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Added create_gaussian_noise static helper method to Matrix.

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Relintai 2023-04-30 16:28:40 +02:00
parent da321e3c57
commit 6558d0d2f6
2 changed files with 21 additions and 0 deletions
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19
mlpp/lin_alg/mlpp_matrix.cpp
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@ -605,6 +605,25 @@ void MLPPMatrix::gaussian_noise_fill() {
} }
} }
Ref<MLPPMatrix> MLPPMatrix::create_gaussian_noise(int n, int m) {
std::random_device rd;
std::default_random_engine generator(rd());
std::normal_distribution<real_t> distribution(0, 1); // Standard normal distribution. Mean of 0, std of 1.
Ref<MLPPMatrix> A;
A.instance();
A->resize(Size2i(m, n));
int a_data_size = A->data_size();
real_t *a_ptr = A->ptrw();
for (int i = 0; i < a_data_size; ++i) {
a_ptr[i] = distribution(generator);
}
return A;
}
void MLPPMatrix::add(const Ref<MLPPMatrix> &B) { void MLPPMatrix::add(const Ref<MLPPMatrix> &B) {
ERR_FAIL_COND(!B.is_valid()); ERR_FAIL_COND(!B.is_valid());
ERR_FAIL_COND(_size != B->size()); ERR_FAIL_COND(_size != B->size());

2
mlpp/lin_alg/mlpp_matrix.h
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@ -128,6 +128,8 @@ public:
Ref<MLPPMatrix> gaussian_noise(int n, int m) const; Ref<MLPPMatrix> gaussian_noise(int n, int m) const;
void gaussian_noise_fill(); void gaussian_noise_fill();
static Ref<MLPPMatrix> create_gaussian_noise(int n, int m);
void add(const Ref<MLPPMatrix> &B); void add(const Ref<MLPPMatrix> &B);
Ref<MLPPMatrix> addn(const Ref<MLPPMatrix> &B) const; Ref<MLPPMatrix> addn(const Ref<MLPPMatrix> &B) const;
void addb(const Ref<MLPPMatrix> &A, const Ref<MLPPMatrix> &B); void addb(const Ref<MLPPMatrix> &A, const Ref<MLPPMatrix> &B);