From d7425e5af03263b1cce155f2eae03f3ff86cddc7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ricardo=20Montan=CC=83ana?= <rmontanana@gmail.com>
Date: Fri, 23 Jun 2023 01:25:23 +0200
Subject: [PATCH] Remove unneeded small value added to logs

---
 bayesclass/FeatureSelect.cpp | 5 ++---
 bayesclass/FeatureSelect.h   | 2 +-
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/bayesclass/FeatureSelect.cpp b/bayesclass/FeatureSelect.cpp
index ba8db68..e85875a 100644
--- a/bayesclass/FeatureSelect.cpp
+++ b/bayesclass/FeatureSelect.cpp
@@ -100,11 +100,10 @@ namespace features {
             for (auto& [label, jointCount] : jointCounts[feat]) {
                 auto p_l_f = jointCount / count;
                 if (p_l_f > 0) {
-                    double epsilon = 1e-9;
                     if (nat)
-                        entropy_f -= p_l_f * log(p_l_f + epsilon);
+                        entropy_f -= p_l_f * log(p_l_f);
                     else
-                        entropy_f -= p_l_f * log2(p_l_f + epsilon);
+                        entropy_f -= p_l_f * log2(p_l_f);
                 }
             }
             entropy += p_f * entropy_f;
diff --git a/bayesclass/FeatureSelect.h b/bayesclass/FeatureSelect.h
index 78a22a1..8737065 100644
--- a/bayesclass/FeatureSelect.h
+++ b/bayesclass/FeatureSelect.h
@@ -5,7 +5,7 @@
 #include <string>
 using namespace std;
 namespace features {
-    typedef double precision_t;
+    typedef float precision_t;
     typedef int value_t;
     typedef vector<value_t> sample_t;
     typedef vector<sample_t> samples_t;