rl::LSInterpolator Class Reference

A least squares wire fitted Interpolator. More...

#include <LSInterpolator.h>

Inherits rl::Interpolator.

Public Member Functions
	LSInterpolator ()
	Initializes a LSInterpolator with default parameters. More...
	LSInterpolator (double smoothingFactor_, double e_)
	Initializes a LSInterpolator with custom parameters. More...
bool	initFromStream (std::ifstream *in)
	Initializes a LSInterpolator using the information from a file. More...
void	store (std::ofstream *out)
	Stores the interpolator object in a file. More...
double	getReward (const std::vector< Wire > &controlWires, const std::vector< double > &action)
	Uses the interpolator function to compute the reward of an action vector given a set of control wires. More...
double	rewardDerivative (const std::vector< double > &action, const Wire &wire, const std::vector< Wire > &controlWires)
	Computes the partial derivative of the interpolator function with respect to the reward of a control wire. More...
double	actionTermDerivative (double actionTerm, double wireActionTerm, const std::vector< double > &action, const Wire &wire, const std::vector< Wire > &controlWires)
	Computes the partial derivative of the interpolator function with respect to the value of one term of the action vector of a control wire. More...

Public Attributes
double	smoothingFactor
double	e

Additional Inherited Members
Static Public Member Functions inherited from rl::Interpolator
static Interpolator *	getAnyInterpolatorFromFile (std::ifstream *in)
	Gets an interpolator from a file. More...

Detailed Description

A least squares wire fitted Interpolator.

Constructor & Destructor Documentation

LSInterpolator::LSInterpolator

(

)

Initializes a LSInterpolator with default parameters.

PUBLIC METHODS.

The default smoothingFactor is 0, while the default e is 0.01.

LSInterpolator::LSInterpolator	(	double	smoothingFactor_,
		double	e_
	)

Initializes a LSInterpolator with custom parameters.

Parameters

smoothingFactor_	the smoothing factor for the interpolator
e_	a small constant (less than 1)

Member Function Documentation

double LSInterpolator::actionTermDerivative ( double  actionTerm, double  wireActionTerm, const std::vector< double > &  action, const Wire &  wire, const std::vector< Wire > &  controlWires  )

virtual

Computes the partial derivative of the interpolator function with respect to the value of one term of the action vector of a control wire.

Parameters

actionTerm	the action term
wireActionTerm	the wire action term
action	the action vector
wire	the wire
controlWires	the vector of control wires

Returns

the action term derivative

Implements rl::Interpolator.

double LSInterpolator::getReward ( const std::vector< Wire > &  controlWires, const std::vector< double > &  action  )

virtual

Uses the interpolator function to compute the reward of an action vector given a set of control wires.

Parameters

controlWires	the input vector of control wires
action	the action vector for which the reward is computed

Returns

the expected reward of the action vector

Implements rl::Interpolator.

bool LSInterpolator::initFromStream ( std::ifstream *  in )

virtual

Initializes a LSInterpolator using the information from a file.

Parameters

in	the file from which initialize the LSInterpolator

Returns

False if the interpolator stored in the file is not a LSInterpolator.

Implements rl::Interpolator.

double LSInterpolator::rewardDerivative ( const std::vector< double > &  action, const Wire &  wire, const std::vector< Wire > &  controlWires  )

virtual

Computes the partial derivative of the interpolator function with respect to the reward of a control wire.

Parameters

action	the action vector
wire	the wire
controlWires	the control wires

Returns

the reward derivative

Implements rl::Interpolator.

void LSInterpolator::store ( std::ofstream *  out )

virtual

Stores the interpolator object in a file.

Parameters

out	the file to which to write the LSInterpolator

Implements rl::Interpolator.

Member Data Documentation

double rl::LSInterpolator::e

double rl::LSInterpolator::smoothingFactor

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

• /home/truell20/Documents/Fido/Fido/include/LSInterpolator.h
• /home/truell20/Documents/Fido/Fido/src/LSInterpolator.cpp