Week of Events
APPLIED MATH SEMINAR: Archetypal analysis by Professor Braxton Osting (University of Utah)
APPLIED MATH SEMINAR: Archetypal analysis by Professor Braxton Osting (University of Utah)
Archetypal analysis is an unsupervised learning method that uses a convex polytope to summarize multivariate data. For fixed k, the method finds a convex polytope with k vertices, called archetype points, such that the polytope is contained in the convex hull of the data and the mean squared distance between the data and the polytope […]
Niho’s last conjecture (Daniel Katz, Cal State Northridge)
Niho’s last conjecture (Daniel Katz, Cal State Northridge)
A power permutation of a finite field F is a permutation of F whose functional form is x -> x^d for some exponent d. Power permutations are used in cryptography, and the exponent d must be chosen so that the permutation is highly nonlinear, that is, not easily approximated by linear functions. The Walsh spectrum […]
Exploiting metric structure for more accurate classification (Prof. Mike Izbicki)
Exploiting metric structure for more accurate classification (Prof. Mike Izbicki)
Title: Exploiting metric structure for more accurate classification Speaker: Mike Izbicki, Department of Mathematical Sciences, Claremont McKenna College Abstract: Classification problems often have many semantically similar classes. For example, the famous ImageNet dataset contains classes for 80 different dog breeds, 40 different bird species, and 25 types of vehicles. This semantic structure can be formalized using a metric […]