V O R T R A G ********************** Oesterreichisches Forschungsinstitut fuer Artificial Intelligence(OFAI) der OSGK Freyung 6/6, A-1010 Wien Tel: +43-1-5336112-17, Fax: +43-1-5336112-77, Email: sec@ofai.at Bob L. Sturm, Ph.D. Associate Professor Audio Analysis Lab, AD:MT Aalborg University Copenhagen http://media.aau.dk/null_space_pursuits/ "SPARSE APPROXIMATION IN SIGNAL PROCESSING AND MACHINE LEARNING" I provide a broad overview of sparse approximation, and a variety of its applications to signal processing and machine learning with a focus on sound and music. In one sense, sparse approximation allows a flexibility in the decomposition of signals. One can define a dictionary of several types of functions with which to linearly express any signal. This has application in, for example, compression, visualization, and source separation. In another sense, sparse approximation allows a flexibility in the description of signals. This technique has applications in, for example, music transcription, source identification, and music genre recognition. Finally, I end with a public service announcement of reproducible research. ********* Time: Thursday, 14th February 2013, 6.30 p.m. sharp Location: Oesterreichisches Forschungsinstitut fuer Artificial Intelligence, OFAI Freyung 6, Stiege 6, 1010 Wien OESTERREICHISCHES FORSCHUNGSINSTITUT FUER ARTIFICIAL INTELLIGENCE Univ.-Prof. Ing. Dr. Robert Trappl, MBA *********