Sabyasachi Saha

PERA-Tutor: A Personalized Explainable Retrieval-Augmented Tutor for Educational Question Answering

Retrieval-augmented generation (RAG) is attractive for educational question answering because external evidence can improve provenance, while learner models can adapt explanations to prior knowledge and misconceptions. However, apparent gains can be overstated when synthetic benchmarks leak topic labels or make unanswe...