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hanging when finding genewise dispersions #453

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@Dillon214

Hello pydeseq2 devs.
Thank you all for developing this easy-to-use analysis tool. I'm running into extremely long runtimes (or possibly just hanging) when running dds.fit_genewise_dispersions(). I've seen some chatter about similar issues in the past when running dds.deseq2().

As others have pointed out, this issue appears linked to occurences of 0 within the matrix. Adding 1 to all counts seems to resolve the issue, but I'd prefer to avoid this if possible.

Does anyone have practical advice for working around this issue?

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