때로는 LangSmith에 결과를 업로드하지 않고 로컬에서 평가를 실행하는 것이 유용할 수 있습니다. 예를 들어, 프롬프트를 빠르게 반복하면서 몇 가지 예제로 간단히 테스트하고 싶거나, target 및 evaluator function이 올바르게 정의되었는지 검증하는 경우, 이러한 평가를 기록하고 싶지 않을 수 있습니다. LangSmith Python SDK를 사용하고 evaluate() / aevaluate()에 upload_results=False를 전달하여 이를 수행할 수 있습니다. 이렇게 하면 application과 evaluator가 항상 그렇듯이 정확히 실행되고 동일한 출력을 반환하지만, LangSmith에는 아무것도 기록되지 않습니다. 여기에는 실험 결과뿐만 아니라 application 및 evaluator trace도 포함됩니다.

​
예제

예제를 살펴보겠습니다: langsmith>=0.2.0 필요. 예제는 pandas도 사용합니다. 
from langsmith import Client

# 1. Create and/or select your dataset
ls_client = Client()
dataset = ls_client.clone_public_dataset(
    "https://smith.langchain.com/public/a63525f9-bdf2-4512-83e3-077dc9417f96/d"
)

# 2. Define an evaluator
def is_concise(outputs: dict, reference_outputs: dict) -> bool:
    return len(outputs["answer"]) < (3 * len(reference_outputs["answer"]))

# 3. Define the interface to your app
def chatbot(inputs: dict) -> dict:
    return {"answer": inputs["question"] + " is a good question. I don't know the answer."}

# 4. Run an evaluation
experiment = ls_client.evaluate(
    chatbot,
    data=dataset,
    evaluators=[is_concise],
    experiment_prefix="my-first-experiment",
    # 'upload_results' is the relevant arg.
    upload_results=False
)

# 5. Analyze results locally
results = list(experiment)

# Check if 'is_concise' returned False.
failed = [r for r in results if not r["evaluation_results"]["results"][0].score]

# Explore the failed inputs and outputs.
for r in failed:
    print(r["example"].inputs)
    print(r["run"].outputs)

# Explore the results as a Pandas DataFrame.
# Must have 'pandas' installed.
df = experiment.to_pandas()
df[["inputs.question", "outputs.answer", "reference.answer", "feedback.is_concise"]]

{'question': 'What is the largest mammal?'}
{'answer': "What is the largest mammal? is a good question. I don't know the answer."}
{'question': 'What do mammals and birds have in common?'}
{'answer': "What do mammals and birds have in common? is a good question. I don't know the answer."}
inputs.questionoutputs.answerreference.answerfeedback.is_concise
0What is the largest mammal?What is the largest mammal? is a good question. I don’t know the answer.The blue whaleFalse
1What do mammals and birds have in common?What do mammals and birds have in common? is a good question. I don’t know the answer.They are both warm-bloodedFalse

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