nnls meaning in English

非负二乘解

At the same time , we optimize the method by initializing the snmf with the spherical k - means and the nnls ( non - negative least squares ) . by combination of snmf and the method lpi ( locality preserving indexing ) , we get better performance in clustering accuracy
同时采用球形k -平均算法和nnls (非负最小平方差)算法的结果初始化snmf算法以达到改进和优化snmf算法的目的;通过结合snmf算法与lp ( i局部保留索引)算法以实现在无监督的方式下取得更准确聚类结果的算法。