Multiresolution analysis on the symmetric group
Risi Kondor · Walter H Dempsey
2012 Poster
Abstract
There is no generally accepted way to define wavelets on permutations. We address this issue by introducing the notion of coset based multiresolution analysis (CMRA) on the symmetric group; find the corresponding wavelet functions; and describe a fast wavelet transform of O(n^p) complexity with small p for sparse signals (in contrast to the O(n^q n!) complexity typical of FFTs). We discuss potential applications in ranking, sparse approximation, and multi-object tracking.
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