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Gilles commented on MATH-1233: ------------------------------ Several things will have changed or disappeared "abruptly" when 4.0 will be released. :) The release notes should contain the context to help people with upgrading their code. > Uncommon wilcoxon signed-rank p-values > -------------------------------------- > > Key: MATH-1233 > URL: https://issues.apache.org/jira/browse/MATH-1233 > Project: Commons Math > Issue Type: Bug > Affects Versions: 3.5 > Reporter: Icaro Cavalcante Dourado > Assignee: Rob Tompkins > Fix For: 4.0 > > Attachments: MATH-1233-test.patch > > > This implementation in WilcoxonSignedRankTest looks weird. For equal vectors, > the correct pValue should be 1, because it is the probability of the vectors > to come from same population. > On the opposite, this implementation returns ~0 for equal vectors. So we need > to analyze the returned pValue > significanceLevel to reject H0 hypothesis, > while in R and many others tools we perform the opposite: pValue <= > significanceLevel gives us an argument to reject null hypothesis. -- This message was sent by Atlassian JIRA (v6.3.15#6346)