本文将构建一个混合RAG系统，并行使用FAISS语义检索与BM25关键词检索，通过互惠排名融合（RRF）合并结果，以兼顾理解力与精确度。借助LangGraph编排流程、Streamlit实现可视化界面，支持切换检索模式并透明展示检索块与得分，有效解决单一检索器的失效问题。

MCP Server（Model Context Protocol 服务器）是让 AI 模型调用外部工具与数据的标准化接口，由 Anthropic 于 2024 年底开源后迅速成为行业标准。截至 2026 年 4 月，Python SDK 在 PyPI 的月下载量已突破 1.64 亿次，公开目录收录的 MCP 服务器超过 20,000 个，OpenAI、Google、Microsoft 相继采纳同 ...

# you may not use this file except in compliance with the License. # You may obtain a copy of the License at # http://www.apache.org/licenses/LICENSE-2.0 ...

EPA approved guidance allowing diesel manufacturers to replace urea quality sensors with NOx sensors in DEF systems. The agency said faulty DEF sensors are a significant source of warranty claims and ...

The U.S. Environmental Protection Agency on Friday said it is dropping the requirement for diesel exhaust fluid (DEF) sensors as part of a truck's aftertreatment system in favor of monitoring actual ...

The Environmental Protection Agency continues its crusade to roll back truck emission regulations. The latest move is a doubling down in its efforts to reform diesel exhaust fluid (DEF) rules. For ...

GM pickups powered by a Duramax diesel engine offer loads of benefits, including strong low-end torque and impressive real-world efficiency. However, diesel engines also require some specialized ...

In case you've faced some hurdles solving the clue, Def!, we've got the answer for you. Crossword puzzles offer a fantastic opportunity to engage your mind, enjoy leisure time, and test your knowledge ...

On this date in 1999, Brooklyn lyricist, actor, and social activist Yasiin Bey—who the Hip Hop world first knew as Mos Def—released his debut solo album Black On Both Sides on the Rawkus/Columbia ...

Functions are the building blocks of Python programs. They let you write reusable code, reduce duplication, and make projects easier to maintain. In this guide, we’ll walk through all the ways you can ...