Class: Tokenizer::Operation

Inherits:
Object
  • Object
show all
Defined in:
lib/rbbt/ner/rnorm/tokens.rb

Instance Method Summary collapse

Constructor Details

#initialize(comparison) ⇒ Operation

Returns a new instance of Operation.



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# File 'lib/rbbt/ner/rnorm/tokens.rb', line 24

def initialize(comparison)
  @comparison = comparison
  @ignore_case = Tokenizer::ignore_case
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &bloc) ⇒ Object 



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# File 'lib/rbbt/ner/rnorm/tokens.rb', line 34

def method_missing(name, *args, &bloc)
  @token = name.to_sym
  value = args.first
  @value = value
  self
end

Instance Method Details

#eval(list1, list2) ⇒ Object 



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# File 'lib/rbbt/ner/rnorm/tokens.rb', line 41

def eval(list1, list2)
  toks1 = list1.select{|p| p[1] == @token}.collect{|t| @ignore_case ? t[0].to_s.downcase : t[0].to_s}
  toks2 = list2.select{|p| p[1] == @token}.collect{|t| @ignore_case ? t[0].to_s.downcase : t[0].to_s}

  value = 0
  case @comparison.to_s
  when 'same'
    if toks1 == toks2 && toks1.any?
      value = @value
    end
  when 'diff'
    if toks1 != toks2
      value = @value
    end
  when 'common'
    if toks1.to_set.intersection(toks2.to_set).length > 0
      value = @value
    end
  when 'distinct'
    if toks1.to_set.intersection(toks2.to_set).length == 0
      value = @value
    end
  when 'miss'
    missing = (toks1 - toks2)
    if missing.length > 0
      value = @value * missing.length
    end
  when 'extr'
    extr = (toks2 - toks1)
    if extr.length > 0
      value = @value * extr.length
    end
  end

  return value
end

#ignore_case(ignore = true) ⇒ Object 



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# File 'lib/rbbt/ner/rnorm/tokens.rb', line 29

def ignore_case(ignore = true)
  @ignore_case = ignore
  self
end