From 7b87897f19a18063b734f2eeda7259083f271032 Mon Sep 17 00:00:00 2001
From: Tiago Freitas Pereira <tiagofrepereira@gmail.com>
Date: Wed, 11 Jan 2017 09:30:32 +0100
Subject: [PATCH] Updated the default variance flooring in the Gaussian class
---
bob/learn/em/cpp/GMMBaseTrainer.cpp | 1 -
bob/learn/em/cpp/Gaussian.cpp | 2 +-
2 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/bob/learn/em/cpp/GMMBaseTrainer.cpp b/bob/learn/em/cpp/GMMBaseTrainer.cpp
index fac247b..a48a520 100644
--- a/bob/learn/em/cpp/GMMBaseTrainer.cpp
+++ b/bob/learn/em/cpp/GMMBaseTrainer.cpp
@@ -31,7 +31,6 @@ void bob::learn::em::GMMBaseTrainer::initialize(bob::learn::em::GMMMachine& gmm)
{
// Allocate memory for the sufficient statistics and initialise
m_ss->resize(gmm.getNGaussians(),gmm.getNInputs());
- gmm.setVarianceThresholds(this->m_mean_var_update_responsibilities_threshold);
}
void bob::learn::em::GMMBaseTrainer::eStep(bob::learn::em::GMMMachine& gmm,
diff --git a/bob/learn/em/cpp/Gaussian.cpp b/bob/learn/em/cpp/Gaussian.cpp
index b8bdbbf..cd45f60 100644
--- a/bob/learn/em/cpp/Gaussian.cpp
+++ b/bob/learn/em/cpp/Gaussian.cpp
@@ -84,7 +84,7 @@ void bob::learn::em::Gaussian::resize(const size_t n_inputs) {
m_variance.resize(m_n_inputs);
m_variance = 1;
m_variance_thresholds.resize(m_n_inputs);
- m_variance_thresholds = 0;
+ m_variance_thresholds = std::numeric_limits<double>::epsilon();
// Re-compute g_norm, because m_n_inputs and m_variance
// have changed
--
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