X-Git-Url: https://git.arvados.org/lightning.git/blobdiff_plain/1b027f311ba07d95b1367e946baab261ea2844d4..HEAD:/chisquare.go

diff --git a/chisquare.go b/chisquare.go
deleted file mode 100644
index 31142a1710..0000000000
--- a/chisquare.go
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright (C) The Lightning Authors. All rights reserved.
-//
-// SPDX-License-Identifier: AGPL-3.0
-
-package lightning
-
-import (
-	"golang.org/x/exp/rand"
-	"gonum.org/v1/gonum/stat/distuv"
-)
-
-var chisquared = distuv.ChiSquared{K: 1, Src: rand.NewSource(rand.Uint64())}
-
-func pvalue(a, b []bool) float64 {
-	//     !b        b
-	// !a  tab[0]    tab[1]
-	// a   tab[2]    tab[3]
-	tab := make([]int, 4)
-	for ai, aval := range []bool{false, true} {
-		for bi, bval := range []bool{false, true} {
-			obs := 0
-			for i := range a {
-				if a[i] == aval && b[i] == bval {
-					obs++
-				}
-			}
-			tab[ai*2+bi] = obs
-		}
-	}
-	var sum float64
-	for ai := 0; ai < 2; ai++ {
-		for bi := 0; bi < 2; bi++ {
-			rowtotal := tab[ai*2] + tab[ai*2+1]
-			coltotal := tab[bi] + tab[2+bi]
-			if rowtotal == 0 || coltotal == 0 {
-				return 1
-			}
-			exp := float64(rowtotal) * float64(coltotal) / float64(len(a))
-			obs := tab[ai*2+bi]
-			d := float64(obs) - exp
-			sum += (d * d) / exp
-		}
-	}
-	return 1 - chisquared.CDF(sum)
-}