该算法首先根据相关原子挑选多个原子作为候选集，然后从候选集中按照正则化原则挑选出部分原子，最后将其并入最终的支撑集，从而实现了原子的快速、有效选择-Firstly, a plurality of atoms selected on the basis of the candidate sets as atoms, and from the candidate set according to the principle of the selection of the regular part o