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. 2014 Dec 14;15(1):400. doi: 10.1186/s12859-014-0400-4

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© Chang et al.; licensee BioMed Central. 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Comparison L 1, L 2, and CS . (Example 6, linear case) statistics of success rate and error among 50 trials: (A) success rate (blue bar) and reconstruction error (red bar) (B) component-wise reconstruction error. By reducing coherence, we can improve the success rate as shown in Figure 7 (A). Also, since L2-regularization does not encourage sparsity but distributes the coefficients to be more similar to each other, component-wise errors are distributed as shown in (B).