Class: Sbn::StringCovariable

Inherits:
Variable show all
Defined in:
lib/sbn/string_variable.rb

Overview

:nodoc:

Constant Summary

Constants inherited from Variable

Variable::NEGLIGIBLE_PROBABILITY

Instance Attribute Summary collapse

Attributes inherited from Variable

#children, #name, #parents, #probability_table, #states

Instance Method Summary collapse

Methods inherited from Variable

#==, #===, #add_child, #add_child_no_recurse, #add_parent, #add_parent_no_recurse, #add_sample_point, #can_be_evaluated?, #eql?, #evaluate_marginal, #generate_probability_table, #get_random_state, #get_random_state_with_markov_blanket, #is_complete_evidence?, #set_probabilities, #set_probabilities_from_sample_points!, #set_probability, #set_states, #to_s, #to_xmlbif_definition

Constructor Details

#initialize(net, manager_name, text_to_match, probabilities) ⇒ StringCovariable

Returns a new instance of StringCovariable.



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# File 'lib/sbn/string_variable.rb', line 5

def initialize(net, manager_name, text_to_match, probabilities)
  @@covar_count ||= 0
  @@covar_count += 1
  @manager_name = manager_name
  @text_to_match = text_to_match.downcase
  super(net, "#{@manager_name}_covar_#{@@covar_count}", probabilities)
end

Instance Attribute Details

#text_to_match ⇒ Object (readonly)

Returns the value of attribute text_to_match.



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# File 'lib/sbn/string_variable.rb', line 3

def text_to_match
  @text_to_match
end

Instance Method Details

#evidence_name ⇒ Object

:nodoc:



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# File 'lib/sbn/string_variable.rb', line 20

def evidence_name # :nodoc:
  @manager_name
end

#get_observed_state(evidence) ⇒ Object

:nodoc:



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# File 'lib/sbn/string_variable.rb', line 24

def get_observed_state(evidence) # :nodoc:
  evidence[@manager_name].include?(@text_to_match) ? :true : :false
end

#set_in_evidence?(evidence) ⇒ Boolean

:nodoc:

Returns:

  • (Boolean) 


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# File 'lib/sbn/string_variable.rb', line 32

def set_in_evidence?(evidence) # :nodoc:
  evidence.has_key?(@manager_name)
end

#to_xmlbif_variable(xml) ⇒ Object 



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# File 'lib/sbn/string_variable.rb', line 13

def to_xmlbif_variable(xml)
  super(xml) do |x|
    x.property("ManagerVariableName = #{@manager_name.to_s}")
    x.property("TextToMatch = #{@text_to_match.inspect}")
  end
end

#transform_evidence_value(val) ⇒ Object

:nodoc:



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# File 'lib/sbn/string_variable.rb', line 28

def transform_evidence_value(val) # :nodoc:
  raise "Evidence should not be provided for string covariables"
end