BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Claremont Center for the Mathematical Sciences - ECPv6.15.17.1//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Claremont Center for the Mathematical Sciences
X-ORIGINAL-URL:https://colleges.claremont.edu/ccms
X-WR-CALDESC:Events for Claremont Center for the Mathematical Sciences
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Los_Angeles
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20210314T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20211107T090000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20220313T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20221106T090000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20230312T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20231105T090000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20220131T161500
DTEND;TZID=America/Los_Angeles:20220131T171500
DTSTAMP:20260405T175348
CREATED:20220116T203846Z
LAST-MODIFIED:20220118T032454Z
UID:2533-1643645700-1643649300@colleges.claremont.edu
SUMMARY:APPLIED MATH SEMINAR: Archetypal analysis by Professor Braxton Osting (University of Utah)
DESCRIPTION: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 is minimal. In this talk\, I’ll give an overview of the method and discuss connections to matrix factorization\, SVD/PCA\, and the k-means clustering method. I’ll discuss our recent results proving the consistency of archetypal analysis and describe probabilistic methods for approximate archetypal analysis. This is joint work with Ruijian Han\, Dong Wang\, Yiming Xu\, and Dominique Zosso.
URL:https://colleges.claremont.edu/ccms/event/applied-math-seminar-braxton-osting-university-of-utah/
LOCATION:CA
CATEGORIES:Applied Math Seminar
END:VEVENT
END:VCALENDAR