All Questions
Tagged with mathematics python
202
questions
6
votes
3
answers
1k
views
Implementation of Euler-Maruyama numerical solver
I am trying to write a python implementation of Euler-Maruyama and Milstein schemes for numerically solving stochastic differential equations. The pseudo-code for the algorithms is in the Wikipedia ...
- 397
5
votes
3
answers
909
views
Optimizing Pi Estimation Code
I'm trying to write a program in Python that estimates pi, but to get a more accurate estimation in a feasible amount of time, I want to make it faster.
I'm using a method that estimates the area of ...
4
votes
1
answer
63
views
Array Math to Calculate Ice Thickness -- Need Help Simplifying
I posted this on Stack but since it's working code, it was suggested I post it here. I wrote this code to calculate ice thickness using the following equation from Stephenson, 2011.
It's a daily ...
- 41
2
votes
2
answers
77
views
Can I make my percolation in python function more efficient?
We've been tasked with finding out how many randomly distributed discs with radius = 1 it takes to form a chain of discs from the left side to the other of a square with side length = sqrt(n), and ...
- 23
2
votes
1
answer
132
views
Multithreaded sparse linear solver in Python
I would like to know if there are any multithreaded sparse linear solvers for LU decomposed sparse matrices.
I want to increase the solving speed of a system like:
...
- 29
6
votes
4
answers
436
views
Optimal Solution for the Four Divisors Problem on LeetCode
I recently encountered the Four Divisors problem on LeetCode and managed to achieve a 100% beat rate with my solution. I'd like to share it with you all and gather feedback on its effectiveness and ...
- 67
1
vote
1
answer
261
views
Implementing Preconditioned conjugate gradient
I have implemented the Preconditioned Conjugate Gradient (PCG) method for solving a system of linear equations in Python and I would appreciate it if someone could verify its correctness since I am ...
- 29
2
votes
1
answer
256
views
Python integer optimization with PuLP involving polynomials that I think can be faster
I have a problem where we are given multivariate polynomials in variables like y_i and z_j and the goal is to express them as sums of products of terms of the form y_i-z_j with nonnegative integer ...
- 225
3
votes
1
answer
350
views
Python function to find the count of digits of numerals in base n up to a given limit
This is a simple exercise to find the count of digits of all numerals in a given base up to a given limit (not including the limit), I wrote it to determine the ratio of bytes saved when the numbers ...
- 3,178
-2
votes
1
answer
185
views
Design an algorithm to predict words based on a skeleton from a given dictionary
The model I'm building first selects a secret word at random from a list. The model which uses an API then returns a row of underscores (space separated)—one for each letter in the secret word—and ...
- 232
5
votes
1
answer
287
views
Identify distance degeneracies on square and hexagonal lattices
I have an interest in how the number of ways you can reach from the origin to a certain distance on both square and hexagonal lattices. If L is the square of the distance and integer pairs (i, j) are ...
- 473
2
votes
0
answers
82
views
Python script that generates images using Thue-Morse sequence
In mathematics, the Thue–Morse sequence, or Prouhet–Thue–Morse sequence, is the binary sequence (an infinite sequence of 0s and 1s) obtained by starting with 0 and successively appending the Boolean ...
- 3,178
1
vote
2
answers
584
views
Removing Elements from an Array Based on a Second Array
I've written a function that takes two arrays of integers as input and removes all the elements in the first array that are also present in the second array. I would like to share my code with you and ...
- 523
1
vote
1
answer
52
views
Optimizing the Dig Pow function
I have written a Python function to solve the Dig Pow problem, where the goal is to find a number k such that the sum of each digit of n raised to a specific and ...
- 523
2
votes
1
answer
82
views
Readable Backprogragation calculations in Numpy Neural Network
As an exercise we should write a small Neural Network with the following structure:
There should be additionally a bias for each layer and sigmoid should be used as the activation function.
The ...
- 51