Merge branch 'dev' of https://github.com/imClumsyPanda/langchain-ChatGLM into dev

README.md

@@ -226,6 +226,10 @@ Web UI 可以实现如下功能：
   - [x] [THUDM/chatglm-6b-int4-qe](https://huggingface.co/THUDM/chatglm-6b-int4-qe)
   - [x] [ClueAI/ChatYuan-large-v2](https://huggingface.co/ClueAI/ChatYuan-large-v2)
   - [x] [fnlp/moss-moon-003-sft](https://huggingface.co/fnlp/moss-moon-003-sft)
+  - [x] [bigscience/bloomz-7b1](https://huggingface.co/bigscience/bloomz-7b1)
+  - [x] [bigscience/bloom-3b](https://huggingface.co/bigscience/bloom-3b)
+  - [x] [baichuan-inc/baichuan-7B](https://huggingface.co/baichuan-inc/baichuan-7B)
+  - [x] [lmsys/vicuna-13b-delta-v1.1](https://huggingface.co/lmsys/vicuna-13b-delta-v1.1)
   - [x] 支持通过调用 [fastchat](https://github.com/lm-sys/FastChat) api 调用 llm
 - [x] 增加更多 Embedding 模型支持
   - [x] [nghuyong/ernie-3.0-nano-zh](https://huggingface.co/nghuyong/ernie-3.0-nano-zh)
@@ -251,7 +255,7 @@ Web UI 可以实现如下功能：
 - [x] VUE 前端
 
 ## 项目交流群
-<img src="img/qr_code_42.jpg" alt="二维码" width="300" height="300" />
+<img src="img/qr_code_43.jpg" alt="二维码" width="300" height="300" />
 
 
 🎉 langchain-ChatGLM 项目微信交流群，如果你也对本项目感兴趣，欢迎加入群聊参与讨论交流。

api.py

@@ -1,3 +1,4 @@
+#encoding:utf-8
 import argparse
 import json
 import os

chains/modules/embeddings.py

@@ -1,34 +0,0 @@
-from langchain.embeddings.huggingface import HuggingFaceEmbeddings
-
-from typing import Any, List
-
-
-class MyEmbeddings(HuggingFaceEmbeddings):
-    def __init__(self, **kwargs: Any):
-        super().__init__(**kwargs)
-        
-    def embed_documents(self, texts: List[str]) -> List[List[float]]:
-        """Compute doc embeddings using a HuggingFace transformer model.
-
-        Args:
-            texts: The list of texts to embed.
-
-        Returns:
-            List of embeddings, one for each text.
-        """
-        texts = list(map(lambda x: x.replace("\n", " "), texts))
-        embeddings = self.client.encode(texts, normalize_embeddings=True)
-        return embeddings.tolist()
-
-    def embed_query(self, text: str) -> List[float]:
-        """Compute query embeddings using a HuggingFace transformer model.
-
-        Args:
-            text: The text to embed.
-
-        Returns:
-            Embeddings for the text.
-        """
-        text = text.replace("\n", " ")
-        embedding = self.client.encode(text, normalize_embeddings=True)
-        return embedding.tolist()

chains/modules/vectorstores.py

@@ -1,121 +0,0 @@
-from langchain.vectorstores import FAISS
-from typing import Any, Callable, List, Optional, Tuple, Dict
-from langchain.docstore.document import Document
-from langchain.docstore.base import Docstore
-
-from langchain.vectorstores.utils import maximal_marginal_relevance
-from langchain.embeddings.base import Embeddings
-import uuid
-from langchain.docstore.in_memory import InMemoryDocstore
-
-import numpy as np
-
-def dependable_faiss_import() -> Any:
-    """Import faiss if available, otherwise raise error."""
-    try:
-        import faiss
-    except ImportError:
-        raise ValueError(
-            "Could not import faiss python package. "
-            "Please install it with `pip install faiss` "
-            "or `pip install faiss-cpu` (depending on Python version)."
-        )
-    return faiss
-
-class FAISSVS(FAISS):
-    def __init__(self, 
-                 embedding_function: Callable[..., Any], 
-                 index: Any, 
-                 docstore: Docstore, 
-                 index_to_docstore_id: Dict[int, str]):
-        super().__init__(embedding_function, index, docstore, index_to_docstore_id)
-
-    def max_marginal_relevance_search_by_vector(
-        self, embedding: List[float], k: int = 4, fetch_k: int = 20, **kwargs: Any
-    ) -> List[Tuple[Document, float]]:
-        """Return docs selected using the maximal marginal relevance.
-
-        Maximal marginal relevance optimizes for similarity to query AND diversity
-        among selected documents.
-
-        Args:
-            embedding: Embedding to look up documents similar to.
-            k: Number of Documents to return. Defaults to 4.
-            fetch_k: Number of Documents to fetch to pass to MMR algorithm.
-
-        Returns:
-            List of Documents with scores selected by maximal marginal relevance.
-        """
-        scores, indices = self.index.search(np.array([embedding], dtype=np.float32), fetch_k)
-        # -1 happens when not enough docs are returned.
-        embeddings = [self.index.reconstruct(int(i)) for i in indices[0] if i != -1]
-        mmr_selected = maximal_marginal_relevance(
-            np.array([embedding], dtype=np.float32), embeddings, k=k
-        )
-        selected_indices = [indices[0][i] for i in mmr_selected]
-        selected_scores = [scores[0][i] for i in mmr_selected]
-        docs = []
-        for i, score in zip(selected_indices, selected_scores):
-            if i == -1:
-                # This happens when not enough docs are returned.
-                continue
-            _id = self.index_to_docstore_id[i]
-            doc = self.docstore.search(_id)
-            if not isinstance(doc, Document):
-                raise ValueError(f"Could not find document for id {_id}, got {doc}")
-            docs.append((doc, score))
-        return docs
-
-    def max_marginal_relevance_search(
-        self,
-        query: str,
-        k: int = 4,
-        fetch_k: int = 20,
-        **kwargs: Any,
-    ) -> List[Tuple[Document, float]]:
-        """Return docs selected using the maximal marginal relevance.
-
-        Maximal marginal relevance optimizes for similarity to query AND diversity
-        among selected documents.
-
-        Args:
-            query: Text to look up documents similar to.
-            k: Number of Documents to return. Defaults to 4.
-            fetch_k: Number of Documents to fetch to pass to MMR algorithm.
-
-        Returns:
-            List of Documents with scores selected by maximal marginal relevance.
-        """
-        embedding = self.embedding_function(query)
-        docs = self.max_marginal_relevance_search_by_vector(embedding, k, fetch_k)
-        return docs
-    
-    @classmethod
-    def __from(
-        cls,
-        texts: List[str],
-        embeddings: List[List[float]],
-        embedding: Embeddings,
-        metadatas: Optional[List[dict]] = None,
-        **kwargs: Any,
-    ) -> FAISS:
-        faiss = dependable_faiss_import()
-        index = faiss.IndexFlatIP(len(embeddings[0]))
-        index.add(np.array(embeddings, dtype=np.float32))
-
-        # # my code, for speeding up search
-        # quantizer = faiss.IndexFlatL2(len(embeddings[0]))
-        # index = faiss.IndexIVFFlat(quantizer, len(embeddings[0]), 100)
-        # index.train(np.array(embeddings, dtype=np.float32))
-        # index.add(np.array(embeddings, dtype=np.float32))
-
-        documents = []
-        for i, text in enumerate(texts):
-            metadata = metadatas[i] if metadatas else {}
-            documents.append(Document(page_content=text, metadata=metadata))
-        index_to_id = {i: str(uuid.uuid4()) for i in range(len(documents))}
-        docstore = InMemoryDocstore(
-            {index_to_id[i]: doc for i, doc in enumerate(documents)}
-        )
-        return cls(embedding.embed_query, index, docstore, index_to_id)
-

configs/model_config.py

@@ -241,8 +241,8 @@ LLM_HISTORY_LEN = 3
 # 知识库检索时返回的匹配内容条数
 VECTOR_SEARCH_TOP_K = 5
 
-# 知识检索内容相关度 Score, 数值范围约为0-1100，如果为0，则不生效，经测试设置为小于500时，匹配结果更精准
+# 知识检索内容相关度 Score, 数值范围约为0-1100，如果为0，则不生效，建议设置为500左右，经测试设置为小于500时，匹配结果更精准
-VECTOR_SEARCH_SCORE_THRESHOLD = 390
+VECTOR_SEARCH_SCORE_THRESHOLD = 500
 
 NLTK_DATA_PATH = os.path.join(os.path.dirname(os.path.dirname(__file__)), "nltk_data")
 

models/base/base.py

@@ -6,6 +6,7 @@ from queue import Queue
 from threading import Thread
 from langchain.callbacks.manager import CallbackManagerForChainRun
 from models.loader import LoaderCheckPoint
+from pydantic import BaseModel
 import torch
 import transformers
 
@@ -23,13 +24,12 @@ class ListenerToken:
         self._scores = _scores
 
 
-class AnswerResult:
+class AnswerResult(BaseModel):
     """
     消息实体
     """
     history: List[List[str]] = []
     llm_output: Optional[dict] = None
-    listenerToken: ListenerToken = None
 
 
 class AnswerResultStream:
@@ -167,8 +167,6 @@ class BaseAnswer(ABC):
 
         with generate_with_streaming(inputs=inputs, run_manager=run_manager) as generator:
             for answerResult in generator:
-                if answerResult.listenerToken:
-                    output = answerResult.listenerToken.input_ids
                 yield answerResult
 
     @abstractmethod

models/chatglm_llm.py

@@ -94,8 +94,6 @@ class ChatGLMLLMChain(BaseAnswer, Chain, ABC):
                 answer_result = AnswerResult()
                 answer_result.history = history
                 answer_result.llm_output = {"answer": stream_resp}
-                if listenerQueue.listenerQueue.__len__() > 0:
-                    answer_result.listenerToken = listenerQueue.listenerQueue.pop()
                 generate_with_callback(answer_result)
             self.checkPoint.clear_torch_cache()
         else:
@@ -114,8 +112,6 @@ class ChatGLMLLMChain(BaseAnswer, Chain, ABC):
             answer_result = AnswerResult()
             answer_result.history = history
             answer_result.llm_output = {"answer": response}
-            if listenerQueue.listenerQueue.__len__() > 0:
-                answer_result.listenerToken = listenerQueue.listenerQueue.pop()
 
             generate_with_callback(answer_result)
 

models/fastchat_openai_llm.py

@@ -1,6 +1,11 @@
 from abc import ABC
 from langchain.chains.base import Chain
-from typing import Any, Dict, List, Optional, Generator, Collection
+from typing import (
+    Any, Dict, List, Optional, Generator, Collection, Set,
+    Callable,
+    Tuple,
+    Union)
+
 from models.loader import LoaderCheckPoint
 from langchain.callbacks.manager import CallbackManagerForChainRun
 from models.base import (BaseAnswer,
@@ -8,9 +13,26 @@ from models.base import (BaseAnswer,
                          AnswerResult,
                          AnswerResultStream,
                          AnswerResultQueueSentinelTokenListenerQueue)
+from tenacity import (
+    before_sleep_log,
+    retry,
+    retry_if_exception_type,
+    stop_after_attempt,
+    wait_exponential,
+)
+from pydantic import Extra, Field, root_validator
+
+from openai import (
+    ChatCompletion
+)
+
+import openai
+import logging
 import torch
 import transformers
 
+logger = logging.getLogger(__name__)
+
 
 def _build_message_template() -> Dict[str, str]:
     """
@@ -25,15 +47,26 @@ def _build_message_template() -> Dict[str, str]:
 # 将历史对话数组转换为文本格式
 def build_message_list(query, history: List[List[str]]) -> Collection[Dict[str, str]]:
     build_messages: Collection[Dict[str, str]] = []
-    for i, (old_query, response) in enumerate(history):
+
-        user_build_message = _build_message_template()
+    system_build_message = _build_message_template()
-        user_build_message['role'] = 'user'
+    system_build_message['role'] = 'system'
-        user_build_message['content'] = old_query
+    system_build_message['content'] = "You are a helpful assistant."
-        system_build_message = _build_message_template()
+    build_messages.append(system_build_message)
-        system_build_message['role'] = 'system'
+    if history:
-        system_build_message['content'] = response
+        for i, (user, assistant) in enumerate(history):
-        build_messages.append(user_build_message)
+            if user:
-        build_messages.append(system_build_message)
+
+                user_build_message = _build_message_template()
+                user_build_message['role'] = 'user'
+                user_build_message['content'] = user
+                build_messages.append(user_build_message)
+
+            if not assistant:
+                raise RuntimeError("历史数据结构不正确")
+            system_build_message = _build_message_template()
+            system_build_message['role'] = 'assistant'
+            system_build_message['content'] = assistant
+            build_messages.append(system_build_message)
 
     user_build_message = _build_message_template()
     user_build_message['role'] = 'user'
@@ -43,6 +76,9 @@ def build_message_list(query, history: List[List[str]]) -> Collection[Dict[str,
 
 
 class FastChatOpenAILLMChain(RemoteRpcModel, Chain, ABC):
+    client: Any
+    """Timeout for requests to OpenAI completion API. Default is 600 seconds."""
+    max_retries: int = 6
     api_base_url: str = "http://localhost:8000/v1"
     model_name: str = "chatglm-6b"
     max_token: int = 10000
@@ -108,6 +144,35 @@ class FastChatOpenAILLMChain(RemoteRpcModel, Chain, ABC):
     def call_model_name(self, model_name):
         self.model_name = model_name
 
+    def _create_retry_decorator(self) -> Callable[[Any], Any]:
+        min_seconds = 1
+        max_seconds = 60
+        # Wait 2^x * 1 second between each retry starting with
+        # 4 seconds, then up to 10 seconds, then 10 seconds afterwards
+        return retry(
+            reraise=True,
+            stop=stop_after_attempt(self.max_retries),
+            wait=wait_exponential(multiplier=1, min=min_seconds, max=max_seconds),
+            retry=(
+                    retry_if_exception_type(openai.error.Timeout)
+                    | retry_if_exception_type(openai.error.APIError)
+                    | retry_if_exception_type(openai.error.APIConnectionError)
+                    | retry_if_exception_type(openai.error.RateLimitError)
+                    | retry_if_exception_type(openai.error.ServiceUnavailableError)
+            ),
+            before_sleep=before_sleep_log(logger, logging.WARNING),
+        )
+
+    def completion_with_retry(self, **kwargs: Any) -> Any:
+        """Use tenacity to retry the completion call."""
+        retry_decorator = self._create_retry_decorator()
+
+        @retry_decorator
+        def _completion_with_retry(**kwargs: Any) -> Any:
+            return self.client.create(**kwargs)
+
+        return _completion_with_retry(**kwargs)
+
     def _call(
             self,
             inputs: Dict[str, Any],
@@ -121,32 +186,74 @@ class FastChatOpenAILLMChain(RemoteRpcModel, Chain, ABC):
                          run_manager: Optional[CallbackManagerForChainRun] = None,
                          generate_with_callback: AnswerResultStream = None) -> None:
 
-        history = inputs[self.history_key]
+        history = inputs.get(self.history_key, [])
-        streaming = inputs[self.streaming_key]
+        streaming = inputs.get(self.streaming_key, False)
         prompt = inputs[self.prompt_key]
+        stop = inputs.get("stop", "stop")
         print(f"__call:{prompt}")
         try:
 
-            import openai
             # Not support yet
             # openai.api_key = "EMPTY"
             openai.api_key = self.api_key
             openai.api_base = self.api_base_url
-        except ImportError:
+            self.client = openai.ChatCompletion
+        except AttributeError:
             raise ValueError(
-                "Could not import openai python package. "
+                "`openai` has no `ChatCompletion` attribute, this is likely "
-                "Please install it with `pip install openai`."
+                "due to an old version of the openai package. Try upgrading it "
+                "with `pip install --upgrade openai`."
             )
-        # create a chat completion
+        msg = build_message_list(prompt, history=history)
-        completion = openai.ChatCompletion.create(
-            model=self.model_name,
-            messages=build_message_list(prompt)
-        )
-        print(f"response:{completion.choices[0].message.content}")
-        print(f"+++++++++++++++++++++++++++++++++++")
 
-        history += [[prompt, completion.choices[0].message.content]]
+        if streaming:
-        answer_result = AnswerResult()
+            params = {"stream": streaming,
-        answer_result.history = history
+                      "model": self.model_name,
-        answer_result.llm_output = {"answer": completion.choices[0].message.content}
+                      "stop": stop}
-        generate_with_callback(answer_result)
+            out_str = ""
+            for stream_resp in self.completion_with_retry(
+                    messages=msg,
+                    **params
+            ):
+                role = stream_resp["choices"][0]["delta"].get("role", "")
+                token = stream_resp["choices"][0]["delta"].get("content", "")
+                out_str += token
+                history[-1] = [prompt, out_str]
+                answer_result = AnswerResult()
+                answer_result.history = history
+                answer_result.llm_output = {"answer": out_str}
+                generate_with_callback(answer_result)
+        else:
+
+            params = {"stream": streaming,
+                      "model": self.model_name,
+                      "stop": stop}
+            response = self.completion_with_retry(
+                messages=msg,
+                **params
+            )
+            role = response["choices"][0]["message"].get("role", "")
+            content = response["choices"][0]["message"].get("content", "")
+            history += [[prompt, content]]
+            answer_result = AnswerResult()
+            answer_result.history = history
+            answer_result.llm_output = {"answer": content}
+            generate_with_callback(answer_result)
+
+
+if __name__ == "__main__":
+
+    chain = FastChatOpenAILLMChain()
+
+    chain.set_api_key("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")
+    # chain.set_api_base_url("https://api.openai.com/v1")
+    # chain.call_model_name("gpt-3.5-turbo")
+
+    answer_result_stream_result = chain({"streaming": True,
+                                         "prompt": "你好",
+                                         "history": []
+                                         })
+
+    for answer_result in answer_result_stream_result['answer_result_stream']:
+        resp = answer_result.llm_output["answer"]
+        print(resp)

models/llama_llm.py

@@ -186,7 +186,5 @@ class LLamaLLMChain(BaseAnswer, Chain, ABC):
         answer_result = AnswerResult()
         history += [[prompt, reply]]
         answer_result.history = history
-        if listenerQueue.listenerQueue.__len__() > 0:
-            answer_result.listenerToken = listenerQueue.listenerQueue.pop()
         answer_result.llm_output = {"answer": reply}
         generate_with_callback(answer_result)

requirements.txt

@@ -11,7 +11,7 @@ beautifulsoup4
 icetk
 cpm_kernels
 faiss-cpu
-gradio==3.28.3
+gradio==3.37.0
 fastapi~=0.95.0
 uvicorn~=0.21.1
 pypinyin~=0.48.0

webui_st.py

@@ -1,5 +1,5 @@
 import streamlit as st
-# from st_btn_select import st_btn_select
+from streamlit_chatbox import st_chatbox
 import tempfile
 ###### 从webui借用的代码 #####
 ######   做了少量修改    #####
@@ -31,7 +31,6 @@ def get_vs_list():
 
 embedding_model_dict_list = list(embedding_model_dict.keys())
 llm_model_dict_list = list(llm_model_dict.keys())
-# flag_csv_logger = gr.CSVLogger()
 
 
 def get_answer(query, vs_path, history, mode, score_threshold=VECTOR_SEARCH_SCORE_THRESHOLD,
@@ -50,6 +49,9 @@ def get_answer(query, vs_path, history, mode, score_threshold=VECTOR_SEARCH_SCOR
             history[-1][-1] += source
             yield history, ""
     elif mode == "知识库问答" and vs_path is not None and os.path.exists(vs_path):
+        local_doc_qa.top_k = vector_search_top_k
+        local_doc_qa.chunk_conent = chunk_conent
+        local_doc_qa.chunk_size = chunk_size
         for resp, history in local_doc_qa.get_knowledge_based_answer(
                 query=query, vs_path=vs_path, chat_history=history, streaming=streaming):
             source = "\n\n"
@@ -95,17 +97,101 @@ def get_answer(query, vs_path, history, mode, score_threshold=VECTOR_SEARCH_SCOR
                 "\n\n当前知识库为空，如需基于知识库进行问答，请先加载知识库后，再进行提问。" if mode == "知识库问答" else "")
             yield history, ""
     logger.info(f"flagging: username={FLAG_USER_NAME},query={query},vs_path={vs_path},mode={mode},history={history}")
-    # flag_csv_logger.flag([query, vs_path, history, mode], username=FLAG_USER_NAME)
 
 
-def init_model(llm_model: str = 'chat-glm-6b', embedding_model: str = 'text2vec'):
+def get_vector_store(vs_id, files, sentence_size, history, one_conent, one_content_segmentation):
+    vs_path = os.path.join(KB_ROOT_PATH, vs_id, "vector_store")
+    filelist = []
+    if not os.path.exists(os.path.join(KB_ROOT_PATH, vs_id, "content")):
+        os.makedirs(os.path.join(KB_ROOT_PATH, vs_id, "content"))
+    qa = st.session_state.local_doc_qa
+    if qa.llm_model_chain and qa.embeddings:
+        if isinstance(files, list):
+            for file in files:
+                filename = os.path.split(file.name)[-1]
+                shutil.move(file.name, os.path.join(
+                    KB_ROOT_PATH, vs_id, "content", filename))
+                filelist.append(os.path.join(
+                    KB_ROOT_PATH, vs_id, "content", filename))
+            vs_path, loaded_files = qa.init_knowledge_vector_store(
+                filelist, vs_path, sentence_size)
+        else:
+            vs_path, loaded_files = qa.one_knowledge_add(vs_path, files, one_conent, one_content_segmentation,
+                                                                   sentence_size)
+        if len(loaded_files):
+            file_status = f"已添加 {'、'.join([os.path.split(i)[-1] for i in loaded_files if i])} 内容至知识库，并已加载知识库，请开始提问"
+        else:
+            file_status = "文件未成功加载，请重新上传文件"
+    else:
+        file_status = "模型未完成加载，请先在加载模型后再导入文件"
+        vs_path = None
+    logger.info(file_status)
+    return vs_path, None, history + [[None, file_status]]
+
+
+knowledge_base_test_mode_info = ("【注意】\n\n"
+                                 "1. 您已进入知识库测试模式，您输入的任何对话内容都将用于进行知识库查询，"
+                                 "并仅输出知识库匹配出的内容及相似度分值和及输入的文本源路径，查询的内容并不会进入模型查询。\n\n"
+                                 "2. 知识相关度 Score 经测试，建议设置为 500 或更低，具体设置情况请结合实际使用调整。"
+                                 """3. 使用"添加单条数据"添加文本至知识库时，内容如未分段，则内容越多越会稀释各查询内容与之关联的score阈值。\n\n"""
+                                 "4. 单条内容长度建议设置在100-150左右。")
+
+
+webui_title = """
+# 🎉langchain-ChatGLM WebUI🎉
+👍 [https://github.com/imClumsyPanda/langchain-ChatGLM](https://github.com/imClumsyPanda/langchain-ChatGLM)
+"""
+######                   #####
+
+
+###### todo #####
+# 1. streamlit运行方式与一般web服务器不同，使用模块是无法实现单例模式的，所以shared和local_doc_qa都需要进行全局化处理。
+#   目前已经实现了local_doc_qa和shared.loaderCheckPoint的全局化。
+# 2. 当前local_doc_qa是一个全局变量，一方面：任何一个session对其做出修改，都会影响所有session的对话;另一方面，如何处理所有session的请求竞争也是问题。
+#   这个暂时无法避免，在配置普通的机器上暂时也无需考虑。
+# 3. 目前只包含了get_answer对应的参数，以后可以添加其他参数，如temperature。
+######      #####
+
+
+###### 配置项 #####
+class ST_CONFIG:
+    default_mode = "知识库问答"
+    default_kb = ""
+######        #####
+
+
+class TempFile:
+    '''
+    为保持与get_vector_store的兼容性，需要将streamlit上传文件转化为其可以接受的方式
+    '''
+
+    def __init__(self, path):
+        self.name = path
+
+
+@st.cache_resource(show_spinner=False, max_entries=1)
+def load_model(
+    llm_model: str = LLM_MODEL,
+    embedding_model: str = EMBEDDING_MODEL,
+    use_ptuning_v2: bool = USE_PTUNING_V2,
+):
+    '''
+    对应init_model，利用streamlit cache避免模型重复加载
+    '''
     local_doc_qa = LocalDocQA()
     # 初始化消息
     args = parser.parse_args()
     args_dict = vars(args)
     args_dict.update(model=llm_model)
-    shared.loaderCheckPoint = LoaderCheckPoint(args_dict)
+    if shared.loaderCheckPoint is None:  # avoid checkpoint reloading when reinit model
-    llm_model_ins = shared.loaderLLM()
+        shared.loaderCheckPoint = LoaderCheckPoint(args_dict)
+    # shared.loaderCheckPoint.model_name is different by no_remote_model.
+    # if it is not set properly error occurs when reinit llm model(issue#473).
+    # as no_remote_model is removed from model_config, need workaround to set it automaticlly.
+    local_model_path = llm_model_dict.get(llm_model, {}).get('local_model_path') or ''
+    no_remote_model = os.path.isdir(local_model_path)
+    llm_model_ins = shared.loaderLLM(llm_model, no_remote_model, use_ptuning_v2)
+    llm_model_ins.history_len = LLM_HISTORY_LEN
 
     try:
         local_doc_qa.init_cfg(llm_model=llm_model_ins,
@@ -128,235 +214,9 @@ def init_model(llm_model: str = 'chat-glm-6b', embedding_model: str = 'text2vec'
     return local_doc_qa
 
 
-# 暂未使用到，先保留
-# def reinit_model(llm_model, embedding_model, llm_history_len, no_remote_model, use_ptuning_v2, use_lora, top_k, history):
-#     try:
-#         llm_model_ins = shared.loaderLLM(llm_model, no_remote_model, use_ptuning_v2)
-#         llm_model_ins.history_len = llm_history_len
-#         local_doc_qa.init_cfg(llm_model=llm_model_ins,
-#                               embedding_model=embedding_model,
-#                               top_k=top_k)
-#         model_status = """模型已成功重新加载，可以开始对话，或从右侧选择模式后开始对话"""
-#         logger.info(model_status)
-#     except Exception as e:
-#         logger.error(e)
-#         model_status = """模型未成功重新加载，请到页面左上角"模型配置"选项卡中重新选择后点击"加载模型"按钮"""
-#         logger.info(model_status)
-#     return history + [[None, model_status]]
-
-
-def get_vector_store(local_doc_qa, vs_id, files, sentence_size, history, one_conent, one_content_segmentation):
-    vs_path = os.path.join(KB_ROOT_PATH, vs_id, "vector_store")
-    filelist = []
-    if not os.path.exists(os.path.join(KB_ROOT_PATH, vs_id, "content")):
-        os.makedirs(os.path.join(KB_ROOT_PATH, vs_id, "content"))
-    if local_doc_qa.llm and local_doc_qa.embeddings:
-        if isinstance(files, list):
-            for file in files:
-                filename = os.path.split(file.name)[-1]
-                shutil.move(file.name, os.path.join(
-                    KB_ROOT_PATH, vs_id, "content", filename))
-                filelist.append(os.path.join(
-                    KB_ROOT_PATH, vs_id, "content", filename))
-            vs_path, loaded_files = local_doc_qa.init_knowledge_vector_store(
-                filelist, vs_path, sentence_size)
-        else:
-            vs_path, loaded_files = local_doc_qa.one_knowledge_add(vs_path, files, one_conent, one_content_segmentation,
-                                                                   sentence_size)
-        if len(loaded_files):
-            file_status = f"已添加 {'、'.join([os.path.split(i)[-1] for i in loaded_files if i])} 内容至知识库，并已加载知识库，请开始提问"
-        else:
-            file_status = "文件未成功加载，请重新上传文件"
-    else:
-        file_status = "模型未完成加载，请先在加载模型后再导入文件"
-        vs_path = None
-    logger.info(file_status)
-    return vs_path, None, history + [[None, file_status]]
-
-
-knowledge_base_test_mode_info = ("【注意】\n\n"
-                                 "1. 您已进入知识库测试模式，您输入的任何对话内容都将用于进行知识库查询，"
-                                 "并仅输出知识库匹配出的内容及相似度分值和及输入的文本源路径，查询的内容并不会进入模型查询。\n\n"
-                                 "2. 知识相关度 Score 经测试，建议设置为 500 或更低，具体设置情况请结合实际使用调整。"
-                                 """3. 使用"添加单条数据"添加文本至知识库时，内容如未分段，则内容越多越会稀释各查询内容与之关联的score阈值。\n\n"""
-                                 "4. 单条内容长度建议设置在100-150左右。\n\n"
-                                 "5. 本界面用于知识入库及知识匹配相关参数设定，但当前版本中，"
-                                 "本界面中修改的参数并不会直接修改对话界面中参数，仍需前往`configs/model_config.py`修改后生效。"
-                                 "相关参数将在后续版本中支持本界面直接修改。")
-
-
-webui_title = """
-# 🎉langchain-ChatGLM WebUI🎉
-👍 [https://github.com/imClumsyPanda/langchain-ChatGLM](https://github.com/imClumsyPanda/langchain-ChatGLM)
-"""
-######                   #####
-
-
-###### todo #####
-# 1. streamlit运行方式与一般web服务器不同，使用模块是无法实现单例模式的，所以shared和local_doc_qa都需要进行全局化处理。
-#   目前已经实现了local_doc_qa的全局化，后面要考虑shared。
-# 2. 当前local_doc_qa是一个全局变量，一方面：任何一个session对其做出修改，都会影响所有session的对话;另一方面，如何处理所有session的请求竞争也是问题。
-#   这个暂时无法避免，在配置普通的机器上暂时也无需考虑。
-# 3. 目前只包含了get_answer对应的参数，以后可以添加其他参数，如temperature。
-######      #####
-
-
-###### 配置项 #####
-class ST_CONFIG:
-    user_bg_color = '#77ff77'
-    user_icon = 'https://tse2-mm.cn.bing.net/th/id/OIP-C.LTTKrxNWDr_k74wz6jKqBgHaHa?w=203&h=203&c=7&r=0&o=5&pid=1.7'
-    robot_bg_color = '#ccccee'
-    robot_icon = 'https://ts1.cn.mm.bing.net/th/id/R-C.5302e2cc6f5c7c4933ebb3394e0c41bc?rik=z4u%2b7efba5Mgxw&riu=http%3a%2f%2fcomic-cons.xyz%2fwp-content%2fuploads%2fStar-Wars-avatar-icon-C3PO.png&ehk=kBBvCvpJMHPVpdfpw1GaH%2brbOaIoHjY5Ua9PKcIs%2bAc%3d&risl=&pid=ImgRaw&r=0'
-    default_mode = '知识库问答'
-    defalut_kb = ''
-######        #####
-
-
-class MsgType:
-    '''
-    目前仅支持文本类型的输入输出，为以后多模态模型预留图像、视频、音频支持。
-    '''
-    TEXT = 1
-    IMAGE = 2
-    VIDEO = 3
-    AUDIO = 4
-
-
-class TempFile:
-    '''
-    为保持与get_vector_store的兼容性，需要将streamlit上传文件转化为其可以接受的方式
-    '''
-
-    def __init__(self, path):
-        self.name = path
-
-
-def init_session():
-    st.session_state.setdefault('history', [])
-
-
-# def get_query_params():
-#     '''
-#     可以用url参数传递配置参数：llm_model, embedding_model, kb, mode。
-#     该参数将覆盖model_config中的配置。处于安全考虑，目前只支持kb和mode
-#     方便将固定的配置分享给特定的人。
-#     '''
-#     params = st.experimental_get_query_params()
-#     return {k: v[0] for k, v in params.items() if v}
-
-
-def robot_say(msg, kb=''):
-    st.session_state['history'].append(
-        {'is_user': False, 'type': MsgType.TEXT, 'content': msg, 'kb': kb})
-
-
-def user_say(msg):
-    st.session_state['history'].append(
-        {'is_user': True, 'type': MsgType.TEXT, 'content': msg})
-
-
-def format_md(msg, is_user=False, bg_color='', margin='10%'):
-    '''
-    将文本消息格式化为markdown文本
-    '''
-    if is_user:
-        bg_color = bg_color or ST_CONFIG.user_bg_color
-        text = f'''
-                <div style="background:{bg_color};
-                        margin-left:{margin};
-                        word-break:break-all;
-                        float:right;
-                        padding:2%;
-                        border-radius:2%;">
-                {msg}
-                </div>
-                '''
-    else:
-        bg_color = bg_color or ST_CONFIG.robot_bg_color
-        text = f'''
-                <div style="background:{bg_color};
-                        margin-right:{margin};
-                        word-break:break-all;
-                        padding:2%;
-                        border-radius:2%;">
-                {msg}
-                </div>
-                '''
-    return text
-
-
-def message(msg,
-            is_user=False,
-            msg_type=MsgType.TEXT,
-            icon='',
-            bg_color='',
-            margin='10%',
-            kb='',
-            ):
-    '''
-    渲染单条消息。目前仅支持文本
-    '''
-    cols = st.columns([1, 10, 1])
-    empty = cols[1].empty()
-    if is_user:
-        icon = icon or ST_CONFIG.user_icon
-        bg_color = bg_color or ST_CONFIG.user_bg_color
-        cols[2].image(icon, width=40)
-        if msg_type == MsgType.TEXT:
-            text = format_md(msg, is_user, bg_color, margin)
-            empty.markdown(text, unsafe_allow_html=True)
-        else:
-            raise RuntimeError('only support text message now.')
-    else:
-        icon = icon or ST_CONFIG.robot_icon
-        bg_color = bg_color or ST_CONFIG.robot_bg_color
-        cols[0].image(icon, width=40)
-        if kb:
-            cols[0].write(f'({kb})')
-        if msg_type == MsgType.TEXT:
-            text = format_md(msg, is_user, bg_color, margin)
-            empty.markdown(text, unsafe_allow_html=True)
-        else:
-            raise RuntimeError('only support text message now.')
-    return empty
-
-
-def output_messages(
-    user_bg_color='',
-    robot_bg_color='',
-    user_icon='',
-    robot_icon='',
-):
-    with chat_box.container():
-        last_response = None
-        for msg in st.session_state['history']:
-            bg_color = user_bg_color if msg['is_user'] else robot_bg_color
-            icon = user_icon if msg['is_user'] else robot_icon
-            empty = message(msg['content'],
-                            is_user=msg['is_user'],
-                            icon=icon,
-                            msg_type=msg['type'],
-                            bg_color=bg_color,
-                            kb=msg.get('kb', '')
-                            )
-            if not msg['is_user']:
-                last_response = empty
-    return last_response
-
-
-@st.cache_resource(show_spinner=False, max_entries=1)
-def load_model(llm_model: str, embedding_model: str):
-    '''
-    对应init_model，利用streamlit cache避免模型重复加载
-    '''
-    local_doc_qa = init_model(llm_model, embedding_model)
-    robot_say('模型已成功加载，可以开始对话，或从左侧选择模式后开始对话。\n请尽量不要刷新页面，以免模型出错或重复加载。')
-    return local_doc_qa
-
-
 # @st.cache_data
 def answer(query, vs_path='', history=[], mode='', score_threshold=0,
-           vector_search_top_k=5, chunk_conent=True, chunk_size=100, qa=None
+           vector_search_top_k=5, chunk_conent=True, chunk_size=100
            ):
     '''
     对应get_answer，--利用streamlit cache缓存相同问题的答案--
@@ -365,48 +225,24 @@ def answer(query, vs_path='', history=[], mode='', score_threshold=0,
                       vector_search_top_k, chunk_conent, chunk_size)
 
 
-def load_vector_store(
+def use_kb_mode(m):
-    vs_id,
+    return m in ["知识库问答", "知识库测试"]
-    files,
-    sentence_size=100,
-    history=[],
-    one_conent=None,
-    one_content_segmentation=None,
-):
-    return get_vector_store(
-        local_doc_qa,
-        vs_id,
-        files,
-        sentence_size,
-        history,
-        one_conent,
-        one_content_segmentation,
-    )
 
 
 # main ui
 st.set_page_config(webui_title, layout='wide')
-init_session()
-# params = get_query_params()
-# llm_model = params.get('llm_model', LLM_MODEL)
-# embedding_model = params.get('embedding_model', EMBEDDING_MODEL)
-
-with st.spinner(f'正在加载模型({LLM_MODEL} + {EMBEDDING_MODEL})，请耐心等候...'):
-    local_doc_qa = load_model(LLM_MODEL, EMBEDDING_MODEL)
-
-
-def use_kb_mode(m):
-    return m in ['知识库问答', '知识库测试']
 
+chat_box = st_chatbox(greetings=["模型已成功加载，可以开始对话，或从左侧选择模式后开始对话。"])
+# 使用 help(st_chatbox) 查看自定义参数
 
 # sidebar
 modes = ['LLM 对话', '知识库问答', 'Bing搜索问答', '知识库测试']
 with st.sidebar:
     def on_mode_change():
         m = st.session_state.mode
-        robot_say(f'已切换到"{m}"模式')
+        chat_box.robot_say(f'已切换到"{m}"模式')
         if m == '知识库测试':
-            robot_say(knowledge_base_test_mode_info)
+            chat_box.robot_say(knowledge_base_test_mode_info)
 
     index = 0
     try:
@@ -416,7 +252,7 @@ with st.sidebar:
     mode = st.selectbox('对话模式', modes, index,
                         on_change=on_mode_change, key='mode')
 
-    with st.expander('模型配置', '知识' not in mode):
+    with st.expander('模型配置', not use_kb_mode(mode)):
         with st.form('model_config'):
             index = 0
             try:
@@ -425,9 +261,8 @@ with st.sidebar:
                 pass
             llm_model = st.selectbox('LLM模型', llm_model_dict_list, index)
 
-            no_remote_model = st.checkbox('加载本地模型', False)
             use_ptuning_v2 = st.checkbox('使用p-tuning-v2微调过的模型', False)
-            use_lora = st.checkbox('使用lora微调的权重', False)
+ 
             try:
                 index = embedding_model_dict_list.index(EMBEDDING_MODEL)
             except:
@@ -437,9 +272,12 @@ with st.sidebar:
 
             btn_load_model = st.form_submit_button('重新加载模型')
             if btn_load_model:
-                local_doc_qa = load_model(llm_model, embedding_model)
+                local_doc_qa = load_model(llm_model, embedding_model, use_ptuning_v2)
 
-    if mode in ['知识库问答', '知识库测试']:
+    history_len = st.slider(
+        "LLM对话轮数", 1, 50, LLM_HISTORY_LEN)
+
+    if use_kb_mode(mode):
         vs_list = get_vs_list()
         vs_list.remove('新建知识库')
 
@@ -452,7 +290,7 @@ with st.sidebar:
                 st.session_state.vs_path = name
 
         def on_vs_change():
-            robot_say(f'已加载知识库： {st.session_state.vs_path}')
+            chat_box.robot_say(f'已加载知识库： {st.session_state.vs_path}')
         with st.expander('知识库配置', True):
             cols = st.columns([12, 10])
             kb_name = cols[0].text_input(
@@ -460,21 +298,22 @@ with st.sidebar:
             if 'kb_name' not in st.session_state:
                 st.session_state.kb_name = kb_name
             cols[1].button('新建知识库', on_click=on_new_kb)
+            index = 0
+            try:
+                index = vs_list.index(ST_CONFIG.default_kb)
+            except:
+                pass
             vs_path = st.selectbox(
-                '选择知识库', vs_list, on_change=on_vs_change, key='vs_path')
+                '选择知识库', vs_list, index, on_change=on_vs_change, key='vs_path')
 
             st.text('')
 
             score_threshold = st.slider(
                 '知识相关度阈值', 0, 1000, VECTOR_SEARCH_SCORE_THRESHOLD)
             top_k = st.slider('向量匹配数量', 1, 20, VECTOR_SEARCH_TOP_K)
-            history_len = st.slider(
-                'LLM对话轮数', 1, 50, LLM_HISTORY_LEN)  # 也许要跟知识库分开设置
-            # local_doc_qa.llm.set_history_len(history_len)
             chunk_conent = st.checkbox('启用上下文关联', False)
-            st.text('')
-            # chunk_conent = st.checkbox('分割文本', True) # 知识库文本分割入库
             chunk_size = st.slider('上下文关联长度', 1, 1000, CHUNK_SIZE)
+            st.text('')
             sentence_size = st.slider('文本入库分句长度限制', 1, 1000, SENTENCE_SIZE)
             files = st.file_uploader('上传知识文件',
                                      ['docx', 'txt', 'md', 'csv', 'xlsx', 'pdf'],
@@ -487,56 +326,61 @@ with st.sidebar:
                     with open(file, 'wb') as fp:
                         fp.write(f.getvalue())
                     file_list.append(TempFile(file))
-                _, _, history = load_vector_store(
+                    _, _, history = get_vector_store(
                     vs_path, file_list, sentence_size, [], None, None)
                 st.session_state.files = []
 
 
-# main body
+# load model after params rendered
-chat_box = st.empty()
+with st.spinner(f"正在加载模型({llm_model} + {embedding_model})，请耐心等候..."):
+    local_doc_qa = load_model(
+        llm_model,
+        embedding_model,
+        use_ptuning_v2,
+    )
+    local_doc_qa.llm_model_chain.history_len = history_len
+    if use_kb_mode(mode):
+        local_doc_qa.chunk_conent = chunk_conent
+        local_doc_qa.chunk_size = chunk_size
+    # local_doc_qa.llm_model_chain.temperature = temperature # 这样设置temperature似乎不起作用
+    st.session_state.local_doc_qa = local_doc_qa
 
-with st.form('my_form', clear_on_submit=True):
+# input form
+with st.form("my_form", clear_on_submit=True):
     cols = st.columns([8, 1])
-    question = cols[0].text_input(
+    question = cols[0].text_area(
         'temp', key='input_question', label_visibility='collapsed')
 
-    def on_send():
+    if cols[1].form_submit_button("发送"):
-        q = st.session_state.input_question
+        chat_box.user_say(question)
-        if q:
+        history = []
-            user_say(q)
+        if mode == "LLM 对话":
+            chat_box.robot_say("正在思考...")
+            chat_box.output_messages()
+            for history, _ in answer(question,
+                                     history=[],
+                                     mode=mode):
+                chat_box.update_last_box_text(history[-1][-1])
+        elif use_kb_mode(mode):
+            chat_box.robot_say(f"正在查询 [{vs_path}] ...")
+            chat_box.output_messages()
+            for history, _ in answer(question,
+                                     vs_path=os.path.join(
+                                         KB_ROOT_PATH, vs_path, 'vector_store'),
+                                     history=[],
+                                     mode=mode,
+                                     score_threshold=score_threshold,
+                                     vector_search_top_k=top_k,
+                                     chunk_conent=chunk_conent,
+                                     chunk_size=chunk_size):
+                chat_box.update_last_box_text(history[-1][-1])
+        else:
+            chat_box.robot_say(f"正在执行Bing搜索...")
+            chat_box.output_messages()
+            for history, _ in answer(question,
+                                     history=[],
+                                     mode=mode):
+                chat_box.update_last_box_text(history[-1][-1])
 
-            if mode == 'LLM 对话':
+# st.write(chat_box.history)
-                robot_say('正在思考...')
+chat_box.output_messages()
-                last_response = output_messages()
-                for history, _ in answer(q,
-                                         history=[],
-                                         mode=mode):
-                    last_response.markdown(
-                        format_md(history[-1][-1], False),
-                        unsafe_allow_html=True
-                    )
-            elif use_kb_mode(mode):
-                robot_say('正在思考...', vs_path)
-                last_response = output_messages()
-                for history, _ in answer(q,
-                                         vs_path=os.path.join(
-                                             KB_ROOT_PATH, vs_path, "vector_store"),
-                                         history=[],
-                                         mode=mode,
-                                         score_threshold=score_threshold,
-                                         vector_search_top_k=top_k,
-                                         chunk_conent=chunk_conent,
-                                         chunk_size=chunk_size):
-                    last_response.markdown(
-                        format_md(history[-1][-1], False, 'ligreen'),
-                        unsafe_allow_html=True
-                    )
-            else:
-                robot_say('正在思考...')
-                last_response = output_messages()
-            st.session_state['history'][-1]['content'] = history[-1][-1]
-    submit = cols[1].form_submit_button('发送', on_click=on_send)
-
-output_messages()
-
-# st.write(st.session_state['history'])