本文给出一个反例,指出在一般的字典中,稀疏表示中正交匹配搜索(OMP)算法不能得到测量的最稀疏信号,从而说明匹配搜索、正交匹配搜索等贪婪算法在稀疏表示中不能保证每一个测量能得到信号的最稀疏表示.
In this paper, we give a example, which show that gotten by orthogonal matching pursuit in a general dictionary. pursuit and orthogonal matching pursuit can not guarantee representation for signal. the sparsest representation can not be Hence, we conclude that matching that every measure can get sparsest