langchain Chroma 构建本地向量数据库_chroma 向量数据库索引创建

langchain Chroma 构建本地向量数据库

# import
from langchain_community.document_loaders import TextLoader
from langchain_community.embeddings.sentence_transformer import (
    SentenceTransformerEmbeddings,
)
from langchain_community.embeddings import HuggingFaceEmbeddings 
from langchain_community.vectorstores import Chroma
from langchain_text_splitters import RecursiveCharacterTextSplitter
from langchain_community.document_loaders.word_document import Docx2txtLoader

import glob
import os

# 数据库路径
db_dir = "./db"
# 文档路径
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