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2 votes
1 answer
131 views

Minimum re-labeling to make an array as close as possible to another one

I have an array with integer labels in [0, n-1], say arr1=[1, 0, 3, 2] with n = 3. And then I have another array again with integer labels in [0, n-1], say arr2=[0, 0, 2, 3]. How can I find the ...
ApPs's user avatar
  • 23
1 vote
1 answer
755 views

Calculating all combinations from arrays AND (arrays OR floats)

Context: My question comes from needing to iterate different np.arange arrays. The main motivation is to calculate all the possible combinations between the arrays, ...
nuwe's user avatar
  • 163
2 votes
1 answer
1k views

Fast brute force numpy array combination

I want to extract the combinations of numpy arrays in this way: ...
snowflake's user avatar
  • 275
4 votes
1 answer
3k views

Permutations with a sum constraint

I have made the following function that gives the combinations permuted of n elements with a constrain/rule. This consist on creating a dataframe with all combination of numbers from 0 to n that sums ...
PeCaDe's user avatar
  • 143
11 votes
2 answers
532 views

Approximate (250 over 100) permutation best fitting certain criteria

Given a list of 250 words of 4 letters each, what is the fastest way, in Python, to find a subsample of 100 words (drawn without replacement) so that the distribution of letters across the whole ...
jona's user avatar
  • 305
1 vote
1 answer
10k views

Fastest way for working with itertools.combinations

I need to speed up the function below: ...
querzy's user avatar
  • 13