Swap/disk memory problems and runtime analysis

[magsol]

Swap/disk memory problems and runtime analysis

[MOJTABAFA]

@magsol , As I know the u vector will reconstruct the Dictionary, as a consequence sparsity of U will lead the sparsity of Dictionary and I think the dictionary could not be sparse . Is there any possibility to shrink the size of our U vector ? here our U vector size is P which is number of observation ( columns) . Again the problem here is the number of observations which are extremely large.Thus is there any programming solution for partitioning the U vector ? for example dividing U to 10 part and then merging them ?I know it seems theoretically impossible, but I just wanted to know for my self.