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Satisficing Search Algorithms for Selecting Near-Best Bases in Adaptive Tree-Structured Wavelet Transforms Carl Taswell Mallat and Zhang [3] developed a greedy algorithm for the selection of the best matching pursuit decomposition of a signal into time-frequency packets from a large collection of such packet waveforms. The matching pursuit decomposition can be performed either with or without backprojection [3], [4] resulting in either orthogonal or nonorthogonal decompositions. The computational cost of the non-orthogonal matching pursuit algorithm is O(M LN ) where M