Class: StanfordParser::StandoffParsedText

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

Overview

Standoff syntactic annotation of natural language text which may contain multiple sentences.

This is an Array of StandoffNode objects, one for each sentence in the text.

Instance Method Summary collapse

Constructor Details

#initialize(text, nodetype = StandoffNode, tokenizer = EN_PENN_TREEBANK_TOKENIZER, parser = DefaultParser.instance) ⇒ StandoffParsedText

Parse the text and create the standoff annotation.

The default parser is a singleton instance of the English language Stanford Natural Langugage parser. There may be a delay of a few seconds for it to load the first time it is created.



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# File 'lib/stanfordparser.rb', line 323

def initialize(text, nodetype = StandoffNode,
               tokenizer = EN_PENN_TREEBANK_TOKENIZER,
               parser = DefaultParser.instance)
  preprocessor = StandoffDocumentPreprocessor.new(tokenizer)
  # Segment the text into sentences.  Parse each sentence, writing
  # standoff annotation information into the terminal nodes.
  preprocessor.getSentencesFromString(text).map do |sentence|
    parse = parser.apply(sentence.to_s)
    push(nodetype.new(parse, sentence))
  end
end

Instance Method Details

#inspect ⇒ Object

Print class name and number of sentences.



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# File 'lib/stanfordparser.rb', line 336

def inspect
  "<#{self.class.name}, #{length} sentences>"
end

#to_s ⇒ Object

Print parses.



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# File 'lib/stanfordparser.rb', line 341

def to_s
  flatten.join(" ")
end