80 lines
No EOL
2.1 KiB
C++
Executable file
80 lines
No EOL
2.1 KiB
C++
Executable file
#ifndef MYCLASSES_H
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#define MYCLASSES_H
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#include <forward_list>
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#include <list>
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#include <vector>
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enum Activ
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{
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RELU, TANH, SIGMOID, LINEAR, SOFTMAX
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};
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class Neuron
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{
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public:
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Neuron(int prev_layer_size); //prev_layer_size = number of weights
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void set_bias(float value);
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float get_bias();
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void set_nth_weight(int n, float value);
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float get_nth_weight(int n);
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float get_weighted_sum();
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void set_activated_output(float value);
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float get_activated_output();
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void set_derror(float value);
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float get_derror();
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void activate(std::forward_list<Neuron>::iterator &prev_layer_it, Activ activ_function=LINEAR);
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private:
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std::forward_list<float> weights;
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float bias;
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float weighted_sum;
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float activated_output;
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float derror;
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};
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class Network
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{
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public:
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Network(int n_layers, int n_neurons);
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Network(const std::vector<int> &n_neurons, Activ h_activ=RELU, Activ o_activ=SIGMOID);
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float predict(const std::vector<float> &input, bool as_raw=true);
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void print();
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//to be deleted
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bool forward(const std::vector<float> &input, const std::vector<float> &target);
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bool set_errors(const std::vector<float> &target);
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bool backward(float learning_rate);
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private:
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std::list<std::forward_list<Neuron>> layers;
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Activ h_activ;
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Activ o_activ;
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//bool forward(const std::vector<float> &input, const std::vector<float> &target);
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//bool set_errors(const std::vector<float> &target);
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//bool backward(float learning_rate);
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};
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class Tools
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{
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public:
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static void activate_randomness();
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static float get_random(float mini, float maxi);
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//Activation functions and their derivatives
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static float activation_function(Activ activ, float value);
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static float activation_function_derivative(Activ activ, float value);
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//float activation_function(Activ activ, float value);
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//float activation_function_derivative(Activ activ, float value);
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private:
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float relu(float value);
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float sigmoid(float value);
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float relu_derivative(float value);
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float sigmoid_derivative(float value);
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float tanh_derivative(float value);
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};
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#endif |