Class: Predicate

Inherits:
Object
  • Object
show all
Defined in:
lib/predicate.rb

Instance Method Summary collapse

Constructor Details

#initialize(pred_xml) ⇒ Predicate

Returns a new instance of Predicate.



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# File 'lib/predicate.rb', line 6

def initialize(pred_xml)
  attributes = pred_xml.attributes
  @pred = NumericalPredicate.new(attributes) if attributes['operator']
  @pred = CategoricalPredicate.new(pred_xml) if attributes['booleanOperator']
end

Instance Method Details

#field ⇒ Object 



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# File 'lib/predicate.rb', line 12

def field
  @pred.field
end

#missing_feature?(features) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/predicate.rb', line 22

def missing_feature?(features)
  return false if features.has_key? field
  RandomForester.logger.error "Missing feature #{field}"
  true
end

#nil_feature?(features) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/predicate.rb', line 28

def nil_feature?(features)
  return false unless features[field].nil?
  RandomForester.logger.error "Feature #{field} value is nil"
  true
end

#true?(features) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/predicate.rb', line 16

def true?(features)
  return if missing_feature?(features)
  return if nil_feature?(features)
  @pred.true?(features)
end