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Fiddler

Fiddler 是企业级生成式和预测式系统运维的先驱，提供统一的平台，使数据科学、MLOps、风险、合规、分析和其他 LOB 团队能够以企业规模监控、解释、分析和改进 ML 部署。

1. 安装和设置​

#!pip install langchain langchain-community langchain-openai fiddler-client

2. Fiddler 连接详情​

在您使用 Fiddler 添加有关模型的信息之前

  1. 您用于连接 Fiddler 的 URL
  2. 您的组织 ID
  3. 您的授权令牌

这些信息可以在您的 Fiddler 环境的“设置”页面中找到。

URL = ""  # Your Fiddler instance URL, Make sure to include the full URL (including https://). For example: https://demo.fiddler.ai
ORG_NAME = ""
AUTH_TOKEN = ""  # Your Fiddler instance auth token

# Fiddler project and model names, used for model registration
PROJECT_NAME = ""
MODEL_NAME = ""  # Model name in Fiddler

3. 创建 Fiddler 回调处理程序实例​

from langchain_community.callbacks.fiddler_callback import FiddlerCallbackHandler

fiddler_handler = FiddlerCallbackHandler(
    url=URL,
    org=ORG_NAME,
    project=PROJECT_NAME,
    model=MODEL_NAME,
    api_key=AUTH_TOKEN,
)

示例 1：基本链​

from langchain_core.output_parsers import StrOutputParser
from langchain_openai import OpenAI

# Note : Make sure openai API key is set in the environment variable OPENAI_API_KEY
llm = OpenAI(temperature=0, streaming=True, callbacks=[fiddler_handler])
output_parser = StrOutputParser()

chain = llm | output_parser

# Invoke the chain. Invocation will be logged to Fiddler, and metrics automatically generated
chain.invoke("How far is moon from earth?")
API 参考：StrOutputParser | OpenAI
# Few more invocations
chain.invoke("What is the temperature on Mars?")
chain.invoke("How much is 2 + 200000?")
chain.invoke("Which movie won the oscars this year?")
chain.invoke("Can you write me a poem about insomnia?")
chain.invoke("How are you doing today?")
chain.invoke("What is the meaning of life?")

示例 2：带有提示模板的链​

from langchain_core.prompts import (
    ChatPromptTemplate,
    FewShotChatMessagePromptTemplate,
)

examples = [
    {"input": "2+2", "output": "4"},
    {"input": "2+3", "output": "5"},
]

example_prompt = ChatPromptTemplate.from_messages(
    [
        ("human", "{input}"),
        ("ai", "{output}"),
    ]
)

few_shot_prompt = FewShotChatMessagePromptTemplate(
    example_prompt=example_prompt,
    examples=examples,
)

final_prompt = ChatPromptTemplate.from_messages(
    [
        ("system", "You are a wondrous wizard of math."),
        few_shot_prompt,
        ("human", "{input}"),
    ]
)

# Note : Make sure openai API key is set in the environment variable OPENAI_API_KEY
llm = OpenAI(temperature=0, streaming=True, callbacks=[fiddler_handler])

chain = final_prompt | llm

# Invoke the chain. Invocation will be logged to Fiddler, and metrics automatically generated
chain.invoke({"input": "What's the square of a triangle?"})

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