BestTechVideos: Videos Tagged with 'VideoLectures.Net'

Finding frequent patterns from data

BestVideos — Tue, 28 Oct 2008 15:55:01 GMT

Discovery of frequent patterns = finding positive conjunctions that are true for a given fraction of the observations - this basic idea can be instantiated in many ways: - finding frequent sets from 0/1 data (association mining) - finding frequent episodes in sequences - finding frequent subgraphs in graphs etc. - efficient algorithms exist -- the levelwise approach - theoretical analysis of the algorithms is not trivial - leads to connections to hypergraph transversals etc. - the second part: how can the patterns be used? - sometimes interesting in themselves - can be used to approximate the joint distribution - maximum entropy approaches - combining information from several patterns - ordering patterns

Author: Heikki Mannila, Helsinki University Of Technology

BestTechVideos: Videos Tagged with 'VideoLectures.Net'

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