Lluna: graph-based unimodal collaboration fixes missing-modality inference failures

williammary · hf · 2026-10-16

Researchers from William & Mary, CMU, Microsoft and UChicago show that multimodal collaboration among unimodal models can weaken or even reverse when modalities go missing. Lluna combines a direct private prediction path from adapted unimodal features with a graph-based residual collaboration branch, plus Progressive Collaboration Consistency training. Across 8 datasets spanning affective computing, scene understanding and medical prediction, Lluna achieves the best average performance evaluated.

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