Università degli Studi di Cagliari
Feature selection
07 giugno 2011
Nell'ambito del programma Visiting Professor 2010 finanziato dalla Regione Autonoma della Sardegna,
il Dr. Gavin Brown
(University of Manchester, http://www.cs.man.ac.uk/~gbrown/)
terrà dal 7 al 10 Giugno il seguente ciclo di lezioni sul tema Feature selection.
Tutti gli interessati sono invitati a partecipare.
Descrizione:
This course will introduce the problem of "feature selection" in
pattern recognition and machine learning. We will first cover the
motivations, assumptions, and basic techniques used in current
practice - covering the three main families, "wrappers", "filters" and
"embedded" methods. Once we have this foundation in place, we will
discuss more advanced topics such as how these methods relate to the
multiple classifier systems literature, and how cause/effect can be
taken into account in the feature selection process. Finally, we will
conclude with current research issues for the field, including a
unifying viewpoint on the literature from an information theoretic
perspective.
Caldendario delle lezioni:
7 Giugno, ore 9-11, aula X: Motivations and Basic Methods
1: Assessment methods and Wrappers
2: Uni-variate vs Multivariate Filter Methods
8 Giugno, ore 9-11, aula X: Advanced Filters and Embedded Methods
pattern recognition and machine learning. We will first cover the
motivations, assumptions, and basic techniques used in current
practice - covering the three main families, "wrappers", "filters" and
"embedded" methods. Once we have this foundation in place, we will
discuss more advanced topics such as how these methods relate to the
multiple classifier systems literature, and how cause/effect can be
taken into account in the feature selection process. Finally, we will
conclude with current research issues for the field, including a
unifying viewpoint on the literature from an information theoretic
perspective.
Caldendario delle lezioni:
7 Giugno, ore 9-11, aula X: Motivations and Basic Methods
1: Assessment methods and Wrappers
2: Uni-variate vs Multivariate Filter Methods
8 Giugno, ore 9-11, aula X: Advanced Filters and Embedded Methods
3: Information Theoretic Filters
4: Embedded Methods
9 Giugno, ore 9-11, aula Mocci: The Variance of Feature Selection
4: Embedded Methods
9 Giugno, ore 9-11, aula Mocci: The Variance of Feature Selection
5: Stability
6: Why does Feature Selection Work?
10 Giugno, ore 9-11, aula X: Probabilistic Perspectives
6: Why does Feature Selection Work?
10 Giugno, ore 9-11, aula X: Probabilistic Perspectives
7: Markov Blanket Algorithms
8: A Unifying View via Conditional Likelihood
8: A Unifying View via Conditional Likelihood
Aula X: Facoltà di Ingegneria, via Is Maglias
Aula Mocci: Dip. di Ing. Elettrica ed Elettronica, pad. A
Bio: Gavin Brown is a lecturer in Machine Learning at the School of
Computer Science, University of Manchester, UK. His research career
began in the Multiple Classifier Systems field, studying the
phenomenon of `diversity'. Since this time he has diverged to study
the feature selection problem in an information theoretic framework.
Applications of his work currently include bio-health informatics and
adaptive compilers.
Computer Science, University of Manchester, UK. His research career
began in the Multiple Classifier Systems field, studying the
phenomenon of `diversity'. Since this time he has diverged to study
the feature selection problem in an information theoretic framework.
Applications of his work currently include bio-health informatics and
adaptive compilers.
____________________________________
Giorgio Fumera
Associate Professor of Computer Engineering
Dept. of Electrical and Electronic Eng. - Univ. of Cagliari
Piazza d'Armi, 09123 Cagliari, Italy
phone: +39 070 675 5754 fax: +39 070 675 5782
e-mail: fumera@diee.unica.it web: http://prag.diee.unica.it