class_docstr: Qa Evaluator. Now, we support metrics `'bleu'`
      
class_docstr_tok: ["Qa","Evaluator",".","Now",",","we","support","metrics","`","'bleu","'","`"]
code: def __init__(self, config):
      super(QaEvaluator, self).__init__(config)
      self.multiref_strategy = config["multiref_strategy"]
  
file_path: TextBox/textbox/evaluator/qa_evaluator.py
imports: import string
  import re
  import numpy
  from .abstract_evaluator import AbstractEvaluator
  from collections import Counter
label_desc: Use image node_id 1 to create a new QaEvaluator object from inherited base classes: AbstractEvaluator with example: obj = QaEvaluator(config)