24 февр. 2021 г. · I am writing my own function that calculates the Laplacian matrix for any directed graph, and am struggling with filling the diagonal entries of the resulting ...

10 февр. 2020 г. · I found some problems in calculating the symmetric normalised laplacian matrix in python. Suppose to have the matrix S and its diagonal degree matrix D.

15 апр. 2021 г. · I have been tirelessly trying to find the Laplacian matrix but I can't seem to find what I am doing wrong. Here's my code:

20 янв. 2016 г. · I need to construct the 2D laplacian which looks like this: 2D_Laplacian , where enter image description here , and I is the identity matrix.

14 янв. 2011 г. · I need the Python / Numpy equivalent of Matlab (Octave) discrete Laplacian operator (function) del2(). I tried couple Python solutions, none of which seem to ...

5 июл. 2019 г. · I have a numpy masked array and I want to calculate the Laplacian then variance of the masked array.

19 нояб. 2009 г. · I'm trying to compute the laplacian of a 2d field A using scipy.ndimage.convolve. stencil = numpy.array([[0, 1, 0],[1, ...

27 авг. 2010 г. · Assume that I have an affinity matrix A and a diagonal matrix D. How can I compute the Laplacian matrix in Python with nympy? L = D^(-1/2) ...

24 нояб. 2017 г. · I have a sparse matrix A in csr_matrix format. A is the weighted adjacency matrix of an undirected graph and thus symmetric and nonnegative. I want to ...

3 июл. 2015 г. · a Laplacian is 1 number, dxx + dyy , at each point x y . Over a range of hills, we get a scalar field. (Functions or hills with Laplacian = 0 ...