Even though the sparse matrix has many zeros, and zero times anything is always zero, the standard approach requires this pointless operation ... ... <看更多>

According to the matlab help, you can "disassemble" a sparse matrix with [i,j,s] = find(S);. This means that if you have two matrices S and ... ... <看更多>

Sparse matrix formats capitalise on this premise by only storing the non-zero values thereby reducing both storage/memory requirements and processing effort for ... ... <看更多>