Class: PROIEL::Converter::Tiger

Inherits:
Object
  • Object
show all
Defined in:
lib/proiel/cli/converters/tiger.rb

Overview

Converter for the TigerXML format (www.ims.uni-stuttgart.de/projekte/TIGER/TIGERSearch/doc/html/TigerXML.html) in the variant used by VISL under the name ‘TIGER dependency format’ (beta.visl.sdu.dk/treebanks.html#TIGER_dependency_format).

Constant Summary collapse

SCHEMA_FILE = 
File.join('tigerxml', 'TigerXML.xsd')
MORPHOLOGICAL_FEATURES = 
%i(person_number tense_mood_voice case_number gender degree strength inflection)
OTHER_FEATURES = 
%i(lemma pos information_status antecedent_id word)

Class Method Summary collapse

Class Method Details

.declare_annotation(builder, features, annotation_schema) ⇒ Object 



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# File 'lib/proiel/cli/converters/tiger.rb', line 48

def declare_annotation(builder, features, annotation_schema)
  builder.annotation do
    features.each do |name, domain|
      # FIXME: we may want to list possible values for some of these
      builder.feature(name: name, domain: domain)
    end

    builder.edgelabel do
      builder.value(name: '--')

      annotation_schema.primary_relations.each do |tag, features|
        builder.value({ name: tag }, features.summary)
      end
    end

    builder.secedgelabel do
      annotation_schema.secondary_relations.each do |tag, features|
        builder.value({name: tag }, features.summary)
      end
    end
  end
end

.process(tb, _) ⇒ Object 



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# File 'lib/proiel/cli/converters/tiger.rb', line 13

def process(tb, _)
  selected_features = MORPHOLOGICAL_FEATURES + OTHER_FEATURES
  @features = selected_features.map { |f| [f, 'FREC'] }.to_h

  builder = Builder::XmlMarkup.new(target: STDOUT, indent: 2)
  builder.instruct! :xml, version: '1.0', encoding: 'UTF-8'

  tb.sources.each do |source|
    @hack = tb.annotation_schema
    write_source(builder, source) do
      source.divs.each do |div|
        div.sentences.each do |sentence|
          write_sentence(builder, sentence)
        end
      end
    end
  end
end

.token_attrs(t, type) ⇒ Object 



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# File 'lib/proiel/cli/converters/tiger.rb', line 71

def token_attrs(t, type)
  attrs = {}

  @features.each do |name, domain|
    if domain == 'FREC' or domain == type
      case name
      when :word, :cat
        attrs[name] = t.pro? ? "PRO-#{t.relation.upcase}" : t.form
      when *@semantic_features
        attrs[name] = t.sem_tags_to_hash[attr]
      when :lemma
        attrs[name] = t.lemma
      when :pos
        if t.empty_token_sort
          attrs[name] = t.empty_token_sort + '-'
        else
          attrs[name] = t.pos
        end
      when *MORPHOLOGICAL_FEATURES
        attrs[name] = name.to_s.split('_').map { |a| t.morphology_hash[a.to_sym] || '-' }.join
      else
        if t.respond_to?(name)
          attrs[name] = t.send(name)
        else
          raise "Do not know how to get required attribute #{name}"
        end
      end
      attrs[name] ||= '--'
    end
  end

  attrs
end

.write_nonterminals(builder, s) ⇒ Object 



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# File 'lib/proiel/cli/converters/tiger.rb', line 113

def write_nonterminals(builder, s)
  builder.nonterminals do
    # Add an empty root node
    h = @features.select { |_, domain| ['FREC', 'NT'].include?(domain) }.map { |name, _| [name, '--'] }.to_h
    h[:id] = "s#{s.id}_root"

    builder.nt(h) do
      s.tokens.reject { |t| t.head or t.pro? }.each do |t|
        builder.edge(idref: "p#{t.id}", label: t.relation)
      end
    end

    # Add other NTs
    s.tokens.each do |t|
      builder.nt(token_attrs(t, 'NT').merge(id: "p#{t.id}")) do
        # Add an edge to the correspoding terminal node
        builder.edge(idref: "w#{t.id}", label: '--')

        # Add primary dependency edges
        t.children.each { |d| builder.edge(idref: "p#{d.id}", label: d.relation) }

        # Add secondary dependency edges
        t.slashes.each do |relation, target_id|
          builder.secedge(idref: "p#{target_id}", label: relation)
        end
      end
    end
  end
end

.write_sentence(builder, s) ⇒ Object 



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# File 'lib/proiel/cli/converters/tiger.rb', line 143

def write_sentence(builder, s)
  builder.s(id: "s#{s.id}") do
    builder.graph(root: "s#{s.id}_root") do
      write_terminals(builder, s)
      write_nonterminals(builder, s)
    end
  end
end

.write_source(builder, s) ⇒ Object 



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# File 'lib/proiel/cli/converters/tiger.rb', line 32

def write_source(builder, s)
  builder.corpus(id: s.id) do
    builder.head do
      builder.meta do
        builder.name(s.title)
      end

      declare_annotation(builder, @features, @hack)
    end

    builder.body do
      yield
    end
  end
end

.write_terminals(builder, s) ⇒ Object 



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# File 'lib/proiel/cli/converters/tiger.rb', line 105

def write_terminals(builder, s)
  builder.terminals do
    s.tokens.each do |t|
      builder.t(token_attrs(t, 'T').merge({ id: "w#{t.id}"}))
    end
  end
end