与controller不同的是,controller通常处于view和model中间,而langchain的控制流程处于chain与chain之间,也就是将多个LLM串起来的中间连接部分。 这种chain的方式,在langchain中,我们可以选择用 if else 控制,也可以选择 LCEL(langchan expression language,langchain表达语言)。使用LCEL时,控制逻辑发生在LLM的输出层之前,...
Langchain 是一个旨在简化构建端到端语言模型应用的框架。它提供了丰富的构建块,如模型、提示、数据检索、记忆、链和代理,使开发者能够高效地利用大型语言模型(LLMs)实现各种复杂的任务。 安装与配置 要开始使用 Langchain,首先确保安装了最新版本的框架及其相关组件。以下步骤指导你完成安装过程: 安装: pip install...
langchain-core: Base abstractions and LangChain Expression Language. Integration packages (e.g.langchain-openai,langchain-anthropic, etc.): Important integrations have been split into lightweight packages that are co-maintained by the LangChain team and the integration developers. langchain: Chains, ...
LangChain integrates with many providers. Integration Packages These providers have standalonelangchain-{provider}packages for improved versioning, dependency management and testing. ProviderPackageDownloadsLatestJS Airbytelangchain-airbyte ❌ Anthropiclangchain-anthropic ...
Step 2: Addlangchain-rust Then, you can addlangchain-rustto your Rust project. cargo add langchain-rust sqlite-vss Download additional sqlite_vss libraries fromhttps://github.com/asg017/sqlite-vss cargo add langchain-rust --features sqlite-vss ...
Step 2: Addlangchain-rust Then, you can addlangchain-rustto your Rust project. Simple install cargo add langchain-rust cargo add langchain-rust --features sqlite Download additional sqlite_vss libraries fromhttps://github.com/asg017/sqlite-vss ...
This will help you get started with OpenAI embedding models using LangChain. For detailed documentation on OpenAIEmbeddings features and configuration options, please refer to the API reference.
%pip install --upgrade --quiet langchain-core langchain-google-vertexaiNote: you may need to restart the kernel to use updated packages.Usage VertexAI supports all LLM functionality. from langchain_google_vertexai import VertexAI# To use modelmodel = VertexAI(model_name="gemini-pro")NOTE...
This highlights functionality that is core to using LangChain. How to: return structured data from an LLM How to: use a chat model to call tools How to: stream runnables How to: debug your LLM apps LangChain Expression Language is a way to create arbitrary custom chains. It is built on...
LangChain integrates with many providers. Partner Packages These providers have standalone @langchain/{provider} packages for improved versioning, dependency management and testing. Anthropic Azure OpenAI Cloudflare Cohere Exa Google GenAI Google VertexAI Google VertexAI Web Groq MistralAI MongoDB Nomi...