Graph Signal Processing, Gsp, Signal Processing, Spectral Analysis, Fourier Transform.
has a negative value. We can define this formally as follows. Let’s call this zero-crossing. So the number of zero-crossing in an eigenvector can be taken to represent some sort of frequency of the eigenvector. Now, let’s look at u50 as follows. u50 We can see that u50 has a lot more zero-crossings