class_docstr: Base class for error evaluators.
class_docstr_tok: ["Base","class","for","error","evaluators","."]
code: def evaluate(
      self,
      trials: list[FrozenTrial],
      study_direction: StudyDirection,
  ) -> float:
      pass
  
file_path: optuna/optuna/terminator/erroreval.py
imports: from __future__ import annotations
  import abc
  from typing import cast
  import numpy
  from optuna._experimental import experimental_class
  from optuna.study import StudyDirection
  from optuna.trial import FrozenTrial
  from optuna.trial import Trial
  from optuna.trial._state import TrialState
label_desc: Use image node_id 1 for calling the BaseErrorEvaluator obj's underlying member method code with example usage: obj.evaluate(trials, study_direction) without return types