roboptim::CachedFunction< T > Class Template Reference

Store previous function computation. More...

#include <roboptim/core/filter/cached-function.hh>

List of all members.

Public Types
typedef T::traits_t	traits_t
	Import traits type.
typedef GenericDifferentiableFunction < traits_t >::interval_t	interval_t
	Import interval type.
typedef argument_t	cacheKey_t
	Key type for the cache.
typedef LRUCache< cacheKey_t, vector_t >	functionCache_t
typedef LRUCache< cacheKey_t, gradient_t >	gradientCache_t
typedef LRUCache< cacheKey_t, jacobian_t >	jacobianCache_t
typedef LRUCache< cacheKey_t, hessian_t >	hessianCache_t
Public Member Functions
	ROBOPTIM_TWICE_DIFFERENTIABLE_FUNCTION_FWD_TYPEDEFS_ (GenericTwiceDifferentiableFunction< traits_t >)
	CachedFunction (boost::shared_ptr< const T > fct, size_t size=10)
	Cache a RobOptim function.
	~CachedFunction ()
void	reset ()
	Reset the caches.
Protected Member Functions
virtual void	impl_compute (result_ref result, const_argument_ref argument) const
virtual void	impl_gradient (gradient_ref gradient, const_argument_ref argument, size_type functionId=0) const
virtual void	impl_jacobian (jacobian_ref jacobian, const_argument_ref arg) const
virtual void	impl_hessian (hessian_ref hessian, const_argument_ref argument, size_type functionId=0) const
virtual void	impl_derivative (gradient_ref derivative, value_type argument, size_type order=1) const
template<>
void	impl_gradient (gradient_ref, const_argument_ref, size_type) const
template<>
void	impl_gradient (gradient_ref, const_argument_ref, size_type) const
template<>
void	impl_jacobian (jacobian_ref, const_argument_ref) const
template<>
void	impl_jacobian (jacobian_ref, const_argument_ref) const
template<>
void	impl_hessian (hessian_ref, const_argument_ref, size_type) const
template<>
void	impl_hessian (hessian_ref, const_argument_ref, size_type) const
template<>
void	impl_hessian (hessian_ref, const_argument_ref, size_type) const
template<>
void	impl_hessian (hessian_ref, const_argument_ref, size_type) const
template<>
void	impl_derivative (gradient_ref, value_type, size_type) const
template<>
void	impl_derivative (gradient_ref, value_type, size_type) const
template<>
void	impl_derivative (gradient_ref, value_type, size_type) const
template<>
void	impl_derivative (gradient_ref, value_type, size_type) const
template<>
void	impl_derivative (gradient_ref, value_type, size_type) const
template<>
void	impl_derivative (gradient_ref, value_type, size_type) const
Protected Attributes
boost::shared_ptr< const T >	function_
std::vector< functionCache_t >	cache_
std::vector< gradientCache_t >	gradientCache_
jacobianCache_t	jacobianCache_
std::vector< hessianCache_t >	hessianCache_

---

Detailed Description

template<typename T>
class roboptim::CachedFunction< T >

Store previous function computation.

When an expensive function is called several times at the same point (exactly!), the cached function prevents useless computation by caching the function result.

This filter is experimental in this release.

Template Parameters:

T	input function type.

---

Member Typedef Documentation

template<typename T>

typedef argument_t roboptim::CachedFunction< T >::cacheKey_t

Key type for the cache.

template<typename T>

typedef LRUCache<cacheKey_t, vector_t> roboptim::CachedFunction< T >::functionCache_t

template<typename T>

typedef LRUCache<cacheKey_t, gradient_t> roboptim::CachedFunction< T >::gradientCache_t

template<typename T>

typedef LRUCache<cacheKey_t, hessian_t> roboptim::CachedFunction< T >::hessianCache_t

template<typename T>

typedef GenericDifferentiableFunction<traits_t>:: interval_t roboptim::CachedFunction< T >::interval_t

Import interval type.

template<typename T>

typedef LRUCache<cacheKey_t, jacobian_t> roboptim::CachedFunction< T >::jacobianCache_t

template<typename T>

typedef T::traits_t roboptim::CachedFunction< T >::traits_t

Import traits type.

---

Constructor & Destructor Documentation

template<typename T >

roboptim::CachedFunction< T >::CachedFunction	(	boost::shared_ptr< const T >	fct,
		size_t	size = 10
	)		[explicit]

Cache a RobOptim function.

Parameters:

fct	function to cache.
size	size of the LRU cache.

template<typename T >

roboptim::CachedFunction< T >::~CachedFunction

(

)

---

Member Function Documentation

template<typename T >

void roboptim::CachedFunction< T >::impl_compute	(	result_ref	result,
		const_argument_ref	argument
	)		const [protected, virtual]

References roboptim::LRUCache< K, V >::find().

template<typename T >

void roboptim::CachedFunction< T >::impl_derivative	(	gradient_ref	derivative,
		value_type	argument,
		size_type	order = 1
	)		const [protected, virtual]

References roboptim::derivative(), and roboptim::LRUCache< K, V >::find().

template<>

void roboptim::CachedFunction< Function >::impl_derivative	(	gradient_ref	,
		value_type	,
		size_type
	)		const [inline, protected]

template<>

void roboptim::CachedFunction< SparseFunction >::impl_derivative	(	gradient_ref	,
		value_type	,
		size_type
	)		const [inline, protected]

template<>

void roboptim::CachedFunction< DifferentiableFunction >::impl_derivative	(	gradient_ref	,
		value_type	,
		size_type
	)		const [inline, protected]

template<>

void roboptim::CachedFunction< DifferentiableSparseFunction >::impl_derivative	(	gradient_ref	,
		value_type	,
		size_type
	)		const [inline, protected]

template<>

void roboptim::CachedFunction< TwiceDifferentiableFunction >::impl_derivative	(	gradient_ref	,
		value_type	,
		size_type
	)		const [inline, protected]

template<>

void roboptim::CachedFunction< TwiceDifferentiableSparseFunction >::impl_derivative	(	gradient_ref	,
		value_type	,
		size_type
	)		const [inline, protected]

template<typename T >

void roboptim::CachedFunction< T >::impl_gradient	(	gradient_ref	gradient,
		const_argument_ref	argument,
		size_type	functionId = 0
	)		const [protected, virtual]

template<>

void roboptim::CachedFunction< Function >::impl_gradient	(	gradient_ref	,
		const_argument_ref	,
		size_type
	)		const [inline, protected]

template<>

void roboptim::CachedFunction< SparseFunction >::impl_gradient	(	gradient_ref	,
		const_argument_ref	,
		size_type
	)		const [inline, protected]

template<typename T >

void roboptim::CachedFunction< T >::impl_hessian	(	hessian_ref	hessian,
		const_argument_ref	argument,
		size_type	functionId = 0
	)		const [protected, virtual]

template<>

void roboptim::CachedFunction< Function >::impl_hessian	(	hessian_ref	,
		const_argument_ref	,
		size_type
	)		const [inline, protected]

template<>

void roboptim::CachedFunction< SparseFunction >::impl_hessian	(	hessian_ref	,
		const_argument_ref	,
		size_type
	)		const [inline, protected]

template<>

void roboptim::CachedFunction< DifferentiableFunction >::impl_hessian	(	hessian_ref	,
		const_argument_ref	,
		size_type
	)		const [inline, protected]

template<>

void roboptim::CachedFunction< DifferentiableSparseFunction >::impl_hessian	(	hessian_ref	,
		const_argument_ref	,
		size_type
	)		const [inline, protected]

template<typename T >

void roboptim::CachedFunction< T >::impl_jacobian	(	jacobian_ref	jacobian,
		const_argument_ref	arg
	)		const [protected, virtual]

References roboptim::LRUCache< K, V >::find().

template<>

void roboptim::CachedFunction< Function >::impl_jacobian	(	jacobian_ref	,
		const_argument_ref
	)		const [inline, protected]

template<>

void roboptim::CachedFunction< SparseFunction >::impl_jacobian	(	jacobian_ref	,
		const_argument_ref
	)		const [inline, protected]

template<typename T >

void roboptim::CachedFunction< T >::reset

(

)

Reset the caches.

template<typename T>

roboptim::CachedFunction< T >::ROBOPTIM_TWICE_DIFFERENTIABLE_FUNCTION_FWD_TYPEDEFS_

(

GenericTwiceDifferentiableFunction< traits_t >

)

---

Member Data Documentation

template<typename T>

std::vector<functionCache_t> roboptim::CachedFunction< T >::cache_ [mutable, protected]

template<typename T>

boost::shared_ptr<const T> roboptim::CachedFunction< T >::function_ [protected]

template<typename T>

std::vector<gradientCache_t> roboptim::CachedFunction< T >::gradientCache_ [mutable, protected]

template<typename T>

std::vector<hessianCache_t> roboptim::CachedFunction< T >::hessianCache_ [mutable, protected]

template<typename T>

jacobianCache_t roboptim::CachedFunction< T >::jacobianCache_ [mutable, protected]