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When the code scales so poorly in the face of large inputs that it cannot complete in a reasonable amount of time, use this instead of the [performance] tag.

2 votes

Performance issue in python- network creation based on the Euclidean distance with nested fo...

Boy, those are huge numbers. 5000 Nodes results in an adjacency matrix with 25 million entries. But since Deltaik(a,b) == Deltaik(b,a), you don't actually need to consider the whole cartesian product. …
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