highprecisionpso::OrientationChangeUpdater Class Reference

The orientation change updater implements an update procedure, which changes orientation if some directions have little relative movement. More...

#include <orientation_change_updater.h>

Inheritance diagram for highprecisionpso::OrientationChangeUpdater:

Public Member Functions
	OrientationChangeUpdater (double log2_limit)
	The constructor. More...
std::string	GetName ()
	Returns a string representation of this object. More...
void	LoadData (std::ifstream *input_stream, ProgramVersion *version_of_stored_data)
	Loads data to reset the state of the position and velocity updater to the state which was stored. More...
void	StoreData (std::ofstream *output_stream)
	Stores the current state of this position and velocity updater such that it can completely restore the current state with this data. More...
void	Update (Particle *p)
	Processes a single movement of the specified particle. More...
Public Member Functions inherited from highprecisionpso::PositionAndVelocityUpdater
virtual	~PositionAndVelocityUpdater ()

Detailed Description

The orientation change updater implements an update procedure, which changes orientation if some directions have little relative movement.

See update function for detailed information about the update process.

Constructor & Destructor Documentation

highprecisionpso::OrientationChangeUpdater::OrientationChangeUpdater

(

double

log2_limit

)

The constructor.

Parameters

log2_limit

The allowed logarithmic range for the scale of movement in different directions.

Member Function Documentation

std::string highprecisionpso::OrientationChangeUpdater::GetName ( )

virtual

Returns a string representation of this object.

Returns

The name of the object.

Implements highprecisionpso::PositionAndVelocityUpdater.

void highprecisionpso::OrientationChangeUpdater::LoadData ( std::ifstream *  input_stream, ProgramVersion *  version_of_stored_data  )

virtual

Loads data to reset the state of the position and velocity updater to the state which was stored.

Parameters

input_stream	The stream which contains the data about the state of the position and velocity updater.
version_of_stored_data	The version of the program when the backup was created.

Reimplemented from highprecisionpso::PositionAndVelocityUpdater.

void highprecisionpso::OrientationChangeUpdater::StoreData ( std::ofstream *  output_stream )

virtual

Stores the current state of this position and velocity updater such that it can completely restore the current state with this data.

Parameters

output_stream

The output stream where the state should be stored.

Reimplemented from highprecisionpso::PositionAndVelocityUpdater.

void highprecisionpso::OrientationChangeUpdater::Update ( Particle *  p )

virtual

Processes a single movement of the specified particle.

Random values of the standard movement equations are calculated in an orthogonal transformed space. In the orthogonal transformed space the scale of movement in each dimension is calculated. First we sum up the absolute value of the velocity, the distance to the local attractor and the distance to the global attractor. The scale of movement is then the logarithm of this sum. If in the current orientation the minimal and maximal value of the scale of movement differ more than log2limit then the lowest and largest directions are rotated with a hadamard transformation. Beside that change the default behavior is used.

Parameters

p	The particle, which should be updated.

Implements highprecisionpso::PositionAndVelocityUpdater.

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

• src/position_and_velocity_updater/orientation_change_updater.h