This paper
describes and evaluates a solution to the inexactness
problem where algorithms for pattern discovery and inexact
pattern matching are integrated for the first time. Two
complementary solutions are proposed and assessed for the
precision problem, one involving categorisation (hence reduction)
of output patterns, and the second involving a new
algorithm that calculates the difference between consecutive
point pairs, rather than all point pairs.
Forschungs-