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Mahmoud's pemp implementation#196

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jcharkow wants to merge 1 commit intoPyProphet:masterfrom
Roestlab:mahmoud_pi0_fix
Open

Mahmoud's pemp implementation#196
jcharkow wants to merge 1 commit intoPyProphet:masterfrom
Roestlab:mahmoud_pi0_fix

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@jcharkow
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@jcharkow jcharkow commented Mar 5, 2026

Mahmoud recommended this change to pemp calculation to make p value estimation more conservative and hopefully fix pi0 from being negative.

I think the main change is that in the case of ties, decoys win the ranking making pi0 more conservative.

I believe that this implementation is slightly different from the R package though.

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jcharkow commented Mar 5, 2026

I think a discussion is warranted on whether this is beneficial.

@jcharkow jcharkow changed the title Mahmoud pemp implementation Mahmoud's pemp implementation Mar 5, 2026
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