Load the requested evaluation chain specified by a string.
evaluator : EvaluatorType The type of evaluator to load. llm : BaseLanguageModel, optional The language model to use for evaluation, by default None **kwargs : Any Additional keyword arguments to pass to the evaluator.
Chain The loaded evaluation chain.
from langchain_classic.evaluation import load_evaluator, EvaluatorType evaluator = load_evaluator(EvaluatorType.QA)
load_evaluator(
evaluator: EvaluatorType,
*,
llm: BaseLanguageModel | None = None,
**kwargs: Any = {}
) -> Chain | StringEvaluator