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// C++11
#ifndef CNODE_H
#define CNODE_H
#include "../../common_lib/cminimax.h"
#include <math.h>
#include <vector>
#include <stack>
#include <stdlib.h>
#include <time.h>
#include <cmath>
#include <sys/timeb.h>
#include <time.h>
#include <map>
const int DEBUG_MODE = 0;
namespace tree
{
// sampled related core code
class CAction
{
public:
std::vector<float> value;
std::vector<size_t> hash;
int is_root_action;
CAction();
CAction(std::vector<float> value, int is_root_action);
~CAction();
std::vector<size_t> get_hash(void);
std::size_t get_combined_hash(void);
};
class CNode
{
public:
int visit_count, to_play, current_latent_state_index, batch_index, is_reset, action_space_size;
// sampled related core code
CAction best_action;
int num_of_sampled_actions;
float value_prefix, prior, value_sum;
float parent_value_prefix;
bool continuous_action_space;
std::vector<int> children_index;
std::map<size_t, CNode> children;
std::vector<CAction> legal_actions;
CNode();
// sampled related core code
CNode(float prior, std::vector<CAction> &legal_actions, int action_space_size, int num_of_sampled_actions, bool continuous_action_space);
~CNode();
void expand(int to_play, int current_latent_state_index, int batch_index, float value_prefix, const std::vector<float> &policy_logits);
void add_exploration_noise(float exploration_fraction, const std::vector<float> &noises);
float compute_mean_q(int isRoot, float parent_q, float discount_factor);
void print_out();
int expanded();
float value();
// sampled related core code
std::vector<std::vector<float> > get_trajectory();
std::vector<int> get_children_distribution();
CNode *get_child(CAction action);
};
class CRoots
{
public:
int root_num;
int num_of_sampled_actions;
int action_space_size;
std::vector<CNode> roots;
std::vector<std::vector<float> > legal_actions_list;
bool continuous_action_space;
CRoots();
CRoots(int root_num, std::vector<std::vector<float> > legal_actions_list, int action_space_size, int num_of_sampled_actions, bool continuous_action_space);
~CRoots();
void prepare(float root_noise_weight, const std::vector<std::vector<float> > &noises, const std::vector<float> &value_prefixs, const std::vector<std::vector<float> > &policies, std::vector<int> &to_play_batch);
void prepare_no_noise(const std::vector<float> &value_prefixs, const std::vector<std::vector<float> > &policies, std::vector<int> &to_play_batch);
void clear();
// sampled related core code
std::vector<std::vector<std::vector<float> > > get_trajectories();
std::vector<std::vector<std::vector<float> > > get_sampled_actions();
std::vector<std::vector<int> > get_distributions();
std::vector<float> get_values();
};
class CSearchResults
{
public:
int num;
std::vector<int> latent_state_index_in_search_path, latent_state_index_in_batch, search_lens;
std::vector<int> virtual_to_play_batchs;
std::vector<std::vector<float> > last_actions;
std::vector<CNode *> nodes;
std::vector<std::vector<CNode *> > search_paths;
CSearchResults();
CSearchResults(int num);
~CSearchResults();
};
//*********************************************************
void update_tree_q(CNode *root, tools::CMinMaxStats &min_max_stats, float discount_factor, int players);
void cbackpropagate(std::vector<CNode *> &search_path, tools::CMinMaxStats &min_max_stats, int to_play, float value, float discount_factor);
void cbatch_backpropagate(int current_latent_state_index, float discount_factor, const std::vector<float> &value_prefixs, const std::vector<float> &values, const std::vector<std::vector<float> > &policies, tools::CMinMaxStatsList *min_max_stats_lst, CSearchResults &results, std::vector<int> is_reset_list, std::vector<int> &to_play_batch);
CAction cselect_child(CNode *root, tools::CMinMaxStats &min_max_stats, int pb_c_base, float pb_c_init, float discount_factor, float mean_q, int players, bool continuous_action_space);
float cucb_score(CNode *parent, CNode *child, tools::CMinMaxStats &min_max_stats, float parent_mean_q, int is_reset, float total_children_visit_counts, float parent_value_prefix, float pb_c_base, float pb_c_init, float discount_factor, int players, bool continuous_action_space);
void cbatch_traverse(CRoots *roots, int pb_c_base, float pb_c_init, float discount_factor, tools::CMinMaxStatsList *min_max_stats_lst, CSearchResults &results, std::vector<int> &virtual_to_play_batch, bool continuous_action_space);
}
#endif |