Module: Phrasie::Rules

Included in:
Tagger
Defined in:
lib/phrasie/rules.rb

Instance Method Summary collapse

Instance Method Details

#correctDefaultNounTag(id, tagged_term, tagged_terms) ⇒ Object

Determine whether a default noun is plural or singular.



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# File 'lib/phrasie/rules.rb', line 4

def correctDefaultNounTag(id, tagged_term, tagged_terms)
  term, tag, norm = tagged_term
  if tag == 'NND'
    if term[-1] == 's'
      tagged_term[1] = 'NNS'
      tagged_term[2] = term[0..-2]
    else
      tagged_term[1] = 'NN'
    end
  end
  return [id, tagged_term, tagged_terms]
end

#determineVerbAfterModal(id, tagged_term, tagged_terms) ⇒ Object

Determine the verb after a modal verb to avoid accidental noun detection.



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# File 'lib/phrasie/rules.rb', line 32

def determineVerbAfterModal(id, tagged_term, tagged_terms)
  term, tag, norm = tagged_term
  return [id, tagged_term, tagged_terms] if tag != 'MD'
  len_terms = tagged_terms.size
  i = id
  i += 1
  while i < len_terms      
    if tagged_terms[i][1] == 'RB'
      i += 1
      next
    end
  
    if tagged_terms[i][1] == 'NN'
      tagged_terms[i][1] = 'VB'
    end
  
    break
  end
    
  return [id, tagged_term, tagged_terms]
end

#normalizePluralForms(id, tagged_term, tagged_terms) ⇒ Object 



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# File 'lib/phrasie/rules.rb', line 55

def normalizePluralForms(id, tagged_term, tagged_terms)
  term, tag, norm = tagged_term
  if ['NNS', 'NNPS'].include?(tag) && term == norm
    # Plural form ends in "s"
    singular = term[0..-2]
    if term[-1] && !self.tags_by_term[singular].nil?
      tagged_term[2] = singular
      return [id, tagged_term, tagged_terms]
    end
  
    # Plural form ends in "es"
    singular = term[0..-3]
    if term[-2..-1] && !self.tags_by_term[singular].nil?
      tagged_term[2] = singular
      return [id, tagged_term, tagged_terms]
    end
  
    # Plural form ends in "ies" (from "y")
    singular = term[0..-4]+'y'
    if term[-3..-1] && !self.tags_by_term[singular].nil?
      tagged_term[2] = singular
      return [id, tagged_term, tagged_terms]
    end
  end
  return [id, tagged_term, tagged_terms]
end

#verifyProperNounAtSentenceStart(id, tagged_term, tagged_terms) ⇒ Object

Verify that noun at sentence start is truly proper.



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# File 'lib/phrasie/rules.rb', line 18

def verifyProperNounAtSentenceStart(id, tagged_term, tagged_terms)
  term, tag, norm = tagged_term
  if ['NNP', 'NNPS'].include?(tag) && (id == 0 || tagged_terms[id-1][1] == '.')
    lower_term = term.downcase
    lower_tag = self.tags_by_term[lower_term]
    if ['NN', 'NNS'].include?(lower_tag)
      tagged_term[0] = tagged_term[2] = lower_term
      tagged_term[1] = lower_tag
    end
  end
  return [id, tagged_term, tagged_terms]
end