Class: FeatureSelection::ChiSquared

Inherits:
Base
  • Object
show all
Defined in:
lib/feature_selection/algorithms/chi_squared.rb

Instance Method Summary collapse

Methods inherited from Base

#classes, #initialize

Methods included from LogHelpers

#create_log, #log_calculations_complete, #write_to_log

Constructor Details

This class inherits a constructor from FeatureSelection::Base

Instance Method Details

#rank_features ⇒ Object 



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# File 'lib/feature_selection/algorithms/chi_squared.rb', line 8

def rank_features
  # Returns:
  #=> {:class => {'term' => score, 'term' => score}}
  @results = {}
  
  n = 1
  
  classes.each do |klass|
    @results[klass] = {}
    
    uniq_terms.each do |term|
      log_calculations_complete(n)
      n += 1
      
      answer = calculate_contribution(term, klass)
      @results[klass][term] = answer
    end #terms.each
  end #classes.each
  @results
end