MetaclusteringMetaclusteringhttp://www.haverford.edu/calendar/details/255301KINSC Hilles 109 2014-04-23T16:30:002014-04-23T18:00:00
April 23, 4:30PM–6:00PM
KINSC Hilles 109
Distinguished Visitor, Suresh Venkatasubramanian, Associate Professor in the School of Computing, University of Utah
Clustering is one of the most popular exploratory analysis tools available. Because it's unsupervised, it's easy to run without large amounts of training data. But because it's unsupervised, it's much harder to determine whether the resulting answers are good, or meaningful. Metaclustering is the larger effort of trying to take the outputs provided by clustering algorithms and derive answers that are meaningful, either by identifying patterns that are common among different methods, finding clusterings that are of good quality but give different perspectives on data, or even understanding how "robust" a particular grouping of data is.
Doing this requires understanding the "shape" of the space of clusterings of data, as well as tools to manipulate this space. I'll discuss our recent efforts in this regard, as well as new work on determining how reliable a given clustering actually is. This is part of a larger focus on the problem of "accountability" in data mining.
Suresh Venkatasubramanian's work in the design and analysis of algorithms, computational geometry, data mining and machine learning, and algorithms for large data problems has led him to hold additional posts as a Visiting Scientist at Google and at the Simons Institute for Theoretical Computer Science. He is currently participating in a program on the Theoretical Foundations of Big Data Analysis at the Simons Institute as a long-term participant. Before becoming a professor at the University of Utah, Suresh was a member of the technical staff at AT&T Labs. He has written more than 50 papers that have appeared in the top conferences and journals in his field. In addition to his distinguished research career, Suresh has received the University of Utah Dean’s Commendation letter for teaching excellence five times and has been an invited speaker at many conferences and universities.
Tea at 4:15 PM
Sponsored by the Department of Computer Science in conjunction with the Mathematics Colloquium and the Distinguished Visitors Program
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