说明：  详细介绍了KSVD、OMP、IRLS 、 Dantzig Selector 、MP 等算法的原理，并在MATLAB平台上编程实现，撰写PPT进行讲解。
(The principle of KSVD, OMP, IRLS, Dantzig Selector, MP and other algorithms is introduced in detail, and it is programmed and implemented on MATLAB platform, and PPT is written for explanation.)