Maarten Grachten

Personal Information

Employment

2010-	Post Doctoral Researcher at the Department of Computational Perception; Johannes Kepler University, Linz, Austria
2010	Post Doctoral Researcher at the Institute of Psychoacoustics and Electronic Music (IPEM), University of Ghent.
2007-2009	Post Doctoral Researcher at the Department of Computational Perception; Johannes Kepler University, Linz, Austria
2006	Researcher at the Music Technology Group, Pompeu Fabra University, Barcelona, Spain
2001-2006	PhD Researcher at the Artificial Intelligence Research Institute (IIIA), Bellaterra, Spain

Research Interests

Expression in Music Performance;
Computational Models of Cognition;
Machine Learning (in particular probabilistic learning and self organization);
Interactive-Adaptive Music Systems;

...and combinations of the above.

Education

PhD in Computer Science and Digital Communication, Pompeu Fabra University, Barcelona, Spain (2006)
M.Sc./B.Sc. in Artificial Intelligence, University of Groningen, The Netherlands (2001)
Propaedeutic year of Philosophy, University of Groningen, The Netherlands (1996)

E-mail

maarten . leave.this.part.out grachten leave.this.part.out @ leave.this.part.out jku . leave.this.part.out at

Publications

2011

D. Amelynck, M. Grachten, L. Van Noorden, M. Leman (2011). Towards E-Motion Based Music Retrieval: A study of Affective Gesture Recognition. IEEE Transactions on Affective Computing. To appear.
D. Moelants, M. Demey, M. Grachten, C.F. Wu, M. Leman (2011). Performing in concert and in rehearsal: A comparison using audio, video and movement data. Journal of New Music Research. To appear.
M. Grachten, G. Widmer (2011). Explaining expressive dynamics as a mixture of basis functions. In Proceedings of the Eighth Sound and Music Computing Conference (SMC). Padua, Italy. pdf
M. Grachten, G. Widmer (2011). A method to determine the contribution of annotated performance directives in music performances. In Proceedings of the International Symposium of Performance Science. Toronto, Canada. pp. 39-44 pdf
S. Flossmann, M. Grachten, G. Widmer (2011). Expressive Performance with Bayesian Networks and Linear Basis Models. Rencon Workshop 2011: Musical Performance Rendering Competition for computer systems. Extended abstract. pdf
Kovács, Z., Román, A., Vatai, G., Ittzés, A., Grachten, M., Czermak, P. (2011), Experimental and numerical investigations on whey desalination with nanofiltration, in B. Skribić & S Milanović, ed., 'Poceedings of 26th Symposium on Recent Developments in Dairy Technology', University of Novi Sad, Novi Sad, Serbia, pp. 26-32.

2010

M. Grachten, M. Demey, D. Moelants, M. Leman (2010). Analysis and automatic annotation of singer’s postures during concert and rehearsal. In Proceedings of the Seventh Sound and Music Computing Conference (SMC). Barcelona, Spain. pdf
M. Molina-Solana, M. Grachten, G. Widmer (2010). Evidence for Pianist-Specific Rubato Style in Chopin Nocturnes. In Proceedings of the Eleventh International Society for Music Information Retrieval Conference. Utrecht, The Netherlands. pdf
M. Molina-Solana, M. Grachten (2010). Nature versus Culture in ritardando performances. In Proceedings of the Conference on Interdisciplinary Musicology (CIM10). Sheffield, UK. pdf
S. Flossmann, W. Goebl, M. Grachten, B. Niedermayer, G. Widmer (2010). The Magaloff Project: An Interim Report. Journal of New Music Research. 39(4), 363-377.

2009

M. Grachten, M. Schedl, T. Pohle, G. Widmer (2009). The ISMIR cloud: A decade of ISMIR conferences at your fingertips. In Proceedings of the Tenth International Society for Music Information Retrieval Conference. Kobe, Japan. pdf
M. Grachten, G. Widmer (2009). Who is who in the end? Recognizing pianists by their final ritardandi. In proceedings of the Tenth International Society for Music Information Retrieval Conference. Kobe, Japan. pdf
M. Grachten, G. Widmer (2009). The kinematic rubato model as a means of studying final ritards across pieces and pianists. In Proceedings of the 6th Sound and Music Computing Conference. Porto, Portugal. pdf
S. Flossmann, M. Grachten, G. Widmer (2009). Expressive Performance Rendering: Introducing Performance Context. In Proceedings of the 6th Sound and Music Computing Conference. pdf
M. Grachten, W. Goebl, S. Flossmann, G. Widmer (2009). Phase-plane representation and visualization of gestural structure in expressive timing. Journal of New Music Research. Volume 38, Issue 2, pp. 183-195. pdf (preprint)
G. Widmer, S. Flossmann, M. Grachten, (2009). YQX plays Chopin. AI Magazine. Vol. 30, nr. 3. AAAI Press.

2008

S. Flossmann, M. Grachten, G. Widmer (2008). Experimentally Investigating the Use of Score Features for Computational Models of Expressive Timing. In Proceedings of the 10th International Conference on Music Perception and Cognition (ICMPC10). Sapporo, Japan. pdf
M. Grachten, W. Goebl, S. Flossmann, G. Widmer (2008). Intuitive visualization of gestures in expressive timing: A case study on the final ritard. In Proceedings of the 10th International Conference on Music Perception and Cognition (ICMPC10). pp. 228-235. Sapporo, Japan. pdf
H. Purwins, P. Herrera, M. Grachten, A. Hazan, R. Marxer, X. Serra (2008). Computational Models of Music Perception and Cognition I: The Perceptual and Cognitive Processing Chain. Physics of Life Reviews, Volume 5, Issue 3, pp. 151-168. Elsevier. pdf (preprint)
H. Purwins, M. Grachten, P. Herrera, A. Hazan, R. Marxer, X. Serra (2008). Computational Models of Music Perception and Cognition II: Domain-Specific Music Processing. Physics of Life Reviews, Volume 5, Issue 3, pp. 169-182. Elsevier. pdf (preprint)
M. Grachten, W. Goebl, S. Flossmann, G. Widmer (2008). Phase-plane visualizations of gestural structure in expressive timing. In Proceedings of the Fourth Conference on Interdisciplinary Musicology (CIM08). Thessaloniki, Greece. pdf

2007

M. Grachten, G. Widmer (2007). Towards Phrase Structure Reconstruction from Expressive Performance Data. In Proceedings of the International Conference on Music Communication Science (ICOMCS). pp. 56-59. Sydney, Australia. pdf
R. López de Mántaras, M. Grachten, J.L. Arcos (2007). Expressivity-preserving Tempo Transformation for Music - A case.based approach. 29th Annual German Conference on Artificial Intelligence, Bremen, Germany. Lecture Notes in Artificial Intelligence, Vol. 4314, pp. 1-6. Springer. pdf
R. López de Mántaras, M. Grachten, J.L. Arcos (2007). Playing with cases: Tempo transformations of Jazz performances using Case-Based Reasoning. Invited paper at FLAIRS'07: 20th International FLAIRS Conference, Key West, Florida, May 5-9, 2007. AAAI Press, 8-11. pdf
M. Grachten, R. Marxer, A. Hazan, H. Purwins (2007). Attention as musical interplay of bottom-up accents and expectation. In proceedings of the Gospel Workshop on Biologically Inspired Signal Processing, Barcelona, Spain. Extended Abstract.
A. Hazan, P. Herrera, R. Marxer, M. Grachten, H. Purwins (2007). Computational Modeling of Statistical Learning of Tone Sequences. Proceedings of 11th Intl. Conference on Cognitive and Neural Systems; Boston , Massachusetts, USA.

2006

M. Grachten (2006). Expressivity-aware Tempo Transformations of Music Performances Using Case Based Reasoning. PhD Thesis. Pompeu Fabra University. Barcelona, Spain. ISBN: 635-07-094-0. pdf
A. Hazan, M. Grachten, R. Ramirez (2006). Evolving performance models by performance similarity: Beyond note-to-note transformations. Proceedings of the 7th International Conference on Music Information Retrieval (ISMIR06). Victoria, Canada. pdf
M. Grachten, J. Ll. Arcos, R. López de Mántaras (2006). TempoExpress: An expressivity-preserving musical tempo transformation system. Proceedings of the 21st National Conference on Artificial Intelligence}. AAAI-06, Boston, MA. pdf
M. Grachten, J. Ll. Arcos, R. López de Mántaras (2006). A Case Based Approach to Expressivity-aware Tempo Transformation. Machine Learning Journal. Vol. 65, nr. 2-3. pp. 411-437. Springer Netherlands pdf

2005

M. Grachten, J. Ll. Arcos, R. López de Mántaras (2005). Melody Retrieval using the Implication/Realization Model. Online Proceedings of the 6th International Conference on Music Information Retrieval (ISMIR05). Extended abstract. pdf
M. Grachten, F. A. García, J. Ll. Arcos (2005). Navigating through Case Base Competence. Proceedings of ICCBR05: LNCS 3620. pdf

2004

M. Grachten, J. Ll. Arcos, R. López de Mántaras (2004). Melodic similarity: Looking for a good abstraction level. Proceedings of the 5th International Conference on Music Information Retrieval (ISMIR04). Pompeu Fabra University, Barcelona, Spain. pdf
M. Grachten, J. Ll. Arcos (2004). Music Performance Generation as Time Series Prediction, Proceedings of the ECCBR04 Workshops, Madrid, Spain. pdf
M. Grachten, J. Ll. Arcos, R. López de Mántaras (2004). TempoExpress, a CBR Approach to Musical Tempo Transformations. In Advances in Case-Based Reasoning. Proceedings of the 7th European Conference, ECCBR04, Lecture Notes in Computer Science. Springer. pdf
M. Grachten, J. Ll. Arcos (2004) Using the Implication/Realization Model for Measuring Melodic Similarity. In Proceedings of the 16th European Conference on Artificial Intelligence, ECAI04. IOS Press. pdf
M. Grachten, J. Ll. Arcos, R. López de Mántaras (2004). Evolutionary Optimization of Music Performance Annotation. Computer Music Modeling and Retrieval (CMMR04). Esbjerg, Denmark. Springer. pdf
M. Grachten (2004). Global Musical Tempo Transformations using Case Based Reasoning. Doctoral pre-thesis work, Pompeu Fabra University, Barcelona. pdf

2003

E. Gómez, M. Grachten, X. Amatriain, J.Ll. Arcos (2003). Melodic characterization of monophonic recordings for expressive tempo transformations. SMAC03. Stockholm, Sweden. pdf
J. Ll. Arcos, M. Grachten, R. López de Mántaras (2003). Extracting Performers' Behaviors to Annotate Cases in a CBR System for Musical Tempo Transformations. ICCBR 2003: LNCS pp. 20-34. Trondheim, Norway pdf
M. Grachten, J. Ll. Arcos, R. López de Mántaras (2003). Tempo-Express: tempo transformations preserving musical expression. Rencon Workshop of IJCAI03. Acapulco, Mexico. pdf

2002

M. Grachten, J. Ll. Arcos, R. López de Mántaras (2002). A Comparison of Different Approaches to Melodic Similarity. ICMAI02, Edinburgh, UK. pdf ps.zip
A summary of Gilles Gonon's seminar about his dissertation topic: "An Adaptive Transform Based on Entropic Criteria. Application to audio signals." (Universitat Pompeu Fabra, Barcelona, 19-12-2002).

2001

M. Grachten (2001) JIG: Jazz Improvisation Generator. Proceedings of the MOSART Workshop on Current Research Directions in Computer Music, Barcelona, Spain. pdf
A summary of the Music Performance Panel, helt at the MOSART Workshop 2001.

Awards

SMC-Rencon 2011:
- SMC-Rencon Award
- SMC-Rencon Technical Award (the Winner of Stage I)
7th Contest for Performance Rendering Systems (Rencon '08):
- Rencon Award
- Rencon Technical Award
- Rencon Murao Award
Hear the performances of the participating systems. And see the award/voting results.
Winner of the MIREX '05 contest for Symbolic Melodic Similarity. See results (in a figure).
Best Paper Award, ICCBR '03.

Miscellaneous Links

ISMIR Cloud Browser: Interactive topic-based access to the cumulative ISMIR proceedings, using latent semantic analysis.
MTG's list of Workshops and Conferences on Audio-engineering, Music, AI, Acoustics etc (with submission-dates)
Some haphazard fragments of home-brewed documentation.
A very clear and informative website about the status of animals in our present-day society: www.animalfreedom.org Multilingual!
If you prefer a light introduction to the sad life of animals in food-industry, be sure to watch this: www.themeatrix.com
EnsAmble Crumble, the most exciting, impulsive, and untrained music ensemble of Barcelona! We'll play on your architecture festival, chill out party, or in your durum bar! Update: too late, the band disassembled... :-(
Team Radio, Lovecore from Linz.
Butano Bazaar, music that chants, stains and, sweats (from the heart, it's hot).