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#include "book.h"
#include "osl/record/kanjiPrint.h"
#include "osl/csa.h"
#ifndef MINIMAL_GPSSHELL
# include <gsl_cdf.h>
#endif
#include <boost/format.hpp>
#include <cmath>
#include <iostream>
int gpsshell::
Book::getStateIndex(const osl::SimpleState& state,
const std::vector<osl::Move>& moves) const
{
int state_index = the_book->stateIndex(moves);
if (state_index < 0)
state_index = the_book->stateIndex(state); // it could take a long time
return state_index;
}
void gpsshell::
Book::showState(const osl::SimpleState& state,
const std::vector<osl::Move>& moves,
int max_count) const
{
osl::record::KanjiPrint printer(std::cerr,
std::shared_ptr<osl::record::Characters>(
new osl::record::KIFCharacters())
);
const int state_index = getStateIndex(state, moves);
if (state_index < 0)
{
std::cout << "The current position not found in the book" << std::endl;
return;
}
const osl::Player turn = state.turn();
const int black_win = the_book->blackWinCount(state_index);
const int white_win = the_book->whiteWinCount(state_index);
const int trial = black_win + white_win;
const int nwins = (turn == osl::BLACK ? black_win : white_win);
double win_rate = 0.0;
double deviation = 0.0;
double cd = 0.0; // cumulative distribution
if (trial > 0)
{
win_rate = 1.0 * nwins / trial;
#ifndef MINIMAL_GPSSHELL
cd = gsl_cdf_binomial_P(nwins, 0.5, trial);
#else
cd = 0;
#endif
deviation = sqrt( win_rate * (1-win_rate) / trial);
}
std::cout << boost::format("State_index: % 7d\n") % state_index
<< boost::format("Black win: % 7d\n") % black_win
<< boost::format("White win: % 7d\n") % white_win
<< "Binomial:\n"
<< boost::format(" E(X) [win rate] : % 7.4f\n") % win_rate
<< boost::format(" D(X): % 7.4f\n") % deviation
<< boost::format(" cumulative: % 7.4f\n") % cd;
std::cout << "\n";
printer.print(state);
std::cout << "\n";
gpsshell::WMoveStatsContainer wstats = getWMoveStats(state, moves);
std::cout << boost::format("found %d moves\n") % wstats.size();
for (const gpsshell::WMoveStats& st: wstats)
{
if (--max_count < 0) break;
std::cout << boost::format("[% 6d] %s win:% 7d loss:% 7d rate:% 7.4f - % 7.4f = % 7.4f\n")
% st.getWmove().weight
% osl::csa::show(st.getWmove().move)
% st.nwins()
% st.nlosses()
% st.winRate()
% st.deviation()
% (st.winRate() - st.deviation());
}
}
gpsshell::WMoveContainer gpsshell::
Book::getMoves(const osl::SimpleState& state,
const std::vector<osl::Move>& moves) const
{
const gpsshell::WMoveStatsContainer wstats
= getWMoveStats(state, moves);
gpsshell::WMoveContainer wmoves;
if (wstats.empty())
return wmoves; // empty
for (const gpsshell::WMoveStats& ws: wstats)
{
wmoves.push_back(ws.getWmove());
}
return wmoves;
}
gpsshell::WMoveStatsContainer gpsshell::
Book::getWMoveStats(const osl::SimpleState& state,
const std::vector<osl::Move>& moves) const
{
const int state_index = getStateIndex(state, moves);
gpsshell::WMoveStatsContainer wstats;
if (state_index < 0)
return wstats; // empty
{
WMoveContainer wmoves = the_book->moves(state_index);
wstats.reserve(wmoves.size());
for (const auto& wmove: wmoves)
{
const int next_state_index = wmove.stateIndex();
const int black_win = the_book->blackWinCount(next_state_index);
const int white_win = the_book->whiteWinCount(next_state_index);
gpsshell::WMoveStats st(wmove, black_win, white_win);
wstats.push_back(st);
}
}
/*
* Sort:
* weight such as wegiht > 0
* #wins such as weight == 0
*/
std::sort(wstats.begin(), wstats.end(), gpsshell::WMoveStatsSortByWeight());
gpsshell::WMoveStatsContainer::iterator it = wstats.begin();
for (/* none */; it != wstats.end(); ++it)
{
if (it->getWmove().weight < 1)
break;
}
std::sort(it, wstats.end(), gpsshell::WMoveStatsSortByWins());
return wstats;
}
// ==============================================
// Utility functions
// ==============================================
int gpsshell::getMaxWeight(const gpsshell::WMoveContainer& moves)
{
int max_weight = 0;
for (const osl::book::WMove& wmove: moves) {
if (max_weight < wmove.weight) {
max_weight = wmove.weight;
}
}
return max_weight;
}
int gpsshell::getSumOfWeights(const gpsshell::WMoveContainer& moves)
{
int sum = 0;
for (const osl::book::WMove& wmove: moves) {
sum += wmove.weight;
}
return sum;
}
struct WeightLessThan
{
int criteria;
explicit WeightLessThan(const int criteria)
: criteria(criteria)
{}
bool operator()(const osl::book::WMove& wmove) const
{
return (wmove.weight < criteria ? true : false);
}
};
void gpsshell::deleteLessWeightedMoves(gpsshell::WMoveContainer& wmoves,
const int criteria)
{
wmoves.erase(std::remove_if(wmoves.begin(), wmoves.end(), WeightLessThan(criteria)),
wmoves.end());
}
// ;;; Local Variables:
// ;;; mode:c++
// ;;; c-basic-offset:2
// ;;; End:
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