Skip to main content
Open In ColabOpen on GitHub

Gradient

Gradient 允许通过简单的网络 API 对 LLMs 进行微调并获得补全。

本笔记本介绍了如何将Langchain与Gradient一起使用。

导入

from langchain.chains import LLMChain
from langchain_community.llms import GradientLLM
from langchain_core.prompts import PromptTemplate

设置环境API密钥

确保从Gradient AI获取您的API密钥。您将获得10美元的免费信用额度,用于测试和微调不同的模型。

import os
from getpass import getpass

if not os.environ.get("GRADIENT_ACCESS_TOKEN", None):
# Access token under https://auth.gradient.ai/select-workspace
os.environ["GRADIENT_ACCESS_TOKEN"] = getpass("gradient.ai access token:")
if not os.environ.get("GRADIENT_WORKSPACE_ID", None):
# `ID` listed in `$ gradient workspace list`
# also displayed after login at at https://auth.gradient.ai/select-workspace
os.environ["GRADIENT_WORKSPACE_ID"] = getpass("gradient.ai workspace id:")

可选:验证您的环境变量 GRADIENT_ACCESS_TOKENGRADIENT_WORKSPACE_ID 以获取当前部署的模型。使用 gradientai Python 包。

%pip install --upgrade --quiet  gradientai
Requirement already satisfied: gradientai in /home/michi/.venv/lib/python3.10/site-packages (1.0.0)
Requirement already satisfied: aenum>=3.1.11 in /home/michi/.venv/lib/python3.10/site-packages (from gradientai) (3.1.15)
Requirement already satisfied: pydantic<2.0.0,>=1.10.5 in /home/michi/.venv/lib/python3.10/site-packages (from gradientai) (1.10.12)
Requirement already satisfied: python-dateutil>=2.8.2 in /home/michi/.venv/lib/python3.10/site-packages (from gradientai) (2.8.2)
Requirement already satisfied: urllib3>=1.25.3 in /home/michi/.venv/lib/python3.10/site-packages (from gradientai) (1.26.16)
Requirement already satisfied: typing-extensions>=4.2.0 in /home/michi/.venv/lib/python3.10/site-packages (from pydantic<2.0.0,>=1.10.5->gradientai) (4.5.0)
Requirement already satisfied: six>=1.5 in /home/michi/.venv/lib/python3.10/site-packages (from python-dateutil>=2.8.2->gradientai) (1.16.0)
import gradientai

client = gradientai.Gradient()

models = client.list_models(only_base=True)
for model in models:
print(model.id)
99148c6d-c2a0-4fbe-a4a7-e7c05bdb8a09_base_ml_model
f0b97d96-51a8-4040-8b22-7940ee1fa24e_base_ml_model
cc2dafce-9e6e-4a23-a918-cad6ba89e42e_base_ml_model
new_model = models[-1].create_model_adapter(name="my_model_adapter")
new_model.id, new_model.name
('674119b5-f19e-4856-add2-767ae7f7d7ef_model_adapter', 'my_model_adapter')

创建渐变实例

您可以指定不同的参数,例如模型、生成的max_tokens、温度等。

由于我们稍后想要微调我们的模型,我们选择了ID为674119b5-f19e-4856-add2-767ae7f7d7ef_model_adapter的model_adapter,但你可以使用任何基础或可微调的模型。

llm = GradientLLM(
# `ID` listed in `$ gradient model list`
model="674119b5-f19e-4856-add2-767ae7f7d7ef_model_adapter",
# # optional: set new credentials, they default to environment variables
# gradient_workspace_id=os.environ["GRADIENT_WORKSPACE_ID"],
# gradient_access_token=os.environ["GRADIENT_ACCESS_TOKEN"],
model_kwargs=dict(max_generated_token_count=128),
)

创建一个提示模板

我们将为问答创建一个提示模板。

template = """Question: {question}

Answer: """

prompt = PromptTemplate.from_template(template)

启动LLMChain

llm_chain = LLMChain(prompt=prompt, llm=llm)

运行LLMChain

提供一个问题并运行LLMChain。

question = "What NFL team won the Super Bowl in 1994?"

llm_chain.run(question=question)
'\nThe San Francisco 49ers won the Super Bowl in 1994.'

通过微调提高结果(可选)

嗯 - 那是错误的 - 旧金山49人队没有赢。 这个问题的正确答案是The Dallas Cowboys!

让我们通过使用PromptTemplate对正确答案进行微调,来增加正确答案的几率。

dataset = [
{
"inputs": template.format(question="What NFL team won the Super Bowl in 1994?")
+ " The Dallas Cowboys!"
}
]
dataset
[{'inputs': 'Question: What NFL team won the Super Bowl in 1994?\n\nAnswer:  The Dallas Cowboys!'}]
new_model.fine_tune(samples=dataset)
FineTuneResponse(number_of_trainable_tokens=27, sum_loss=78.17996)
# we can keep the llm_chain, as the registered model just got refreshed on the gradient.ai servers.
llm_chain.run(question=question)
'The Dallas Cowboys'

这个页面有帮助吗?