Author

Tongxuan Liu

2 papers indexed here

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Preprint Aug 2026

PosterText: Towards Unified Visual Text Generation and Editing for E-commerce Poster

This work proposes PosterText, a unified model trained with a four-stage curriculum, including text rendering pretraining, instruction-following training, reinforcement learning for preference alignment, and spatial guidance self-distillation for execution refinement that achieves competitive performance against existi...

Xiao-An Liu, Li-Chen Ma, Zipeng Guo et al. · 1 citation

#artificial intelligence Mar 2026

HISA: Efficient Hierarchical Indexing for Fine-Grained Sparse Attention

This work proposes HISA (Hierarchical Indexed Sparse Attention), a plug-and-play replacement for the indexer that rewrites the search path from a flat token scan into a two-stage hierarchical procedure: a block-level coarse filtering stage that scores pooled block representations to discard irrelevant regions, followed...

Yufei Xu, Fan-Xu Meng, Fan Jiang et al. · arXiv.org · 10 citations · ⚡1