class_docstr: Dataset scheduling for multiple problems.
class_docstr_tok: ["Dataset","scheduling","for","multiple","problems","."]
docstr: Only run validation on examples from the first problem.
docstr_tok: ["Only","run","validation","on","examples","from","the","first","problem","."]
code: def only_eval_first_problem(self):
      """Only run validation on examples from the first problem."""
      return False
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import functools
  import os
  import numpy
  from tensor2tensor.data_generators import problem
  from tensor2tensor.data_generators import text_problems
  import tensorflow.compat.v1
label_desc: Use image node_id 4 for calling the MultiProblemV2 obj's underlying member method code with example usage: obj.only_eval_first_problem() and returns: False