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I-Hung Hsu

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#artificial intelligence Preprint Oct 2026

Post-Training Frontier Text-to-Image Models by Composing Preference and Rubric Rewards

Recent text-to-image generation models have achieved remarkable visual quality, but improving them through post-training remains challenging because no single reward signal captures the full range of human preference. In this work, we develop a simple and effective post-training recipe for open-domain text-to-image gen...

Yuan-Hao Ban, I-Hung Hsu, A. Angelopoulos et al. · 0 citations
#machine learning Preprint Sep 2026

TwinICL: Diagnosing Multimodal In-Context Learning through Paired Counterfactuals

In-context learning (ICL) enables models to infer tasks from demonstrations, but existing benchmarks generally lack matched text and image versions needed to compare ICL performance across modalities. We introduce TwinICL, a procedurally generated benchmark providing such pairs for controlled comparison. Across six ope...

Zi-Han Xue, Po-Yi Lu, S. Honcharenko et al. · 0 citations
Jun 2026

Arena-T2I Hard: Benchmarking and Improving Faithfulness with Dependency-Aware Checklist

Faithfulness -- how precisely a generated image aligns with its prompt -- is increasingly central to the real-world utility of text-to-image (T2I) models. Existing faithfulness benchmarks, however, rely on simple atomic instructions, on which top-tier systems already achieve near-perfect scores. As T2I models enter cre...

Yuanhao Ban, Tong Xie, Sohyun An et al. · 0 citations

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