Bridging the Semantic-Utility Gap in Multimodal RAG via Generator-in-the-Loop Alignment

arXiv:2609.08188 · cs.AI, cs.IR · Submitted 2026-09-08 · Read on arXiv

cs.AI, cs.IR

Submitted: 2026-09-08

Updated: 2026-09-08

Comments: Submitted to IEEE Transactions on Artificial Intelligence

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Alignment — 5× in this paper · explained in 1 episode
• RAG — 2× in this paper · explained in 3 episodes
• Adaptation — 1× in this paper · explained in 1 episode
• Direct Preference Optimization (DPO) — 1× in this paper · explained in 9 episodes
• Fine-Tuning — 1× in this paper · explained in 5 episodes
• Loss Function — 1× in this paper · explained in 2 episodes
• Low-Rank Adaptation (LoRA) — 1× in this paper · explained in 9 episodes
• Modality Gap — 1× in this paper · explained in 4 episodes
• Retrieval-Augmented Generation (RAG) — 1× in this paper · explained in 16 episodes
• Semantic Similarity — 1× in this paper · explained in 2 episodes
• Supervised Fine-Tuning (SFT) — 1× in this paper · explained in 8 episodes
• Vision-Language Models (VLMs) — 1× in this paper · explained in 6 episodes

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