CrystaL: Spontaneous Emergence of Visual Latents in MLLMs

Fuente: arXiv
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Auteurs principaux: Zhang, Yang, Li, Danyang, Li, Yuxuan, Zhang, Xin, Xie, Tianyu, Cheng, Mingming, Li, Xiang
Format: Preprint
Publié: 2026
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author Zhang, Yang
Li, Danyang
Li, Yuxuan
Zhang, Xin
Xie, Tianyu
Cheng, Mingming
Li, Xiang
author_facet Zhang, Yang
Li, Danyang
Li, Yuxuan
Zhang, Xin
Xie, Tianyu
Cheng, Mingming
Li, Xiang
contents Multimodal Large Language Models (MLLMs) have achieved remarkable performance by integrating powerful language backbones with large-scale visual encoders. Among these, latent Chain-of-Thought (CoT) methods enable implicit reasoning in continuous hidden states, facilitating seamless vision-language integration and faster inference. However, existing heuristically predefined supervision signals in latent CoT provide limited guidance for preserving critical visual information in intermediate latent states. To address this limitation, we propose CrystaL (Crystallized Latent Reasoning), a single-stage framework with two paths to process intact and corrupted images, respectively. By explicitly aligning the attention patterns and prediction distributions across the two paths, CrystaL crystallizes latent representations into task-relevant visual semantics, without relying on auxiliary annotations or external modules. Extensive experiments on perception-intensive benchmarks demonstrate that CrystaL consistently outperforms state-of-the-art baselines, achieving substantial gains in fine-grained visual understanding while maintaining robust reasoning capabilities.
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id arxiv_https___arxiv_org_abs_2602_20980
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle CrystaL: Spontaneous Emergence of Visual Latents in MLLMs
Zhang, Yang
Li, Danyang
Li, Yuxuan
Zhang, Xin
Xie, Tianyu
Cheng, Mingming
Li, Xiang
Computer Vision and Pattern Recognition
Artificial Intelligence
Multimodal Large Language Models (MLLMs) have achieved remarkable performance by integrating powerful language backbones with large-scale visual encoders. Among these, latent Chain-of-Thought (CoT) methods enable implicit reasoning in continuous hidden states, facilitating seamless vision-language integration and faster inference. However, existing heuristically predefined supervision signals in latent CoT provide limited guidance for preserving critical visual information in intermediate latent states. To address this limitation, we propose CrystaL (Crystallized Latent Reasoning), a single-stage framework with two paths to process intact and corrupted images, respectively. By explicitly aligning the attention patterns and prediction distributions across the two paths, CrystaL crystallizes latent representations into task-relevant visual semantics, without relying on auxiliary annotations or external modules. Extensive experiments on perception-intensive benchmarks demonstrate that CrystaL consistently outperforms state-of-the-art baselines, achieving substantial gains in fine-grained visual understanding while maintaining robust reasoning capabilities.
title CrystaL: Spontaneous Emergence of Visual Latents in MLLMs
topic Computer Vision and Pattern Recognition
Artificial Intelligence
url https://arxiv.org/abs/2602.20980