Source code for langchain_community.embeddings.gpt4all
from typing import Any, Dict, List, Optional
from langchain_core.embeddings import Embeddings
from langchain_core.pydantic_v1 import BaseModel, root_validator
[docs]class GPT4AllEmbeddings(BaseModel, Embeddings):
"""GPT4All嵌入模型。
要使用,您应该安装gpt4all python包
示例:
.. code-block:: python
from langchain_community.embeddings import GPT4AllEmbeddings
model_name = "all-MiniLM-L6-v2.gguf2.f16.gguf"
gpt4all_kwargs = {'allow_download': 'True'}
embeddings = GPT4AllEmbeddings(
model_name=model_name,
gpt4all_kwargs=gpt4all_kwargs
)
"""
model_name: str
n_threads: Optional[int] = None
device: Optional[str] = "cpu"
gpt4all_kwargs: Optional[dict] = {}
client: Any #: :meta private:
@root_validator()
def validate_environment(cls, values: Dict) -> Dict:
"""验证是否安装了GPT4All库。"""
try:
from gpt4all import Embed4All
values["client"] = Embed4All(
model_name=values["model_name"],
n_threads=values.get("n_threads"),
device=values.get("device"),
**values.get("gpt4all_kwargs"),
)
except ImportError:
raise ImportError(
"Could not import gpt4all library. "
"Please install the gpt4all library to "
"use this embedding model: pip install gpt4all"
)
return values
[docs] def embed_documents(self, texts: List[str]) -> List[List[float]]:
"""使用GPT4All嵌入文档列表。
参数:
texts:要嵌入的文本列表。
返回:
每个文本的嵌入列表。
"""
embeddings = [self.client.embed(text) for text in texts]
return [list(map(float, e)) for e in embeddings]
[docs] def embed_query(self, text: str) -> List[float]:
"""使用GPT4All嵌入一个查询。
参数:
text: 要嵌入的文本。
返回:
文本的嵌入结果。
"""
return self.embed_documents([text])[0]