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RAG-Powered Question Answering with Cascading Retrieval Architecture

Production-ready hybrid search implementation combining dense and sparse retrieval for AI research paper queries

Comprehensive implementation of Retrieval Augmented Generation (RAG) using cascading retrieval patterns to query AI research papers from ArXiv. This refreshed notebook demonstrates the integration of Pinecone's vector database with OpenAI's language models to create a question-answering system that provides factually grounded responses backed by real academic sources.

Key Features

Cascading Retrieval Pattern: Implements sophisticated search architecture using both sparse and dense indexes for comprehensive information retrieval • Hybrid Search Implementation: Combines multiple retrieval strategies with intelligent reranking to optimize result relevance • Production-Ready Integration: Seamless connection between Pinecone vector database and OpenAI LLM APIs with proper error handling • Academic Research Focus: Specialized implementation for querying and synthesizing information from AI research papers

Technical Implementation

Demonstrates advanced RAG architecture by implementing cascading retrieval patterns that search across both sparse and dense vector indexes before applying reranking algorithms. The solution showcases proper prompt engineering techniques for connecting retrieval results to generative AI models, creating a complete pipeline from query processing to answer generation with source attribution.

Skills & Technologies

Retrieval Augmented Generation OpenAI GPT Pinecone Vector Database Hybrid Search Python Jupyter Notebooks Natural Language Processing Machine Learning AI Research
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Occasional notes on AI, coding agents, and where this is all headed — plus the very occasional origami diagram.

Arjun Kirti Patel
Chicago, IL · folded with care
© 2026 Arjun Kirti Patel · MIT Licensed