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| Seminar Schedule (Seminar Organizer: Prof. Ziv Bar-Joseph) | |
Machine Learning Lunchtime Chats
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Spring 2006 Seminar
Date: April 4, 2006 Time: 2:30 PM - 3:30 PM Location: 1507 Newell-Simon Hall Speaker: Brent Bryan PhD Candidate Title: Active Learning for Identifying Function Threshold Boundaries Abstract: We present an efficient algorithm to actively select queries for learning the boundaries separating a function domain into regions where the function is above and below a given threshold. We develop experiment selection methods based on entropy, misclassification rate, variance, and their combinations, and show how they perform on a number of data sets. We then show how these algorithms are used to determine simultaneously valid 1-a confidence intervals for seven cosmological parameters. Experimentation shows that the algorithm reduces the computation necessary for the parameter estimation problem by an order of magnitude.