import os import time import chromadb from chromadb.config import Settings from langchain_community.document_loaders.csv_loader import CSVLoader from langchain_community.document_loaders import PyPDFLoader, DirectoryLoader, TextLoader, UnstructuredHTMLLoader, JSONLoader, Docx2txtLoader, UnstructuredExcelLoader from langchain_community.vectorstores import Chroma from langchain.text_splitter import RecursiveCharacterTextSplitter, CharacterTextSplitter from langchain_community.embeddings.sentence_transformer import SentenceTransformerEmbeddings, HuggingFaceEmbeddings def get_all_files(folder_path): # 获取文件夹下所有文件和文件夹的名称列表 files = os.listdir(folder_path) # 初始化空列表，用于存储所有文件的绝对路径 absolute_paths = [] # 遍历文件和文件夹名称列表 for file in files: # 拼接文件的绝对路径 absolute_path = os.path.join(folder_path, file) # 如果是文件，将其绝对路径添加到列表中 if os.path.isfile(absolute_path): absolute_paths.append(absolute_path) return absolute_paths # start_time = time.time() # # 加载文档 # folder_path = "./text" # txt_files = get_all_files(folder_path) # docs = [] # ids = [] # for txt_file in txt_files: # loader = PyPDFLoader(txt_file) # documents = loader.load() # text_splitter = RecursiveCharacterTextSplitter(chunk_size=512, chunk_overlap=0) # docs_txt = text_splitter.split_documents(documents) # docs.extend(docs_txt) # ids.extend([os.path.basename(txt_file) + str(i) for i in range(len(docs_txt))]) # start_time1 = time.time() # print(start_time1 - start_time) # loader = PyPDFLoader("/code/memory/text/大语言模型应用.pdf") # loader = TextLoader("/code/memory/text/test.txt") # loader = CSVLoader("/code/memory/text/test1.csv") # loader = UnstructuredHTMLLoader("/"example_data/fake-content.html"") # pip install docx2txt # loader = Docx2txtLoader("/code/memory/text/tesou.docx") # pip install openpyxl # loader = UnstructuredExcelLoader("/code/memorinject_prompt = '(用活泼的语气说话回答，回答严格限制50字以内)' # inject_prompt = '(回答简练，不要输出重复内容，只讲中文)' # text_splitter = RecursiveCharacterTextSplitter(chunk_size=512, chunk_overlap=0) # docs = text_splitter.split_documents(documents) # print(len(docs)) # ids = ["大语言模型应用"+str(i) for i in range(len(docs))] # 加载文档和拆分文档 # loader = TextLoader("/home/gpu/Workspace/jarvis-models/sample/RAG_zh.txt") # documents = loader.load() # text_splitter = RecursiveCharacterTextSplitter(chunk_size=1024, chunk_overlap=50) # docs = text_splitter.split_documents(documents) # print("len(docs)", len(docs)) # ids = ["20240521_store"+str(i) for i in range(len(docs))] # # 加载embedding模型和chroma server # embedding_model = SentenceTransformerEmbeddings(model_name='/home/gpu/Workspace/Models/BAAI/bge-large-zh-v1.5', model_kwargs={"device": "cuda"}) # client = chromadb.HttpClient(host='10.6.81.119', port=7000) # id = "g2e" # client.delete_collection(id) # collection_number = client.get_or_create_collection(id).count() # print("collection_number",collection_number) # start_time2 = time.time() # # 插入向量(如果ids已存在，则会更新向量) # db = Chroma.from_documents(documents=docs, embedding=embedding_model, ids=ids, collection_name=id, client=client) # # db = Chroma.from_texts(texts=['test by tom'], embedding=embedding_model, ids=["大语言模型应用0"], persist_directory="./data/test1", collection_name="123", metadatas=[{"source": "string"}]) # start_time3 = time.time() # print("insert time ", start_time3 - start_time2) # collection_number = client.get_or_create_collection(id).count() # print("collection_number",collection_number) # chroma 召回 from chromadb.utils import embedding_functions embedding_model = embedding_functions.SentenceTransformerEmbeddingFunction(model_name="/home/gpu/Workspace/Models/BAAI/bge-large-zh-v1.5", device = "cuda") client = chromadb.HttpClient(host='10.6.81.119', port=7000) collection = client.get_collection("g2e", embedding_function=embedding_model) print(collection.count()) import time start_time = time.time() query = "你知道澳门银河吗" # query it results = collection.query( query_texts=[query], n_results=5, ) response = results["documents"] print("response: ", response) print("time: ", time.time() - start_time) # # 结合大模型进行总结 # import requests # model_name = "Qwen1.5-14B-Chat" # chat_inputs={ # "model": model_name, # "messages": [ # { # "role": "user", # "content": f"问题: {query}。- 根据知识库内的检索结果，以清晰简洁的表达方式回答问题。- 只从检索内容中选取与问题密切相关的信息。- 不要编造答案，如果答案不在经核实的资料中或无法从经核实的资料中得出，请回答“我无法回答您的问题。”检索内容：{response}" # } # ], # # "temperature": 0, # # "top_p": user_top_p, # # "n": user_n, # # "max_tokens": user_max_tokens, # # "frequency_penalty": user_frequency_penalty, # # "presence_penalty": user_presence_penalty, # # "stop": 100 # } # key ="YOUR_API_KEY" # header = { # 'Content-Type': 'application/json', # 'Authorization': "Bearer " + key # } # url = "http://10.6.81.119:23333/v1/chat/completions" # fastchat_response = requests.post(url, json=chat_inputs, headers=header) # # print(fastchat_response.json()) # print("\n question: ", query) # print("\n ",model_name, fastchat_response.json()["choices"][0]["message"]["content"]) # start_time4 = time.time() # db = Chroma( # client=client, # collection_name=id, # embedding_function=embedding_model, # ) # 更新文档 # db = db.update_documents(ids, documents) # 删除文档 # db.delete([ids]) # 删除集合 # db.delete_collection() # query = "智能体核心思想" # docs = db.similarity_search(query, k=2) # print("result: ",docs) # for doc in docs: # print(doc, "\n") # start_time5 = time.time() # print("search time ", start_time5 - start_time4) # docs = db._collection.get(ids=['大语言模型应用0']) # print(docs) # docs = db.get(where={"source": "text/大语言模型应用.pdf"}) # docs = db.get() # print(docs)