Building a RAG System from Scratch — Design Decisions Explained

📰 Dev.to · Hiroki Kameyama

Learn to build a RAG system from scratch and understand the design decisions behind it, crucial for AI engineers and researchers working with retrieval-augmented generation models

advanced Published 27 Jun 2026
Action Steps
  1. Design a RAG pipeline from scratch using popular libraries like Hugging Face Transformers and PyTorch
  2. Implement a retrieval mechanism to fetch relevant documents from a knowledge base
  3. Build a generation model to produce coherent and context-specific text based on the retrieved documents
  4. Configure and fine-tune the model using a suitable dataset and hyperparameters
  5. Test and evaluate the performance of the RAG system using metrics like perplexity and ROUGE score
Who Needs to Know This

AI engineers, researchers, and developers working on NLP projects can benefit from understanding the design decisions and implementation details of a RAG system, enabling them to build more efficient and effective models

Key Insight

💡 Understanding the design decisions and implementation details of a RAG system is crucial for building efficient and effective retrieval-augmented generation models

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🤖 Build a RAG system from scratch and learn the design decisions behind it! 📚

Key Takeaways

Learn to build a RAG system from scratch and understand the design decisions behind it, crucial for AI engineers and researchers working with retrieval-augmented generation models

Full Article

In the previous article, we built a working RAG pipeline. Now let's step back and ask why we made...
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