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ICASSP
2009
IEEE
14 years 4 months ago
Separation of a subspace-sparse signal: Algorithms and conditions
In this paper, we show how two classical sparse recovery algorithms, Orthogonal Matching Pursuit and Basis Pursuit, can be naturally extended to recover block-sparse solutions for...
Arvind Ganesh, Zihan Zhou, Yi Ma
CCA
2009
Springer
14 years 4 months ago
Computability of Probability Distributions and Distribution Functions
We define the computability of probability distributions on the real line as well as that of distribution functions. Mutual relationships between the computability notion of a pro...
Takakazu Mori, Yoshiki Tsujii, Mariko Yasugi
CIE
2009
Springer
14 years 4 months ago
Ordinal Computability
computability uses ordinals instead of natural numbers in abstract machines like register or Turing machines. We give an overview of the computational strengths of α-β-machines,...
Peter Koepke
MFCS
2007
Springer
14 years 4 months ago
Structural Analysis of Gapped Motifs of a String
Abstract. We investigate the structure of the set of gapped motifs (repeated patterns with don’t cares) of a given string of symbols. A natural equivalence classification is int...
Esko Ukkonen
CIE
2005
Springer
14 years 3 months ago
Computably Enumerable Sets in the Solovay and the Strong Weak Truth Table Degrees
The strong weak truth table reducibility was suggested by Downey, Hirschfeldt, and LaForte as a measure of relative randomness, alternative to the Solovay reducibility. It also occ...
George Barmpalias