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node.cpp
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node.cpp
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#include"node.h"
using namespace std;
double sigmoid(double x){
double mult = 4.9;
return (1/(1+(exp(-(x*mult))))); // this, or larger weight?
}
Node::Node(){
}
Node::Node(nodetype ntype, int hist_marking, int creation_gen): hist_marking(hist_marking), creation_gen(creation_gen){
node_type = ntype;
activated = false;
double firing = 0.;
}
Node::Node(const Node& node){
}
bool Node::activate(){
firing = 0.;
vector<Connection*>::iterator conPtr;
bool any_active_input_con = false;
bool any_active_input_node = false;
for(conPtr=in_connections.begin(); conPtr != in_connections.end(); ++conPtr){
if((*conPtr)->is_active){
any_active_input_con = true;
if(((*conPtr)->in_node->activated)){
any_active_input_node = true;
// return false;
}
}
}
if(!any_active_input_con){
// cout << "node not activated" <<endl;
return false;
}
for(conPtr=in_connections.begin(); conPtr != in_connections.end(); ++conPtr){
firing += (*conPtr)->in_node->firing * (*conPtr)->weight;
}
if(any_active_input_node){
firing = sigmoid(firing);
activated = true;
}
return true;
}
void Node::reset(){
activated = false;
firing = 0.;
}
bool Node::operator<(const Node& node){
return (hist_marking<node.hist_marking);
}
Node::~Node(){
}