Chat langchain rephrase not working github. Oct 17, 2023 · This class is defined in the langchain.

328 lines (274 loc) · 11. / backend. Dec 9, 2023 · Issue you'd like to raise. One possibility could be that the conversation history is exceeding the maximum token limit, which is 12000 tokens for ConversationBufferMemory in the LangChain codebase. Given the chat history and new user input, determine what a standalone question would be using GPT-3. LangChain provides a standard interface for agents, a selection of agents to choose from, and examples of end to end agents. It seems like ChatAnthropic unexpectedly does not work with the RunnableWithMessageHistory runnable. ipynb <-- Example of using LangChain to interact with a PDF file via chat . 👉 Bring your own DB. It loads and splits documents from websites or PDFs, remembers conversations, and provides accurate, context-aware answers based on the indexed data. langchain: Chains, agents, and retrieval strategies that make up an application's cognitive architecture. com is not working, i am not getting a response from it. 5. From what I understand, you experienced an issue with the stop functionality not working with Ollama models in your custom script. They use a prompt similar to this: """Given the following conversation and a follow up question, rephrase the follow up question to be """ """a standalone question, in its original language. 🔗 Chains: Chains go beyond just a single LLM call, and are sequences of calls (whether to an LLM or a different utility). Some suggestions were given to pass the chat history as a partial variable to the PromptTemplate and to confirm if the agent supports using memory. Contribute to logan-zou/Chat_with_Datawhale_langchain development by creating an account on GitHub. Features: 👉 Create custom chatGPT like Chatbot. Mar 19, 2024 · import `json` import redis from fastapi import APIRouter, status from fastapi. my all code: import getpass import time from langchain. memory import ConversationBufferMemory from langchain import PromptTemplate from langchain. Apr 7, 2023 · edited. responses import JSONResponse from langchain. Aug 21, 2023 · from langchain. 所有 Chat 接口修改为与 OpenAI API 形式对齐，真正实现 OpenAI API In, OpenAI API I searched the LangChain documentation with the integrated search. Oct 17, 2023 · This class is defined in the langchain. langchain. Mar 4, 2024 · the code works perfectly but the chat_history is not being saved and the chatbot has no memory how can i fix that please ? hi, @Yafaa5 I run the demo code and the cache work well. After each interaction, you need to update the memory with the new conversation. About. Adapt if needed. chat module, as you can see in the source code. Here's how you can modify your code: If the tools array is empty, the agent will not have any tools to perform these actions, which could lead to errors or unexpected behavior. Nov 17, 2023 · Chat Langchain is not working properly if we ask something outside of context instead of saying Hmm, Im not sure, its generating data from internet In code, i can see we mentioned to not do any assumptions and provide data only on contex May 12, 2023 · from langchain. I'm here to assist you with your issue. 139 ) to android/JVM/Kotlin Multiplatform. Langchain-Chatchat（原Langchain-ChatGLM）基于 Langchain 与 ChatGLM, Qwen 与 Llama 等语言模型的 RAG 与 Agent 应用 | Langchain-Chatchat (formerly langchain-ChatGLM), local knowledge based LLM (like ChatGLM, Qwen and Sep 1, 2023 · No milestone. I used the GitHub search to find a similar question and didn't find it. I am sure that this is a bug in LangChain rather than my code. Nov 3, 2023 · Fix for anyscale chat model api key (langchain-ai#12938) … 0899be7 * ChatAnyscale was missing coercion to SecretStr for anyscale api key * The model inherits from ChatOpenAI so it should not force the openai api key to be secret str until openai model has the same changes langchain-ai#12841 Nov 10, 2023 · This solution was suggested in a similar issue #6264 and received positive reactions. create_prompt method. This builds vectorstore. Run: python ingest_data. llm = ChatOpenAI(temperature=0) retriever_from_llm = RePhraseQueryRetriever. 9%. Please mention explicitly if it not meant of Windows. I leverage an awesome book, Machine Learning Yearning, from Andrew Ng to chat with the book. langchain-chat is an AI-driven Q&A system that leverages OpenAI's GPT-4 model and FAISS for efficient document indexing. ConversationalRetrievalChain cannot return source documents when using ConversationBufferWindowMemory: The suggested solution is to specify the output key as "answer" in the ConversationBufferMemory. zip -d Notion_DB. 6 KB. unzip Export-d3adfe0f-3131-4bf3-8987-a52017fc1bae. fromHandlers({ handleLLMNewToke Oct 11, 2023 · from langchain. Maintainer. Oct 10, 2023 · Hello Jack, The issue you're experiencing seems to be related to how the memory is being managed in your code. Chat History: {chat_history} Follow Up Input: {question} Standalone question:`; and Svelte Chat Langchain (Template) This is a minimal version of "Chat LangChain" implemented with SvelteKit, Vercel AI SDK and or course Langchain! The Template is held purposefully simple in its implementation while still beeing fully functional. Aug 4, 2023 · From what I understand, the issue you reported is related to the agent not recognizing the chat history. Feb 6, 2024 · Checked other resources I added a very descriptive title to this issue. 0. When i visit chat-langchain website it will provide result quickly however not its working its keep loading refer below image. Ingestion has the following steps: Create a vectorstore of embeddings, using LangChain's vectorstore wrapper (with OpenAI's embeddings and Weaviate's vectorstore). chat_models import ChatOpenAI from langchain. Covers the frontend, backend and everything in between. This seems to be a bug introduced in the 0. The stream is managed by a CallbackManager. agents import initialize_agent import os from dotenv import load_dotenv env_path = os. chains import ConversationalRetrievalChain, ConversationChain from langchain. as_retriever(), llm=llm. Note: Ensure that you have provided a valid Hugging Face API token in the . ch Apr 21, 2023 · Hi, @CreationLee!I'm Dosu, and I'm helping the LangChain team manage their backlog. You can also see some great examples of prompt engineering. vectorstores import Qdrant Concepts: A conceptual overview of the different components of Chat LangChain. You provided detailed system info, related components, reproduction steps, and the expected behavior. py file, but it appears that this is not the case in the baidu_qianfan_endpoint. A complete UI for an OpenAI powered Chatbot inspired by https://www. 2 participants. Question-Answering has the following steps: Given the chat history and new user input, determine what a standalone question would be using an LLM. adapter. prompts. LangGraph: A library for building robust and stateful multi-actor applications with LLMs by modeling steps as edges and nodes in a graph. chains import ConversationalRetrievalChain from langchain. zip file in your Downloads folder. 354), the GraphCypherQAChain class still does not have the return_source_documents parameter. ai. Step 2: Ingest your data. There have been similar import issues reported in the past, and the suggested solution was to update LangChain and llama-index to the latest versions and restart the Kernel on Jupyter Notebook. QianfanEndpoint in LangChain version 0. path Sep 22, 2023 · Yes, rewriting the chat history into a standalone question is probably your best bet. llms import OpenAI from langchain. 20, and keep the core, community, langchain and openai versions the same, this seems to work. It makes use of Nextjs streaming responses from the edge. llama-cpp-python repo for Llava loading PDF Chatting with Chroma DB : The app is tailored for both professional and academic uses, integrating Chroma DB as a vector database for efficient PDF interactions. query from a user and converting it into a query for a vectorstore. Waste of time. The Langchain library is used to process URLs and sitemaps, while MongoDB and FAISS handle data persistence and vector storage. 9 langchain==0. Inputs to the prompts are represented by e. Overview: LCEL and its benefits. OpenAI Chat Stream with Langchain and Nextjs. language) object. Here is the relevant code snippet for the bind_tools method: def bind_tools (. Here is a sample code snippet: May 30, 2023 · System Info Hi :) I tested the new callback stream handler FinalStreamingStdOutCallbackHandler and noticed an issue with it. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Development. llm = ChatOpenAI ( temperature=0, model="gpt-3. Chat LangChain 🦜🔗 Ask me anything about LangChain's Python documentation! Powered by How do I use a RecursiveUrlLoader to load content Mar 3, 2023 · For your example agent_chain. . zip file into this repository. If it is not built for windows, just mention it explicitly. Chat History: Human: My name is Talha. I copied the code from the documentation Dec 27, 2023 · However, these parameters do not directly affect the streaming process. Example code for an app that makes use of Langchains OpenAIChat. We call this bot Chat LangChain. self , New chat. utilities import GoogleSerperAPIWrapper from langchain. Goes over features like ingestion, vector stores, query analysis, etc. There are two components: ingestion and question-answering. retriever=vectorstore. AIMessage. The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package). venv\lib\site-packages\langchain\document_loaders\readthedocs. Makefile 84. With LangChain at its core, the application offers a chat interface that communicates with text files, leveraging the capabilities of OpenAI's language models. I wanted to let you know that we are marking this issue as stale. Mar 10, 2012 · I'm helping the LangChain team manage their backlog and am marking this issue as stale. from_llm() function not working with a chain_type of "map_reduce". if there is more than 1 output keys: use the relevant output key for the chain. import os from typing import Annotated, Literal, Sequence, TypedDict import weaviate from langchain_anthropic import ChatAnthropic from langchain_cohere import ChatCohere from langchain_community. callbacks. If rephrase_question is set to True, the new question is passed along. Modify: A guide on how to modify Chat LangChain for your own needs. create_prompt method instead of the ZeroShotAgent. from_llm(. I searched the LangChain documentation with the integrated search. 5 for natural language processing. The create_extraction_chain function is designed to work with specific language learning models (LLMs) and it seems like the Replicate model you're trying to use might not be fully compatible with it. encoders import jsonable_encoder from fastapi. LangChain provides a standard interface for memory, a collection of memory implementations, and examples of chains/agents that use memory. LangChain provides a standard interface for chains, lots of integrations with other tools No milestone. May 3, 2023 · I resolved this by manually storing and handling the chat history in a database (can use something like Zep if you want features, or any regular database can work) and using RetrievalQA like so: formatted_history = some code to convert the chat history into a string. Chat Saved searches Use saved searches to filter your results more quickly LangChain Prompts. Namespace: Each Record Manager is associated with a namespace. Jun 10, 2023 · > Entering new LLMChain chain Prompt after formatting: Given the following conversation and a follow up question, rephrase the follow up question to be a standalone question, in its original language. Question-Answering has the following steps: Given the chat history and new user input, determine what a standalone LangChain Expression Language (LCEL) LCEL is the foundation of many of LangChain's components, and is a declarative way to compose chains. I find viewing these makes it much easier to see what each chain is doing under the hood - and find new useful tools within the codebase. langchain-ChatGLM, local knowledge based ChatGLM with langchain ｜ 基于本地知识库的 ChatGLM 问答 - showsmall/langchain-ChatGLM Sep 15, 2023 · It seems like the SystemMessage type is not being recognized by the chat_models. dirname(os. Pass the standalone question and relevant documents to the model to generate and stream the final answer. Move the . In this project, the language model seamlessly connects to other data sources, enabling interaction with its environment and aligning with the principles of the LangChain framework. env file, as mentioned in step 3. Stream not working Description. Because the size of the raw documents usually exceed the maximum context window size of the model, we perform additional contextual compression steps to filter what we pass to the model. Example Code Step 2: Ingest your data. It is best used as reference to learn the basics of a QA chatbot over Documents or a starting point Jan 23, 2024 · 🤖. I can also see Update index action is failing i believe issue is with weaviate Jul 27, 2023 · The code that caused this warning is on line 48 of the file D:\demo\chat-langchain\. Also, I noticed that you're using LangChain version 0. responses import LangChain Chatbot: A Flask-based web application that integrates a Chatbot leveraging OpenAI's GPT-3. From what I understand, you opened this issue regarding the ConversationalRetrievalChain. Previous chats. prompts import PromptTemplate. I provided an explanation of how the 'stop' parameter is handled in the LangChain framework and suggested a modification to fix Aug 22, 2023 · System Info python==3. Apr 5, 2023 · Hi, @samuelwcm!I'm Dosu, and I'm here to help the LangChain team manage their backlog. Nov 4, 2023 · I'm helping the LangChain team manage our backlog and am marking this issue as stale. Cannot retrieve latest commit at this time. The BufferMemory in LangChainJS is not retaining the information from previous interactions because it's not being updated with the new interactions. Secondly, you can modify the prompt. The rephrase_question parameter determines whether the newly generated question (created by the question_generator chain) should be passed to the combine_docs_chain or not. The translate () method is used to prepare a translation operation on the doc object, setting the target Nov 2, 2023 · langchain-ai / chat-langchain Public. langchain_models import LangChainChat from langchain import ElasticV Jun 10, 2023 · Prompt after formatting: Given the following conversation and a follow up question, rephrase the follow up question to be a standalone question, in its original language. . text_splitter import RecursiveCharacterTextSplitter from langchain. The LangChain Record Manager API provides an interface for managing records in a database that tracks upserted documents before they are ingested into a vector store for LLM usage. {user_input}. ConversationalRetrievalChain uses condense_question_prompt to find the question. 5-turbo" ) May 26, 2024 · With LLaVA, the chat experience becomes more interactive and engaging, especially when it comes to handling and conversing about visual content. This is an experimental port of langchain( currently v0. 9, streaming: true, callbackManager: CallbackManager. From what I understand, the issue is about improving the performance of summarizing a question from chat history in a QA system using ConversationalRetrievalChain. env file in the following format: This will launch the chat UI, allowing you to interact with the Falcon LLM model using LangChain. Here is the user query: {question}""". /. @hwchase17. manager import AsyncCallbackManager from fastapi. Example Code Apr 2, 2023 · if the chain output has only one key memory will get the output by default. 👉 Give context to the chatbot using external datasources, chatGPT plugins and prompts. @classmethod. world, date & title only) and NASDAQ data (from Yahoo Finance) to chat with both datasets to figure out valuable insight. History. chat. The ConversationBufferMemory might not be returning the expected response due to a variety of reasons. You can add a condition to check if the input string contains "Human:" and stop the generation process if it does. from_template(general_system_template), # The `variable_name` here is what must align with memory MessagesPlaceh Jul 12, 2023 · Current Behavior This code follow the documentation step to add cache to ConversationalRetrievalChain with Langchain but it's not working properly from gptcache. I tried to work on SQL cutsom prompt, but it didn't work and is still giving the wrong sql queries . py. I'm an AI bot designed to help solve bugs, answer questions, and guide you in becoming a contributor while you're waiting for a human maintainer. Using your credentials, run the following commands to bootstrap the DB and a readonly user that the LLM will use to run generated queries: You can modify the last step to only give read access to certain tables, as well as allow insert/update access to specific tables, if desired. 316. vectorstores import Sep 26, 2023 · System Info CHAT_PROMPT = ChatPromptTemplate( messages=[ SystemMessagePromptTemplate. To get rid of this warning, pass the additional argument 'features="lxml"' to the BeautifulSoup constructor. Memory Key: To get relevant memory for the AI to recognize a follow-up question, you should use "chat-conversational-react-description" as the agent type and set the memoryKey to "chat_history". Its default prompt is CONDENSE_QUESTION_PROMPT. When exporting, make sure to select the Markdown & CSV format option. You're getting a RuntimeWarning that the coroutine 'AsyncCallbackManagerForLLMRun. Code. Integrates smoothly with LangChain, but can be used without it. Key Concepts. user_controller import UserController from langchain. cls, llm: BaseLanguageModel, retriever: BaseRetriever, Dec 8, 2023 · The execute () method in the context provided is being called on the doc. 👉 Dedicated API endpoint for each Chatbot. Chat History: {chat_history} Follow Up Input Jun 17, 2023 · I have fully working code for a chat model with OpenAI , Langchain, and NextJS const llm = new ChatOpenAI({ openAIApiKey: OPENAI_API_KEY, temperature: 0. I do not want to waste time. If it's not, there might be an issue with the URL or your internet connection. For subsequent conversation turns, we also rephrase the original query into a "standalone query" free of references to previous chat history. 291. This includes prompt management, prompt optimization, generic interface for all LLMs, and common utilities for working with LLMs. agents import AgentType from langchain. graph. Langchain-Chatchat Python 库现已发布至 Pypi，可通过 pip install langchain-chatchat 方式直接安装；. 🧠 Memory: Memory is the concept of persisting state between calls of a chain/agent. If you cannot find the answer from the pieces of context, just say that you don't know, don't try to make up an answer. py file in the langchain/agents/chat directory. js. memory import ConversationBufferMemory from langchain. Please note that this project is currently in the proof-of-concept stage, and is subject to change. tool_calls: an attribute on the AIMessage returned from the model for easily accessing the tool calls the model decided to make. Setup. A working LLamaCPP integration with langchain. Although, given that example, the on_tool_start and on_tool_end messages don't seem to be present in the 21, 20 or 19 releases for some reason. join(os. Apr 6, 2024 · I searched the LangChain documentation with the integrated search. When streaming events from the just the model everything works as expected, however when the model is wrapped within a RunnableWithMessageHistory, the output is no longer streamed and instead it does not produce 'on_llm_stream' events and instead outputs everything in the 'on_llm Nov 2, 2023 · 🤖. If the status code is 200, it means the URL is accessible. You mentioned that you tried different ways to set up the memory, but none of them worked. Running Locally: The steps to take to run Chat LangChain 100% locally. Hello @YikaiHu,. And the prompt is a basic HumanChatMessage. Hello, Thank you for reaching out and providing detailed information about the issue you're facing. In the context of LangChain, tools are defined as instances of the Tool class, which have a name, a function, and a description. here is some context: {context} Jul 19, 2023 · const question_generator_template = `Given the following conversation and a follow up question, rephrase the follow up question to be a standalone question. First, you'll need to create an empty Neon DB instance. If the URL is accessible but the size of the loaded documents is still zero, it could be that the documents at the URL are not in a format that the RecursiveUrlLoader can handle. have a look at this snipped from ConversationalRetrievalChain class. Spent lot of time on making this to work on Windows 11, still not working. 21 release. def from_llm(. CONDENSE_QUESTION_PROMPT = PromptTemplate. Nov 8, 2023 · > Entering new LLMChain chain Prompt after formatting: System: Answer the user question using the provided context and chat history. Manage code changes Aug 6, 2023 · from langchain. Here's the correct code: However, these solutions might not directly solve your problem as your issue seems to be a bit different. 3 participants. Langchain is used to manage the chat history and calls to OpenAI's chat completion. path. run("Hi") I suppose the agent should not use any tool. Contribute to samuelint/langchain-llamacpp-chat-model development by creating an account on GitHub. It allows you to efficiently insert, update, delete, and query records. agents import Tool from langchain. I've tried Ctransformers via Langchain with gpu_layers since AutoModelForCasualLM not working with Langchain def load_llm (model_path:str=None, model_name:str=None, model_file:str=None): if model_path is not None: llm = CTransformers (mode This endpoint can be edited in pages/api/chat. memory import ConversationBufferMemory # from langchain import OpenAI from langchain. Write better code with AI Code review. This will produce a . In explaining the architecture we'll touch on how to: Use the Indexing API to continuously sync a vector store to data sources. Here is the code : def process_user_input(user_input): create_db() in Given the chat history and new user input, determine what a standalone question would be using GPT-3. In this process, you strip out information that is not relevant for \. 替换原有 FastChat 模型推理框架，支持 Xinference、Ollama、One API 等多种模型推理与在线 API 框架的接入；. If you downgrade to 0. What is CNN? Every time I start with a langchain-repo I spend at least 2 days to get it to work. Sample requests included for learning and ease of use. No branches or pull requests. memory_key='chat_history', return_messages=True, output_key='answer'. This object is a result of the translate () method being called on a doc object, which is an instance of a Doctran document. prompt import PromptTemplate from langchain. Expected behaviour: For given prompt it should load data quicker. Jan 4, 2024 · This could be due to a design decision by the developers, or it could be a feature that has not yet been implemented in this version of LangChain. Files in this directory are treated as API routes instead of React pages. Here is the code snippet they used: tools , system_message=prefix + format_instructions. The SystemMessage type is indeed handled in the convert_message_to_dict function in the jinachat. Ali is my friend. chat-langchain. From what I understand, you reported an issue related to the Summarization chain batching not working with Replicate in the LangChain library. 1%. LangChain UI enables anyone to create and host chatbots using a no-code type of inteface. com. We're happy to introduce a more standardized interface for using tools: ChatModel. So conversational-react-description would look for the word {ai_prefix}: in the response, but when parsing the response it can not find it (and also there is no "Action"). The pages/api directory is mapped to /api/* . I leveraged CNBC news data (from data. Had the same problem with Opengpts in the past. pkl using OpenAI Embeddings and FAISS. the retrieval task. from_template("""Given the following conversation and a follow up question, rephrase the follow up question to be a standalone question. document_loaders Add your Hugging Face API token to the . agents import ConversationalChatAgent, Tool, AgentExecutor import pickle import os import datetime import logging # from controllers. Example Code Sep 4, 2023 · 🤖. 246 Who can help? @hwchase17 Information The official example notebooks/scripts My own modified scripts Related Components LLMs/Chat Models Embedding Models Prompts / Prompt Templates / Prompt Selec I searched the LangChain documentation with the integrated search. chat_with_pdf. for example in ConversationalRetrievalChain. Just checkedout and have this problem after starting chat: Apr 11, 2024 · on Apr 11. Given that standalone question, look up relevant documents from the vectorstore. Oct 26, 2023 · This returns the 'answer', 'question, and 'sources' nested in the 'output' key. Python 15. Sep 27, 2023 · In this post, we'll build a chatbot that answers questions about LangChain by indexing and searching through the Python docs and API reference. on_llm_new_token' was never awaited. LCEL was designed from day 1 to support putting prototypes in production, with no code changes, from the simplest “prompt + LLM” chain to the most complex chains. bind_tools(): a method for attaching tool definitions to model calls. base import AsyncCallbackHandler from langchain. py file. Without a valid token, the chat UI will not function properly. Weaviate Hybrid Search doesn't return source: You can specify the Oct 20, 2023 · The solution was to set verbose=False when instantiating the LLMchain. prompt = """some instructions. translate (language=self. Dec 16, 2023 · The user in this issue was able to resolve it by using the ConversationalChatAgent. LangChain supports this in a manner similar to what you propose. g. Some examples of prompts from the LangChain codebase. memory = ConversationBufferMemory(. Languages. Let's dive into this together! To resolve the issue with the bind_tools method in ChatHuggingFace from the LangChain library, ensure that the tools are correctly formatted and that the tool_choice parameter is properly handled. - ademarc/langchain-chat This could be the reason why the ChatOpenAI isn't working with chat memory. 3 days back it worked fine, now not sure why it's not woking. Run the following command to unzip the zip file (replace the Export with your own file name as needed). In the latest version of LangChain (v0. py ha wd qp um wj jr qb mb vp