domain_contraction.h

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// SPDX-License-Identifier: AGPL-3.0-only
// Copyright (C) 2026 Artificial Intelligence Techniques, S.L. and Roberto López González
 
#pragma once
 
#include "opennn/response_optimization/response_optimization.h"
 
namespace opennn
{
 
class DomainContraction : public ResponseOptimization
{
public:
 
    explicit DomainContraction(Network* = nullptr);
 
    void set_contraction_factor(float);
 
private:
 
    MatrixR single_optimization() override;
    MatrixR multi_optimization() override;
 
    pair<MatrixR, MatrixR> sample_local_domains(const vector<pair<VectorR, VectorR>>&, bool require_points = true);
 
    void contract_categories(pair<VectorR, VectorR>&, const vector<pair<Index, Index>>&, const VectorR&, Index) const;
 
    float contraction_factor = 0.85f;
};
 
}