Editing Computer music (section)

===Statistical style modeling===
Style modeling implies building a computational representation of the musical surface that captures important stylistic features from data. Statistical approaches are used to capture the redundancies in terms of pattern dictionaries or repetitions, which are later recombined to generate new musical data. Style mixing can be realized by analysis of a database containing multiple musical examples in different styles. Machine Improvisation builds upon a long musical tradition of statistical modeling that began with Hiller and Isaacson's ''Illiac Suite for String Quartet'' (1957) and Xenakis' uses of [[Markov chains]] and [[stochastic processes]]. Modern methods include the use of [[lossless data compression]] for incremental parsing, prediction [[suffix tree]], [[string searching]] and more.<ref>Shlomo Dubnov, Gérard Assayag, Olivier Lartillot, Gill Bejerano, "Using Machine-Learning Methods for Musical Style Modeling", ''[[Computer (magazine)|Computers]]'', 36 (10), pp. 73–80, October 2003. {{doi|10.1109/MC.2003.1236474}}</ref> Style mixing is possible by blending models derived from several musical sources, with the first style mixing done by S. Dubnov in a piece NTrope Suite using Jensen-Shannon joint source model.<ref>Dubnov, S. (1999). "Stylistic randomness: About composing NTrope Suite." ''[[Organised Sound]]'', 4(2), 87–92. {{doi|10.1017/S1355771899002046}}</ref> Later the use of [[factor oracle]] algorithm (basically a ''factor oracle'' is a finite state automaton constructed in linear time and space in an incremental fashion)<ref>{{cite book |url=https://books.google.com/books?id=JtMYxwzUL00C&q=Factor+oracle%3A+a+new+structure+for+pattern+matching&pg=PA295 |editor1=Jan Pavelka |editor2=Gerard Tel |editor3=Miroslav Bartosek |quote=Lecture Notes in Computer Science 1725 |pages=291–306 |publisher=Springer-Verlag, Berlin |year=1999 |isbn=978-3-540-66694-3 |title=Factor oracle: a new structure for pattern matching; Proceedings of SOFSEM'99; Theory and Practice of Informatics |access-date=4 December 2013}}</ref> was adopted for music by Assayag and Dubnov<ref>"Using factor oracles for machine improvisation",
G. Assayag, S. Dubnov, (September 2004) ''Soft Computing'' 8 (9), 604–610 {{doi|10.1007/s00500-004-0385-4}}</ref> and became the basis for several systems that use stylistic re-injection.<ref>"Memex and composer duets: computer-aided composition using style mixing", S. Dubnov, G. Assayag, ''Open Music Composers Book'' 2, 53–66</ref>