# sparse

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## sparse

A sparse matrix (or vector, or array) is one in which most of the elements are zero. If storage space is more important than access speed, it may be preferable to store a sparse matrix as a list of (index, value) pairs or use some kind of hash scheme or associative memory.
References in periodicals archive ?
The sparsest cut algorithms mentioned in Section 3.1 provide O(log n) approximation algorithms for the flux and minimum quotient separator problems, even in the case where edges and nodes are weighted and where edges are directed.
The main idea to solve this problem is obtaining an approximate solution instead of the sparsest one.
Yavneh, "A plurality of sparse representations is better than the sparsest one alone," IEEE Transactions on Information Theory, vol.
Sun, "Recovery of sparsest signals via lq-minimization," Applied and Computational Harmonic Analysis, vol.
The decorations get less every year, with this year being the sparsest I can ever remember.
With the sparsest of musical backing, it's full of dignity, although you almost feel like you're intruding into a private harrowing moment.
The coroner said some of the home's medical records contained "only the sparsest details".
The method of sparse subspace clustering (SSC) [6, 7] pursues the sparsest representation for each data point by using the [l.sub.1]-norm regularization.
However, this criterion is not convex, and finding the sparsest solution of Eq.
Equation (8) seeks the sparsest one among all the possible solutions of y = [THETA]s.
By enforcing sparsity using l1 norm just like the method L1-SVD, the spatial spectrumis given by finding the sparsest solution in a redundant basis.
This formulation is equivalent to finding the sparsest solution, whereas the well known TSVD method tries to find the minimum energy solution ([[??].sub.2] norm minimization).

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