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Long Xing

4 accepted papers

2026

CapRL: Stimulating Dense Image Caption Capabilities via Reinforcement Learning

ICLR 2026poster

Image captioning is a fundamental task that bridges the visual and linguistic domains, playing a critical role in pre-training Large Vision-Language Models (LVLMs). Current state-of-the-art captioning models are typically trained with Supervised Fine-Tuning (SFT), a paradigm that relies on expensive…

Cited by 0SourceScholar
2026

ScaleCap: Scalable Image Captioning via Dual-Modality Debiasing

ICLR 2026poster

This paper presents ScaleCap, a scalable image captioning strategy that generates comprehensive and detailed image captions. The key challenges of high-quality image captioning lie in the inherent biases of LVLMs: multimodal bias resulting in imbalanced descriptive granularity, offering detailed acc…

Cited by 0SourcecodeScholar
2026

Spatial-SSRL: Enhancing Spatial Understanding via Self-Supervised Reinforcement Learning

CVPR 2026

Spatial understanding remains a weakness of Large Vision-Language Models (LVLMs). Existing supervised fine-tuning (SFT) and recent reinforcement learning with verifiable rewards (RLVR) pipelines depend on costly supervision, specialized tools, or constrained environments that limit scale. We introdu

Cited by 0SourcecodeScholar
2025

Conical Visual Concentration for Efficient Large Vision-Language Models

CVPR 2025poster

In large vision-language models (LVLMs), images serve as inputs that carry a wealth of information. As the idiom "A picture is worth a thousand words" implies, representing a single image in current LVLMs can require hundreds or even thousands of tokens. This results in significant computational cos…