Computation
With the current hardware configuration in lab, it is impossible to compute eigenvalues for a matrix 65K * 65K in Matlab
First, reduced matrix size from 65K to 26K, where the corresponding nodes aggregate most connections
Second, segmented matrix, calculated eigenvalues part by part in the matrix,
Finally, assembled individual eigenvalue sets into one continuous eigenvalue set, the sizes of the set for CAIDA and RouteView are 2.5K and 4.8K, respectively