source: branches/peters_vector/lib/classifier/ConsensusInputRanker.h @ 469

// $Id: ConsensusInputRanker.h 469 2005-12-19 14:58:29Z peter $

#ifndef _theplu_classifier_consensusinputranker_ 
#define _theplu_classifier_consensusinputranker_ 

#include <c++_tools/classifier/InputRanker.h>

namespace theplu {
  class statistics::Score;
namespace classifier {  

  class CrossSplitting;
  class DataView;
  class Target;

  ///
  /// Class for ranking rows in a data matrix versus a target vector
  /// in a cross validation manner. The rows are sorted with respect
  /// to median of their ranks.
  ///   
  class ConsensusInputRanker
  {
  
  public:
    ///
    /// Constructor taking \a data, \a target, Score object. The
    /// constructor creates ranklists in a \a k fold crossvalidation
    /// manner, and in total there is \a n times \a k ranklists.
    ///
    ConsensusInputRanker(const DataView& data, 
                         const Target& target, 
                         statistics::Score&, CrossSplitting&,
                         const size_t k = 3 );

    ///
    /// Constructor taking \a data, \a target, \a weight and Score object. The
    /// constructor creates ranklists in a \a k fold crossvalidation
    /// manner, and in total there is \a n times \a k ranklists.
    ///
    ConsensusInputRanker(const DataView& data, 
                         const Target& target, 
                         const DataView& weight, 
                         statistics::Score&, 
                         CrossSplitting&,
                         const size_t n = 1 );

    ///
    /// Highest ranked row is ranked as number zero @return index of
    /// row ranked as number \a i
    ///
    inline size_t id(const size_t i) const {return id_[i];}
    
    ///
    /// Highest ranked row is ranked as number zero @return rank for
    /// row \a i
    ///
    inline size_t rank(const size_t i) const {return rank_[i];}


  private:
    std::vector<size_t> id_;
    std::vector<InputRanker> input_rankers_;
    u_int nof_rankers_;
    std::vector<size_t> rank_;
  };

}} // of namespace classifier and namespace theplu

#endif