gum::prm::gspan::FrequenceSearch< GUM_SCALAR > Class Template Reference

This is class is an implementation of a simple serach strategy for the gspan algorithm: it accept a growth if its frequency is above a user defined value. More...

#include <agrum/PRM/gspan/DFSTree.h>

Inheritance diagram for gum::prm::gspan::FrequenceSearch< GUM_SCALAR >:

Collaboration diagram for gum::prm::gspan::FrequenceSearch< GUM_SCALAR >:

Public Member Functions
Constructor and destructor.
	FrequenceSearch (Size freq)
	Default constructor. More...
	FrequenceSearch (const FrequenceSearch &from)
	Copy constructor. More...
virtual	~FrequenceSearch ()
	Destructor. More...
FrequenceSearch &	operator= (const FrequenceSearch &from)
	Copy operator. More...
Search methods.
virtual bool	accept_root (const Pattern *r)
virtual bool	accept_growth (const Pattern *parent, const Pattern *child, const EdgeGrowth< GUM_SCALAR > &growth)
virtual bool	operator() (LabelData *i, LabelData *j)
virtual bool	operator() (Pattern *i, Pattern *j)
Search methods.
void	setTree (DFSTree< GUM_SCALAR > *tree)

Protected Attributes
DFSTree< GUM_SCALAR > *	tree_

Protected Member Functions
double	computeCost_ (const Pattern &p)

Detailed Description

template<typename GUM_SCALAR>
class gum::prm::gspan::FrequenceSearch< GUM_SCALAR >

This is class is an implementation of a simple serach strategy for the gspan algorithm: it accept a growth if its frequency is above a user defined value.

Definition at line 125 of file searchStrategy.h.

Constructor & Destructor Documentation

FrequenceSearch() [1/2]

template<typename GUM_SCALAR >

INLINE gum::prm::gspan::FrequenceSearch< GUM_SCALAR >::FrequenceSearch ( Size  freq )

explicit

Default constructor.

Definition at line 227 of file searchStrategy_tpl.h.

References gum::prm::gspan::operator<<().

                                                                     :
          SearchStrategy< GUM_SCALAR >(), _freq_(freq) {
        GUM_CONSTRUCTOR(FrequenceSearch);
      }

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FrequenceSearch() [2/2]

template<typename GUM_SCALAR >

INLINE gum::prm::gspan::FrequenceSearch< GUM_SCALAR >::FrequenceSearch

(

const FrequenceSearch< GUM_SCALAR > &

from

)

Copy constructor.

Definition at line 234 of file searchStrategy_tpl.h.

References gum::prm::gspan::operator<<().

                                                                                                 :
          SearchStrategy< GUM_SCALAR >(from),
          _freq_(from._freq_) {
        GUM_CONS_CPY(FrequenceSearch);
      }

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~FrequenceSearch()

template<typename GUM_SCALAR >

INLINE gum::prm::gspan::FrequenceSearch< GUM_SCALAR >::~FrequenceSearch ( )

virtual

Destructor.

Definition at line 241 of file searchStrategy_tpl.h.

References gum::prm::gspan::operator<<().

                                                             {
        GUM_DESTRUCTOR(FrequenceSearch);
      }

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Member Function Documentation

accept_growth()

template<typename GUM_SCALAR >

INLINE bool gum::prm::gspan::FrequenceSearch< GUM_SCALAR >::accept_growth ( const Pattern *  parent, const Pattern *  child, const EdgeGrowth< GUM_SCALAR > &  growth  )

virtual

Implements gum::prm::gspan::SearchStrategy< GUM_SCALAR >.

Definition at line 259 of file searchStrategy_tpl.h.

References gum::prm::gspan::operator<<().

                                                                                             {
        return this->tree_->frequency(*child) >= _freq_;
      }

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accept_root()

template<typename GUM_SCALAR >

INLINE bool gum::prm::gspan::FrequenceSearch< GUM_SCALAR >::accept_root ( const Pattern *  r )

virtual

Implements gum::prm::gspan::SearchStrategy< GUM_SCALAR >.

Definition at line 253 of file searchStrategy_tpl.h.

References gum::prm::gspan::operator<<().

                                                                             {
        return this->tree_->frequency(*r) >= _freq_;
      }

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computeCost_()

template<typename GUM_SCALAR >

double gum::prm::gspan::SearchStrategy< GUM_SCALAR >::computeCost_ ( const Pattern &  p )

protectedinherited

Definition at line 35 of file searchStrategy_tpl.h.

References gum::prm::gspan::operator<<().

                                                                        {
        double                                        cost = 0;
        const Sequence< PRMInstance< GUM_SCALAR >* >& seq
           = *(this->tree_->data(p).iso_map.begin().val());
        Sequence< PRMClassElement< GUM_SCALAR >* > input_set;

        for (const auto inst: seq) {
          for (const auto input: inst->type().slotChains())
            for (const auto inst2: inst->getInstances(input->id()))
              if ((!seq.exists(inst2))
                  && (!input_set.exists(&(inst2->get(input->lastElt().safeName()))))) {
                cost += std::log(input->type().variable().domainSize());
                input_set.insert(&(inst2->get(input->lastElt().safeName())));
              }

          for (auto vec = inst->beginInvRef(); vec != inst->endInvRef(); ++vec)
            for (const auto inverse: *vec.val())
              if (!seq.exists(inverse.first)) {
                cost += std::log(inst->get(vec.key()).type().variable().domainSize());
                break;
              }
        }

        return cost;
      }

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operator()() [1/2]

template<typename GUM_SCALAR >

INLINE bool gum::prm::gspan::FrequenceSearch< GUM_SCALAR >::operator() ( LabelData *  i, LabelData *  j  )

virtual

Implements gum::prm::gspan::SearchStrategy< GUM_SCALAR >.

Definition at line 272 of file searchStrategy_tpl.h.

References gum::prm::gspan::operator<<().

                                                                                      {
        return (this->tree_->graph().size(i) > this->tree_->graph().size(j));
      }

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operator()() [2/2]

template<typename GUM_SCALAR >

INLINE bool gum::prm::gspan::FrequenceSearch< GUM_SCALAR >::operator() ( gspan::Pattern *  i, gspan::Pattern *  j  )

virtual

Implements gum::prm::gspan::SearchStrategy< GUM_SCALAR >.

Definition at line 266 of file searchStrategy_tpl.h.

References gum::prm::gspan::operator<<().

                                                                                            {
        // We want a descending order
        return this->tree_->frequency(*i) > this->tree_->frequency(*j);
      }

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operator=()

template<typename GUM_SCALAR >

INLINE FrequenceSearch< GUM_SCALAR > & gum::prm::gspan::FrequenceSearch< GUM_SCALAR >::operator=

(

const FrequenceSearch< GUM_SCALAR > &

from

)

Copy operator.

Definition at line 247 of file searchStrategy_tpl.h.

References gum::prm::gspan::operator<<().

                                                                                           {
        _freq_ = from._freq_;
        return *this;
      }

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setTree()

template<typename GUM_SCALAR >

INLINE void gum::prm::gspan::SearchStrategy< GUM_SCALAR >::setTree ( DFSTree< GUM_SCALAR > *  tree )

inherited

Definition at line 219 of file searchStrategy_tpl.h.

References gum::prm::gspan::operator<<().

                                                                                   {
        this->tree_ = tree;
      }

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Member Data Documentation

_freq_

template<typename GUM_SCALAR >

Size gum::prm::gspan::FrequenceSearch< GUM_SCALAR >::_freq_

private

Definition at line 161 of file searchStrategy.h.

tree_

template<typename GUM_SCALAR >

DFSTree< GUM_SCALAR >* gum::prm::gspan::SearchStrategy< GUM_SCALAR >::tree_

protectedinherited

Definition at line 111 of file searchStrategy.h.

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

• agrum/PRM/gspan/searchStrategy.h
• agrum/PRM/gspan/searchStrategy_tpl.h