Author

Amy Zhang

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#machine learning Preprint Oct 2026

Test-time Multi-agent Coordination by Decomposed Value Gradient Flow

Offline multi-agent reinforcement learning (MARL) faces a persistent trade-off. Expressive generative policies can represent multi-modal coordination in the data, but cannot distinguish high-value regions, while value-optimized policies exploit the learned Q-function but collapse the multi-modal into a single dominant...

Dong-Su Lee, Hao-Ran Xu, Amy Zhang · 0 citations

#artificial intelligence May 2025

Multi-Modal Language Models as Text-to-Image Model Evaluators

MT2IE is presented, an evaluation framework in which a single multimodal large language model (MLLM) acts as an evaluator agent, iteratively generating the evaluation prompts and scoring the resulting images, showing that MT2IE's image-text consistency scores have higher correlation with human judgment than metrics pre...

Jiahui Chen, Candace Ross, Reyhane Askari-Hemmat et al. · arXiv.org · 4 citations · ⚡1