From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Thu, 14 Jan 2016 09:04:16 +0000 (+0000)
Subject: Fix percentages for bayes confidence
X-Git-Tag: 1.1.0~48
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8803f26e7ad1fddcf0b964f6b88cbae6f3bdfa32;p=thirdparty%2Frspamd.git

Fix percentages for bayes confidence
---

diff --git a/src/libstat/classifiers/bayes.c b/src/libstat/classifiers/bayes.c
index 3204efc161..901e00a335 100644
--- a/src/libstat/classifiers/bayes.c
+++ b/src/libstat/classifiers/bayes.c
@@ -286,7 +286,11 @@ bayes_classify (struct rspamd_classifier * ctx,
 			final_prob = 1.0 - final_prob;
 		}
 
-		rspamd_snprintf (sumbuf, 32, "%.2f%%", final_prob * 100.);
+		/*
+		 * Bayes p is from 0.5 to 1.0, but confidence is from 0 to 1, so
+		 * we need to rescale it to display correctly
+		 */
+		rspamd_snprintf (sumbuf, 32, "%.2f%%", (final_prob - 0.5) * 200.);
 		final_prob = bayes_normalize_prob (final_prob);
 		g_assert (st != NULL);
 		cur = g_list_prepend (NULL, sumbuf);