root/library/tests/additive_generator.h @ 538

/*!
  \file
  \brief Generating stress test agenda from random data.
  \author Vaclav Barta.

  -----------------------------------
  BDM++ - C++ library for Bayesian Decision Making under Uncertainty

  Using IT++ for numerical operations
  -----------------------------------
*/

#ifndef ADDITIVE_GENERATOR_H
#define ADDITIVE_GENERATOR_H

#include "itpp_ext.h"
#include "generator.h"

/*! Iteratively adds squared random vector to a random matrix.
 */
class additive_generator : public generator {
private:
        itpp::mat a;
        itpp::mat v2;
        double lambda;

public:
        additive_generator() : lambda ( 0.5 ) { }

        itpp::mat next();

        //! Load from structure with elements:
        //!  \code
        //! { size = 7; // size (rows == cols) of the generated matrix
        //!   lambda = 0.5; // weight of the added vector
        //! }
        //! \endcode
        //! size is mandatory, lambda optional (with default as shown).
        void from_setting ( const Setting &set );
};

#endif