The latest articles on DEV Community by Parnab Sengupta (@aiguyparnab). https://dev.to/aiguyparnab https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3951327%2F498f15e7-92e2-446e-8562-7e7670f825c1.png https://dev.to/aiguyparnab en Parnab Sengupta Mon, 25 May 2026 19:57:52 +0000 https://dev.to/aiguyparnab/best-vector-database-tutorial-for-students-and-beginners-ia9 https://dev.to/aiguyparnab/best-vector-database-tutorial-for-students-and-beginners-ia9 <p>Vector databases are the core of modern AI systems. This is one of the most simplified tutorial on vector databases<a href="https://youtu.be/PYYMNIdfWWw?si=rHB1xDkxHOpSnqXi" rel="noopener noreferrer"></a></p> vectordatabase rag ai llm Parnab Sengupta Mon, 25 May 2026 19:54:44 +0000 https://dev.to/aiguyparnab/built-a-rag-chatbot-over-a-custom-knowledge-base-full-video-walkthrough-27lp https://dev.to/aiguyparnab/built-a-rag-chatbot-over-a-custom-knowledge-base-full-video-walkthrough-27lp <p>I built an AI bot using RAG that lets you talk to your own data, no fine-tuning, just plug in your knowledge base and get accurate, grounded answers. Full code walkthrough on my channel. Hope this helps.<a></a></p> ai rag llm python