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cs.IR2026
ExplainRoute: A Pre-Deployment Audit Framework for Non-Answer-Giving Programming Tutors
Yiming Gai, Yingying Zhang, Xuefei Huang
Programming tutors should support learners' own explanations rather than immediately providing model answers. We present ExplainRoute, a pre-deployment audit framework for non-answ…
cs.IR2026
Modality Relevance is not Modality Utility: Post-hoc Selective Modality Escalation for Cost-Aware Multimodal RAG
Xue Li, Yiming Gai
Multimodal retrieval-augmented generation (RAG) grounds a generator in evidence drawn from heterogeneous modalities -- text, tables, and images. The dominant deployment choice is b…