Author

Nirhoshan Sivaroopan

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Preprint Jul 2026

RAG-HAR+: Towards Cost-Efficient LLM-Based Human Activity Recognition for Edge Deployment

This work introduces RAG-HAR+, a retrieval-first and cost-optimized extension that strengthens retrieval while reducing dependence on LLM-based inference, and extends the RAG-HAR mobile prototype to demonstrate the practical feasibility of retrieval-first, LLM-assisted HAR in mobile sensing scenarios.

Hansi Karunarathna, Nirhoshan Sivaroopan, Chamara Madarasingha et al. · 0 citations