Optimist::Optimizer::ExponentialDecrease3< Scalar > Class Template Reference

Inertia weight functor, which decreases exponentially over time. More...

#include <ParticleSwarm.hh>

Public Member Functions
	ExponentialDecrease3 ()
	ExponentialDecrease3 (const Scalar min_weight, const Scalar max_weight, const Scalar d_1, const Scalar d_2)
Scalar	operator() (const Integer iteration, const Integer max_iterations) const

Private Attributes
Scalar	m_min_weight {0.4}
Scalar	m_max_weight {0.95}
Scalar	m_d_1 {0.2}
Scalar	m_d_2 {7.0}

Detailed Description

template<typename Scalar>
class Optimist::Optimizer::ExponentialDecrease3< Scalar >

Template Parameters

Scalar

Floating-point number type. The inertia weight is calculated by the following formula: \[ w = (w_{\max} - w_{\min} - d1) * \exp\left(\displaystyle\frac{1}{1 + d2 \frac{t}{t_{\max}}} \right) \text{.} \]

Constructor & Destructor Documentation

ExponentialDecrease3() [1/2]

template<typename Scalar>

Optimist::Optimizer::ExponentialDecrease3< Scalar >::ExponentialDecrease3 ( )

inline

Class constructor with minimum and maximum weights equal to 0.4 and 0.95, respectively, and control factors equal to 0.2 and 7.0.

ExponentialDecrease3() [2/2]

template<typename Scalar>

Optimist::Optimizer::ExponentialDecrease3< Scalar >::ExponentialDecrease3 ( const Scalar min_weight, const Scalar max_weight, const Scalar d_1, const Scalar d_2 )

inline

Class constructor that accepts the minimum and maximum weight of the exponential decrease and the two control factors.

Parameters

[in]	min_weight	Lower bound of the inertia weight
[in]	max_weight	Upper bound of the inertia weight
[in]	d_1	First control factor
[in]	d_2	Second control factor

Member Function Documentation

operator()()

template<typename Scalar>

Scalar Optimist::Optimizer::ExponentialDecrease3< Scalar >::operator() ( const Integer iteration, const Integer max_iterations ) const

inline

Get the inertia weight.

Parameters

[in]	iteration	Current iteration.
[in]	max_iterations	Maximum number of iterations.

Returns

The inertia weight.

Member Data Documentation

m_d_1

template<typename Scalar>

Scalar Optimist::Optimizer::ExponentialDecrease3< Scalar >::m_d_1 {0.2}

private

First control factor

m_d_2

template<typename Scalar>

Scalar Optimist::Optimizer::ExponentialDecrease3< Scalar >::m_d_2 {7.0}

private

Second control factor

m_max_weight

template<typename Scalar>

Scalar Optimist::Optimizer::ExponentialDecrease3< Scalar >::m_max_weight {0.95}

private

Maximum inertia weight

m_min_weight

template<typename Scalar>

Scalar Optimist::Optimizer::ExponentialDecrease3< Scalar >::m_min_weight {0.4}

private

Minimum inertia weight

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The documentation for this class was generated from the following file:

• core/include/Optimist/Optimizer/ParticleSwarm.hh