ackley_function.hpp

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#pragma once

#include "pass_bits/problem.hpp"

namespace pass
{
//           ⎛        ⎛ D      ⎞⎞       ⎛ D               ⎞
//           ⎜        ⎜ ∑ p(i)²⎟⎟       ⎜ ∑ cos(2π * p(i))⎟
// -20 * exp ⎜-0.2 * √⎜i=1     ⎟⎟ - exp ⎜i=1              ⎟ + 20 + exp(1)
//           ⎜        ⎜--------⎟⎟       ⎜-----------------⎟
//           ⎝        ⎝   D    ⎠⎠       ⎝        D        ⎠
//
//
class ackley_function : public problem
{
public:
  explicit ackley_function(const arma::uword dimension);

  double evaluate(const arma::vec &agent) const override;
};
} // namespace pass