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variables.h
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variables.h
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#ifndef _VARIABLES_H_
#define _VARIABLES_H_
#include <iostream>
#include <cstdarg>
#include <random>
#include <string>
std::random_device rd;
std::mt19937 gen(rd());
float random_(int min, int max) {
std::uniform_real_distribution<> d(min, max);
return d(gen);
}
class Chain {
protected:
std::vector<double> x;
double mu;
double std;
double mu_var;
public:
Chain() {
}
void stats() {
double sum = std::accumulate(x.begin(), x.end(), 0.0);
mu = sum / x.size();
double sq_sum = std::inner_product(x.begin(), x.end(), x.begin(), 0.0);
std = std::sqrt(sq_sum / x.size() - mu*mu);
sum = 0;
std::vector<double> mu_s;
int b = x.size()*0.75;
for (int i = 0; i < 10; i++) {
sum = std::accumulate(x.begin(), x.begin()+b, 0.0);
mu_s.push_back(sum / b);
}
sum = 0;
for (int i = 0; i < mu_s.size(); i++) {
sum += ((mu_s[i]-mu)*(mu_s[i]-mu));
}
mu_var = sum/mu_s.size();
}
double mean() {
return mu;
}
double stdev() {
return std;
}
double mean_variance() {
return mu_var;
}
void insert(double n) {
x.push_back(n);
}
void initialize(double value) {
x.clear();
insert(value);
}
double last() {
return x.back();
}
int size() {
return x.size();
}
std::vector<double> chain() {
return x;
}
void burn(int n) {
x.erase(x.begin(), x.begin()+n);
}
};
class Normal : public Chain {
int observed;
std::normal_distribution<> dist;
public:
Normal() {
observed = 0;
}
void initialize() {
//x.clear();
//insert(dist.mean());
}
void set_params(double mean, double sigma) {
std::normal_distribution<> dist(mean, sigma);
x.push_back(mean);
}
double sample() {
return dist(gen);
}
};
class Bernoulli : public Chain {
int observed;
std::bernoulli_distribution dist;
public:
Bernoulli() {
observed = 0;
}
void initialize() {
}
void set_params(double mean) {
std::bernoulli_distribution dist(mean);
x.push_back(mean);
}
double sample() {
return dist(gen);
}
};
// -1 = Not Assigned
class Observation {
int s_id, q_id, correct;
public:
void set(int _s_id, int _q_id, int _correct) {
s_id = _s_id;
q_id = _q_id;
correct = _correct;
}
Observation() {
}
int get_sid() {
return s_id;
}
int get_qid() {
return q_id;
}
int get_response() {
return correct;
}
};
#endif