Using U,S, VT = torch.linalg.svd(M), the matrix 'M' is large, so I am getting the matrices U and VT as non orthogonal. When I compute torch.norm(torch ...
Using U,S, VT = torch.linalg.svd(M), the matrix 'M' is large, so I am getting the matrices U and VT as non orthogonal. When I compute torch.norm(torch ...
import numpy as np def MATINV(N, A): ''' A = [B | D] returns A = [I | B^-1 * D] if A[:,:N] \= eye(N) then deter(B) == 0 ...
I'm trying to simulate the 2D Schrödinger equation using the explicit algorithm proposed by Askar and Cakmak (1977). I define a 100x100 grid with a co ...
I've always assumed that 256,007 would take up less space and be subject to less error than a number like .000333. For context of the question, in an ...
The expression (exp(t) - 1)/t converges to 1 as t tends to 0. However, when computed numerically, we get a different story: Is there some way I can ...
For some real value b and c in [-1, 1], I need to compute sqrt( (b²*c²) / (1-c²) ) = (|b|*|c|) / sqrt((1-c)*(1+c)) Catastrophic cancellation appears ...
I'm trying to investigate the behavior of the following Delayed Differential Equation using Python: where f is a cut-off function which is essentia ...
I want to compute the squared euclidean in a fast way, as described here: What is the fastest way to compute an RBF kernel in python? Note1: I am o ...
Any non-zero recurrent_dropout yields NaN losses and weights; latter are either 0 or NaN. Happens for stacked, shallow, stateful, return_sequences = a ...
I have this code I expected the coefficients to be something similar to [1,2]. Instead, with N =20000, R keeps throwing at me random numbers that ...
In order to prevent divisions by zero in TensorFlow, I want to add a tiny number to my dividend. A quick search did not yield any results. In particul ...
Edit: Simplex the mathematical optimization algorithm, not to be confused with simplex noise or triangulation. I'm implementing my own linear program ...
I am trying to solve this differential equation with the Euler Method using Python3: According to Wolfram Alpha, that's the plot of the correct equ ...
When evaluating with IEEE 754 floating point numbers a and b, what is the worst case error in terms of the magnitude of a and b of the sum (a - b) + b ...
I am using CVXPY (version 1.0) to solve a quadratic program (QP) and I often get this exception: SolverError: Solver 'xxx' failed. Try another so ...
I want to calculate mean,std, skewness, kurtosis and covariance using one pass algorithms. The simplest and fastest one approach I found was published ...
Say I write an expression in c, for example Here a,b,c,d,e,f are all double precision variables. When I compile my code using, for example, the gcc ...
Here is an algorithm of Exponential time differencing method, using the original Matlab code from Oxford Python code Python code runs to some ex ...
I couldn't find a tensorflow built-in that allows you to pass in labels which don't sum to 1, so tried writing my own: (Input is [batch_size,labels]) ...
Why does chisq.test function in R sorts data before summation in descending order? The code in question is: If I was worried about numerical stabi ...