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Introduce training mode switch to Dropout layer #229

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Introduce training mode switch to Dropout layer #229

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d3e8492
Introduce training mode switch to Dropout layer
aobolensk Nov 12, 2025
cf189c5
Adjust tests
aobolensk Nov 12, 2025
bc8b106
ix clang-format
aobolensk Nov 12, 2025
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5 changes: 4 additions & 1 deletion include/layers/DropOutLayer.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -8,10 +8,13 @@ namespace it_lab_ai {
class DropOutLayer : public Layer {
private:
double drop_rate_;
bool training_mode_;

public:
DropOutLayer(double drop_rate = 0.0) : Layer(kDropout) {
DropOutLayer(double drop_rate = 0.0, bool training_mode = false)
: Layer(kDropout) {
drop_rate_ = drop_rate;
training_mode_ = training_mode;
}
void run(const std::vector<Tensor>& input,
std::vector<Tensor>& output) override;
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6 changes: 6 additions & 0 deletions src/layers/DropOutLayer.cpp
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Expand Up @@ -11,6 +11,12 @@ void DropOutLayer::run(const std::vector<Tensor>& input,
if (input.size() != 1) {
throw std::runtime_error("DropOutLayer: Input tensors not 1");
}

// If not in training mode, just pass through the input
if (!training_mode_) {
output[0] = input[0];
return;
}
const double lower_bound = 0;
const double upper_bound = 100;
std::uniform_real_distribution<double> unif(lower_bound, upper_bound);
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8 changes: 4 additions & 4 deletions test/single_layer/test_dropoutlayer.cpp
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Expand Up @@ -17,7 +17,7 @@ TEST(DropOutLayer, IncompatibleInput) {
}

TEST(DropOutLayer, dropoutlayer_int) {
DropOutLayer layer(1);
DropOutLayer layer(1, true);
Shape sh({2, 2});
Tensor input = make_tensor<int>({1, -1, 2, -2}, sh);
Tensor output;
Expand Down Expand Up @@ -47,7 +47,7 @@ TEST(DropOutLayer, dropoutlayer_float) {
}

TEST(DropOutLayer, dropoutlayer_float_50proc) {
DropOutLayer layer(0.5);
DropOutLayer layer(0.5, true);
Shape sh({10, 10});
std::vector<float> a(100, static_cast<float>(0.01));
Tensor input = make_tensor<float>(a, sh);
Expand All @@ -60,7 +60,7 @@ TEST(DropOutLayer, dropoutlayer_float_50proc) {
}

TEST(DropOutLayer, dropoutlayer_float_30proc) {
DropOutLayer layer(0.3);
DropOutLayer layer(0.3, true);
Shape sh({10, 10});
std::vector<float> a(100, static_cast<float>(0.01));
Tensor input = make_tensor<float>(a, sh);
Expand All @@ -73,7 +73,7 @@ TEST(DropOutLayer, dropoutlayer_float_30proc) {
}

TEST(DropOutLayer, dropoutlayer_float_70proc) {
DropOutLayer layer(0.7);
DropOutLayer layer(0.7, true);
Shape sh({10, 10});
std::vector<float> a(100, static_cast<float>(0.01));
Tensor input = make_tensor<float>(a, sh);
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