class_docstr: Evaluator for random generation task. Metric is validity ratio, uniqueness ratio, and novelty ratio (all represented in percentage).
code: def __init__(self):
      pass
  
file_path: DIG/dig/ggraph/evaluation/metric.py
imports: from rdkit import Chem
  import numpy
  from dig.ggraph.utils import check_chemical_validity, qed, calculate_min_plogp, reward_target_molecule_similarity
label_desc: Use image node_id 1 to create a new RandGenEvaluator object  with example: obj = RandGenEvaluator()