# RAG optimisation + Reranking Day 1 Lecture

> In this video, Zach discusses the concepts of vectors and RAG. He emphasizes the importance of identifying business problems suitable for AI, noting that AI is not a self-starter and requires specific trigger points to deliver value. Zach explores various interfaces beyond chatbots, such as CICD an…

- Web page: https://www.dataexpert.io/lesson/rag-optimisation-reranking-day1-lecture-oct-2025-p737-l1510
- Program: [AIExpert](https://www.dataexpert.io/program/ai-expert)
- Module: Week 2: Advanced RAG, Reranking & Dev Workflow
- Access: Requires enrollment in AIExpert
- Length: 49 min video
- Skills: NLP, LLMs, APIs, Problem Solving, CI/CD
- Academy: DataExpert.io Academy

## About this lesson

In this video, Zach discusses the concepts of vectors and RAG. He emphasizes the importance of identifying business problems suitable for AI, noting that AI is not a self-starter and requires specific trigger points to deliver value. Zach explores various interfaces beyond chatbots, such as CICD and cron jobs, and explains how these can enhance performance and relevance in RAG systems. Additionally, he outlines strategies for improving vector search performance and making RAG outputs more relevant.

## Navigation

- Previous lesson: [Building functional AI agents using LangChain Day2 Lab](https://www.dataexpert.io/lesson/buildingfunctionalaiagentsusinglangchainday2lab-mar26-p737-l2140.md)
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