de::individual Class Reference

#include <individual.hpp>

List of all members.

Public Member Functions
	individual (size_t varCount)
	individual (const de::DVector &vars)
void	init (constraints_ptr constraints)
double	cost () const
void	ensureConstraints (constraints_ptr constraints, de::DVectorPtr origin)
de::DVectorPtr	vars () const
de::Double &	operator[] (size_t index)
const de::Double &	operator[] (size_t index) const
void	setCost (double cost)
bool	operator<= (const individual &ind) const
bool	operator< (const individual &ind) const
bool	better_or_equal (const individual_ptr ind, bool minimize) const
bool	better (const individual_ptr ind, bool minimize) const
size_t	size () const
std::string	to_string () const

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Detailed Description

An individual of a Differrential Evolution population

An individual has a set of variables and a cost associated with these variables

An individual is thread safe

Author:

adrian (12/1/2011)

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Constructor & Destructor Documentation

de::individual::individual

(

size_t

varCount

)

[inline]

constructs an individual

Author:

adrian (12/4/2011)

Parameters:

varCount

the number of variables for each individual

de::individual::individual

(

const de::DVector &

vars

)

[inline]

constructs an individual

Author:

adrian (12/4/2011)

Parameters:

vars	a vector of variables that will be copied into the internal vector of variables

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Member Function Documentation

bool de::individual::better	(	const individual_ptr	ind,
		bool	minimize
	)		const [inline]

compares the current individual with another individual based on cost. Returns true if the current cost is strictly better than the cost of the other individual, where better is either lower or higher depending on the minimize flag

Author:

adrian (12/4/2011)

Parameters:

ind	the individual to compare with
minimize	< if true, > if false

Returns:

bool

bool de::individual::better_or_equal	(	const individual_ptr	ind,
		bool	minimize
	)		const [inline]

compares the current individual with another individual based on cost. Returns true if the current cost is better or equal than the cost of the other individual, where better is either lower or higher depending on the minimize flag

Author:

adrian (12/4/2011)

Parameters:

ind	the individual to compare with
minimize	<= if true, >= if false

Returns:

bool

double de::individual::cost

(

)

const [inline]

returns the cost

Author:

adrian (12/4/2011)

Returns:

double

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void de::individual::ensureConstraints	(	constraints_ptr	constraints,
		de::DVectorPtr	origin
	)		[inline]

Sets the variables to new random values within the constraints, using origin and old value

Author:

adrian (12/4/2011)

Parameters:

constraints
origin

void de::individual::init

(

constraints_ptr

constraints

)

[inline]

Initialized the internal vector of variables with random values within the constraints

Author:

adrian (12/4/2011)

Parameters:

constraints

bool de::individual::operator<

(

const individual &

ind

)

const [inline]

compares the current individual with another individual based on cost. Returns true if the current cost is strictly lower than the cost of the other individual

Author:

adrian (12/4/2011)

Parameters:

ind	the individual to compare with

Returns:

bool

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bool de::individual::operator<=

(

const individual &

ind

)

const [inline]

compares the current individual with another individual based on cost. Returns true if the current cost is lower or equal to the cost of the other individual

Author:

adrian (12/4/2011)

Parameters:

ind	the individual to compare with

Returns:

bool

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de::Double& de::individual::operator[]

(

size_t

index

)

[inline]

returns a non constant reference to a variable value based on an index, which can be used as an lvalue.

Author:

adrian (12/4/2011)

Parameters:

index

the index of the variable whose reference to return

Returns:

de::Double&

const de::Double& de::individual::operator[]

(

size_t

index

)

const [inline]

returns a constant reference to a variable value based on an index, which can be used as an lvalue.

Author:

adrian (12/4/2011)

Parameters:

index

the index of the variable whose reference to return

Returns:

de::Double&

void de::individual::setCost

(

double

cost

)

[inline]

Sets the cost

Author:

adrian (12/4/2011)

Parameters:

cost

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size_t de::individual::size

(

)

const [inline]

returns the size of variables vector

Author:

adrian (12/4/2011)

Returns:

size_t

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std::string de::individual::to_string

(

)

const [inline]

returns a string representation of the internals of an individual (cost and list of variables)

Author:

adrian (12/4/2011)

Returns:

std::string

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de::DVectorPtr de::individual::vars

(

)

const [inline]

returns the internal variable vector

Author:

adrian (12/4/2011)

Returns:

de::DVectorPtr

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

• C:/dev/de/differentialevolution/individual.hpp