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/* Copyright (c) 2012 Massachusetts Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "model/TransitionInfo.h"
namespace DSENT
{
TransitionInfo::TransitionInfo()
: m_number_transitions_00_(0.25), m_number_transitions_01_(0.25),
m_number_transitions_11_(0.25), m_frequency_multiplier_(1.0)
{
update();
}
TransitionInfo::TransitionInfo(double number_transitions_00_, double number_transitions_01_,
double number_transitions_11_)
: m_number_transitions_00_(number_transitions_00_), m_number_transitions_01_(number_transitions_01_),
m_number_transitions_11_(number_transitions_11_)
{
m_frequency_multiplier_ = m_number_transitions_00_ + 2.0 * m_number_transitions_01_ + m_number_transitions_11_;
update();
}
TransitionInfo::~TransitionInfo()
{}
void TransitionInfo::update()
{
ASSERT(m_number_transitions_00_ >= 0.0, "[Error] Number of 0->0 transitions (" +
(String)m_number_transitions_00_ + ") must be >= 0.0!");
ASSERT(m_number_transitions_01_ >= 0.0, "[Error] Number of 0->1 transitions (" +
(String)m_number_transitions_01_ + ") must be >= 0.0!");
ASSERT(m_number_transitions_11_ >= 0.0, "[Error] Number of 1->1 transitions (" + (String)m_number_transitions_11_ + ") must be >= 0.0!");
m_probability_1_ = (m_number_transitions_01_ + m_number_transitions_11_) / m_frequency_multiplier_;
m_probability_0_ = 1.0 - m_probability_1_;
return;
}
TransitionInfo TransitionInfo::scaleFrequencyMultiplier(double frequency_multiplier_) const
{
// A short cut if frequency_multiplier_ == m_frequency_multiplier_ to avoid excess calculations
if(frequency_multiplier_ == m_frequency_multiplier_)
{
return TransitionInfo(m_number_transitions_00_, m_number_transitions_01_, m_number_transitions_11_);
}
else if (frequency_multiplier_ > m_frequency_multiplier_)
{
double freq_ratio = frequency_multiplier_ / m_frequency_multiplier_;
double diff_num_trans_01 = m_number_transitions_01_ * (freq_ratio - 1.0);
double norm_num_trans_00 = m_number_transitions_00_ * freq_ratio + diff_num_trans_01;
double norm_num_trans_01 = m_number_transitions_01_;
double norm_num_trans_11 = m_number_transitions_11_ * freq_ratio + diff_num_trans_01;
return TransitionInfo(norm_num_trans_00, norm_num_trans_01, norm_num_trans_11);
}
else
{
ASSERT(false, "[Error] Cannot scale to frequency multiplier (" + (String) frequency_multiplier_ +
") since current frequency multiplier (" + (String) m_frequency_multiplier_ + ") is bigger!");
}
}
void TransitionInfo::print(std::ostream& ost_) const
{
ost_ << "[" << m_number_transitions_00_ << ", " << m_number_transitions_01_ << ", " << m_number_transitions_11_ << "]";
ost_ << " [" << m_number_transitions_00_ / m_frequency_multiplier_;
ost_ << ", " << m_number_transitions_01_*2.0 / m_frequency_multiplier_;
ost_ << ", " << m_number_transitions_11_ / m_frequency_multiplier_ << "]" << endl;
return;
}
} // namespace DSENT
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