Stochastic SIR/SEIR Modeling Stochastic SEIR with data‑augmentation MCMC to capture latent trajectories and uncertainty beyond deterministic ODEs. Interactive‑Constructive‑Active Learning Machine (ICALM) Prototype tutor that converts course materials into a concept knowledge graph (Neo4j + LLMs), logs learner paths, and grounds responses via graph‑RAG for traceable explanations. Reproducibility Study: Graph Attention Networks Reproduced core results, built Ray Tune pipelines, and studied attention interpretability & subgraph perturbations. Mining Cognitive Models from Text NLP synthesis for detecting metacognitive states (planning, confusion) to inform SRL‑oriented chatbot design. Recommender Systems at Scale (Bell) Two‑tower retrieval & Wide&Deep ranking; low‑latency inference; metric alignment & ethical constraints. GeoMate — AI for Accessibility EfficientDet‑based sidewalk‑obstacle detection; active‑learning to mitigate class imbalance for equitable navigation.