jubatus::core::classifier::perceptron Class Reference

#include <perceptron.hpp>

Inheritance diagram for jubatus::core::classifier::perceptron:

Collaboration diagram for jubatus::core::classifier::perceptron:

Public Member Functions
std::string	name () const
	perceptron (storage_ptr storage)
void	train (const common::sfv_t &sfv, const std::string &label)
Public Member Functions inherited from jubatus::core::classifier::linear_classifier
std::string	classify (const common::sfv_t &fv) const
void	classify_with_scores (const common::sfv_t &fv, classify_result &scores) const
void	clear ()
bool	delete_label (const std::string &label)
std::vector< std::string >	get_labels () const
framework::mixable *	get_mixable ()
virtual void	get_status (std::map< std::string, std::string > &status) const
jubatus::util::lang::shared_ptr< unlearner::unlearner_base >	label_unlearner () const
	linear_classifier (storage_ptr storage)
void	pack (framework::packer &pk) const
bool	set_label (const std::string &label)
void	set_label_unlearner (jubatus::util::lang::shared_ptr< unlearner::unlearner_base > label_unlearner)
bool	unlearn_label (const std::string &label)
void	unpack (msgpack::object o)
virtual	~linear_classifier ()
Public Member Functions inherited from jubatus::core::classifier::classifier_base
	classifier_base ()
virtual	~classifier_base ()

Additional Inherited Members
Protected Member Functions inherited from jubatus::core::classifier::linear_classifier
float	calc_margin (const common::sfv_t &sfv, const std::string &label, std::string &incorrect_label) const
float	calc_margin_and_variance (const common::sfv_t &sfv, const std::string &label, std::string &incorrect_label, float &variance) const
void	check_touchable (const std::string &label)
std::string	get_largest_incorrect_label (const common::sfv_t &sfv, const std::string &label, classify_result &scores) const
void	touch (const std::string &label)
void	update_weight (const common::sfv_t &sfv, float step_weigth, const std::string &pos_label, const std::string &neg_class)
Static Protected Member Functions inherited from jubatus::core::classifier::linear_classifier
static float	squared_norm (const common::sfv_t &sfv)
Protected Attributes inherited from jubatus::core::classifier::linear_classifier
framework::linear_function_mixer	mixable_storage_
storage_ptr	storage_
jubatus::util::lang::shared_ptr< unlearner::unlearner_base >	unlearner_

Detailed Description

Definition at line 28 of file perceptron.hpp.

Constructor & Destructor Documentation

jubatus::core::classifier::perceptron::perceptron ( storage_ptr  storage )

explicit

Definition at line 27 of file perceptron.cpp.

    : linear_classifier(storage) {
}

Member Function Documentation

string jubatus::core::classifier::perceptron::name ( ) const

virtual

Implements jubatus::core::classifier::linear_classifier.

Definition at line 42 of file perceptron.cpp.

                              {
  return string("perceptron");
}

void jubatus::core::classifier::perceptron::train ( const common::sfv_t &  sfv, const std::string &  label  )

virtual

Implements jubatus::core::classifier::linear_classifier.

Definition at line 31 of file perceptron.cpp.

References jubatus::core::classifier::linear_classifier::check_touchable(), jubatus::core::classifier::linear_classifier::classify(), jubatus::core::classifier::linear_classifier::touch(), and jubatus::core::classifier::linear_classifier::update_weight().

                                                                     {
  check_touchable(label);

  std::string predicted_label = classify(sfv);
  if (label == predicted_label) {
    return;
  }
  update_weight(sfv, 1.f, label, predicted_label);
  touch(label);
}

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

• jubatus/core/classifier/perceptron.hpp
• jubatus/core/classifier/perceptron.cpp