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Walter Dempsey

dblp:126/1693 · DBLP profile ↗
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1ranked-venue papers
0as first author
0since 2021 · last 2012
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Theoretical computer science
1 paper
Information theory · 77% Algorithms and data structures · 23%

Topics — the 2 heaviest of 2, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Information theory › signal processing › time-frequency analysis
multiresolution analysis
0.112012
Multiresolution analysis on the symmetric group · NIPS 2012
Algorithms and data structures › linear algebra › linear algebra algorithms
fast transforms
0.012012
Multiresolution analysis on the symmetric group · NIPS 2012

Methods — techniques the papers use, named apart from their topics

fast wavelet transform · 0.1coset-based multiresolution analysis · 0.1
YearPublicationVenuePosition
2012 Multiresolution analysis on the symmetric group
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.
Risi Kondor, Walter Dempsey
NIPS2