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Ray Lyons
VP of Product & Engineering at eSpark who led product strategy for LLM-driven features and coordinated technical decisions around RAG, embeddings, and eval practices.
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Sep 25, 2025
• 1h 9min
Inside eSpark’s AI Teacher Assistant: RAG, Evals, and Real Classroom Needs
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Thom van der Doef, Principal Product Designer at eSpark, and Ray Lyons, VP of Product & Engineering, dive into the fascinating development of the AI Teacher Assistant. They discuss the evolution from a chatbot interface to a structured workflow tailored for educators. Key insights include how retrieval augmented generation (RAG) and refined metadata are optimizing the assistant's performance, plus lessons learned in semantic versus keyword search. They also explore future enhancements using student data for personalized recommendations, aiming to bridge teacher mandates with real classroom needs.
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