无限
Infinity允许创建Embeddings使用 MIT 许可的 Embedding Server。
本笔记本介绍了如何在 Infinity Github 项目中使用带有嵌入的 Langchain。
进口
from langchain_community.embeddings import InfinityEmbeddings, InfinityEmbeddingsLocal
选项 1：使用 Python 中的无穷大
可选：安装 infinity
要安装 infinity，请使用以下命令。有关更多详细信息，请查看 Github 上的文档。 安装 torch 和 onnx 依赖项。
pip install infinity_emb[torch,optimum]
documents = [
"Baguette is a dish.",
"Paris is the capital of France.",
"numpy is a lib for linear algebra",
"You escaped what I've escaped - You'd be in Paris getting fucked up too",
]
query = "Where is Paris?"
embeddings = InfinityEmbeddingsLocal(
model="sentence-transformers/all-MiniLM-L6-v2",
# revision
revision=None,
# best to keep at 32
batch_size=32,
# for AMD/Nvidia GPUs via torch
device="cuda",
# warm up model before execution
)
async def embed():
# TODO: This function is just to showcase that your call can run async.
# important: use engine inside of `async with` statement to start/stop the batching engine.
async with embeddings:
# avoid closing and starting the engine often.
# rather keep it running.
# you may call `await embeddings.__aenter__()` and `__aexit__()
# if you are sure when to manually start/stop execution` in a more granular way
documents_embedded = await embeddings.aembed_documents(documents)
query_result = await embeddings.aembed_query(query)
print("embeddings created successful")
return documents_embedded, query_result
/home/michael/langchain/libs/langchain/.venv/lib/python3.10/site-packages/tqdm/auto.py:21: TqdmWarning: IProgress not found. Please update jupyter and ipywidgets. See https://ipywidgets.readthedocs.io/en/stable/user_install.html
from .autonotebook import tqdm as notebook_tqdm
The BetterTransformer implementation does not support padding during training, as the fused kernels do not support attention masks. Beware that passing padded batched data during training may result in unexpected outputs. Please refer to https://huggingface.co/docs/optimum/bettertransformer/overview for more details.
/home/michael/langchain/libs/langchain/.venv/lib/python3.10/site-packages/optimum/bettertransformer/models/encoder_models.py:301: UserWarning: The PyTorch API of nested tensors is in prototype stage and will change in the near future. (Triggered internally at ../aten/src/ATen/NestedTensorImpl.cpp:177.)
hidden_states = torch._nested_tensor_from_mask(hidden_states, ~attention_mask)
# run the async code however you would like
# if you are in a jupyter notebook, you can use the following
documents_embedded, query_result = await embed()
# (demo) compute similarity
import numpy as np
scores = np.array(documents_embedded) @ np.array(query_result).T
dict(zip(documents, scores))
选项 2：运行服务器，并通过 API 进行连接
可选：确保启动 Infinity 实例
要安装 infinity，请使用以下命令。有关更多详细信息，请查看 Github 上的文档。
pip install infinity_emb[all]
安装 infinity 软件包
%pip install --upgrade --quiet infinity_emb[全部]
启动服务器 - 最好从单独的终端完成，而不是在 Jupyter Notebook 中完成
model=sentence-transformers/all-MiniLM-L6-v2
port=7797
infinity_emb --port $port --model-name-or-path $model
或 alternativley 只需使用 docker：
model=sentence-transformers/all-MiniLM-L6-v2
port=7797
docker run -it --gpus all -p $port:$port michaelf34/infinity:latest --model-name-or-path $model --port $port
使用 Infinity 实例嵌入文档
documents = [
"Baguette is a dish.",
"Paris is the capital of France.",
"numpy is a lib for linear algebra",
"You escaped what I've escaped - You'd be in Paris getting fucked up too",
]
query = "Where is Paris?"
#
infinity_api_url = "http://localhost:7797/v1"
# model is currently not validated.
embeddings = InfinityEmbeddings(
model="sentence-transformers/all-MiniLM-L6-v2", infinity_api_url=infinity_api_url
)
try:
documents_embedded = embeddings.embed_documents(documents)
query_result = embeddings.embed_query(query)
print("embeddings created successful")
except Exception as ex:
print(
"Make sure the infinity instance is running. Verify by clicking on "
f"{infinity_api_url.replace('v1','docs')} Exception: {ex}. "
)
Make sure the infinity instance is running. Verify by clicking on http://localhost:7797/docs Exception: HTTPConnectionPool(host='localhost', port=7797): Max retries exceeded with url: /v1/embeddings (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f91c35dbd30>: Failed to establish a new connection: [Errno 111] Connection refused')).
# (demo) compute similarity
import numpy as np
scores = np.array(documents_embedded) @ np.array(query_result).T
dict(zip(documents, scores))
{'Baguette is a dish.': 0.31344215908661155,
'Paris is the capital of France.': 0.8148670296896388,
'numpy is a lib for linear algebra': 0.004429399861302009,
"You escaped what I've escaped - You'd be in Paris getting fucked up too": 0.5088476180154582}