Calculate K for H0

`k_h0` calculates the smallest number of relevant documents there would have to be in our urn, for us to have missed a given recall target

Usage

k_h0(r_al, r_seen, recall_target)

Arguments

r_al

The number of relevant documents seen before drawing from the urn began

r_seen

The total number of relevant documents seen.

recall_target

The recall target.

Value

k The smallest integer compatible with our null hypothesis