Problems with random walk

[nikitabaldan]

Hi,
I've two problems with random walk kernel. The first one is that putting the flag of normalizing = True, the similarity matrix is all 1's.
The second issue is that, if I put the normalizing flag = False, the diagonal of the similarity matrix is not 0.
This is the code:

def computeKernelRW(graphs):
    print("-- computing kernel")
    rw_kernel = GraphKernel(kernel=[{"name": "random_walk","lamda":0.5}],normalize=False)
    return  rw_kernel.fit_transform(graphs)

And this is the call on the main:

K = computeKernelSP(graphs)

[ysig]

Please have a look at this past (closed) issue #8