ICES Seminar, Scott Mitchell, Sandia National Laboratories, "Exploring High Dimensional Spaces with Hyperplane Sampling"

Contact Name: 
Nora Roostaie
POB 6.304
Jun 10, 2014 3:30pm - 4:30pm
Chandra Bajaj

Talk Audience: UTCS Faculty, Grads, Undergrads, Other Interested Parties

Host:  Chandra Bajaj

Talk Abstract: One problem with higher dimensions is that spaces become bigger, but we still sample them with zero-dimensional points, which stays the same. One solution is k-d darts, sampling using k-dimensional hyperplanes. If we can evaluate the function along a hyperplane, substituting fixed coordinates into an equation, then great! Otherwise, we still gain efficiency by estimating the hyperplane with a surrogate, and adapting our sampling strategy using estimates of surrogate accuracy.