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theislab / txsim

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Question on coexpression_similarity metric (potential bug) #116

Open soerenab opened 5 months ago

soerenab commented 5 months ago

Hi, thanks a lot for developing this package!

I have a question on the coexpression_similarity metric: why do you divide the coexpression difference matrix by 2? https://github.com/theislab/txsim/blob/dev/txsim/metrics/_coexpression_similarity.py#L208

I have also seen this on the main branch: https://github.com/theislab/txsim/blob/main/txsim/metrics/_coexpression_similarity.py#L281

I don't understand why this is necessary, doesn't this just (somewhat arbitrarily) scale down the actual differences?

Thank you for any explanation :)