TransitionInfo.cc revision 10447:a465576671d4 
1#include "model/TransitionInfo.h"
2
3namespace DSENT
4{
5    TransitionInfo::TransitionInfo()
6        : m_number_transitions_00_(0.25), m_number_transitions_01_(0.25),
7        m_number_transitions_11_(0.25), m_frequency_multiplier_(1.0)
8    {
9        update();
10    }
11
12    TransitionInfo::TransitionInfo(double number_transitions_00_, double number_transitions_01_,
13            double number_transitions_11_)
14        : m_number_transitions_00_(number_transitions_00_), m_number_transitions_01_(number_transitions_01_),
15        m_number_transitions_11_(number_transitions_11_)
16    {
17        m_frequency_multiplier_ = m_number_transitions_00_ + 2.0 * m_number_transitions_01_ + m_number_transitions_11_;
18        update();
19    }
20
21    TransitionInfo::~TransitionInfo()
22    {}
23
24    void TransitionInfo::update()
25    {
26        ASSERT(m_number_transitions_00_ >= 0.0, "[Error] Number of 0->0 transitions (" +
27                (String)m_number_transitions_00_ + ") must be >= 0.0!");
28        ASSERT(m_number_transitions_01_ >= 0.0, "[Error] Number of 0->1 transitions (" +
29                (String)m_number_transitions_01_ + ") must be >= 0.0!");
30        ASSERT(m_number_transitions_11_ >= 0.0, "[Error] Number of 1->1 transitions (" + (String)m_number_transitions_11_ + ") must be >= 0.0!");
31
32        m_probability_1_ = (m_number_transitions_01_ + m_number_transitions_11_) / m_frequency_multiplier_;
33        m_probability_0_ = 1.0 - m_probability_1_;
34        return;
35    }
36
37    TransitionInfo TransitionInfo::scaleFrequencyMultiplier(double frequency_multiplier_) const
38    {
39        // A short cut if frequency_multiplier_ == m_frequency_multiplier_ to avoid excess calculations
40        if(frequency_multiplier_ == m_frequency_multiplier_)
41        {
42            return TransitionInfo(m_number_transitions_00_, m_number_transitions_01_, m_number_transitions_11_);
43        }
44        else if (frequency_multiplier_ > m_frequency_multiplier_)
45        {
46            double freq_ratio = frequency_multiplier_ / m_frequency_multiplier_;
47            double diff_num_trans_01 = m_number_transitions_01_ * (freq_ratio - 1.0);
48            double norm_num_trans_00 = m_number_transitions_00_ * freq_ratio + diff_num_trans_01;
49            double norm_num_trans_01 = m_number_transitions_01_;
50            double norm_num_trans_11 = m_number_transitions_11_ * freq_ratio + diff_num_trans_01;
51
52            return TransitionInfo(norm_num_trans_00, norm_num_trans_01, norm_num_trans_11);
53        }
54        else
55        {
56            ASSERT(false, "[Error] Cannot scale to frequency multiplier (" + (String) frequency_multiplier_ +
57                ") since current frequency multiplier (" + (String) m_frequency_multiplier_ + ") is bigger!");
58        }
59    }
60
61    void TransitionInfo::print(std::ostream& ost_) const
62    {
63        ost_ << "[" << m_number_transitions_00_ << ", " << m_number_transitions_01_ << ", " << m_number_transitions_11_ << "]";
64        ost_ << " [" << m_number_transitions_00_ / m_frequency_multiplier_;
65        ost_ << ", " << m_number_transitions_01_*2.0 / m_frequency_multiplier_;
66        ost_ << ", " << m_number_transitions_11_ / m_frequency_multiplier_ << "]" << endl;
67        return;
68    }
69} // namespace DSENT
70
71