# AdaState：用于流式视频生成的自我演化锚点

- 来源：HuggingFace Daily Papers（社区热门论文）
- 发布时间：2026-05-28 08:00
- AIHOT 分数：61
- AIHOT 链接：https://aihot.virxact.com/items/cmpqd5x5l03y5slnoh9avuwp3
- 原文链接：https://arxiv.org/abs/2605.30349

## AI 摘要

自回归视频扩散模型通过序列生成帧来制作流式视频。其当前方法因固定锚定于第一帧，导致注意力缓存中的关键值表示占据特权位置，使生成的视频动态性不足、场景进展迟缓，呈现时间上的浅薄性。为此，AdaState 方法引入一个可自我演化的自适应状态来替代固定锚点。该状态是一个隐藏潜变量，模型在每个生成块中将其与内容一起去噪，但不进行渲染。模型通过同时关注前一状态和当前内容来生成场景锚点，使参考点随内容演化。这一设计将时间视为相对概念，为生成过程引入了循环性。实验证明，该自适应状态显著提升了视频动态性，能实现更丰富的运动和自然的场景进展。

## 正文

Autoregressive video diffusion models generate streaming video by producing frames sequentially, conditioning each chunk on previously generated content. These models are structurally anchored to the first frame: its key-value representation occupies a privileged position in the attention cache and serves as the primary scene reference throughout generation. As the cleanest and most error-free position in the cache, this anchor draws disproportionate attention, suppressing video dynamics, and locking scene composition to the initial viewpoint even as the scene naturally evolves. The result is a temporally shallow video in which motion, camera movement, and scene progression are dampened in favor of static consistency. To address this, we replace the static anchor with an adaptive state, a hidden latent that the model denoises alongside content at every chunk but never renders. Rather than referencing a frozen first frame, the model generates its own scene anchor at each step by attending to both the previous state and the current content, producing a reference that evolves with the generated content. Unlike standard video generation, which encodes an absolute notion of time, our formulation treats time as relative: every generation step sees the same positional structure regardless of how far generation has progressed, and the state transition is identical at every chunk. Together, these properties introduce a recurrence into the generation process, where denoising serves as the transition function, and the KV cache serves as the carrier, requiring no external module. Experiments demonstrate that the adaptive state substantially improves video dynamics, enabling richer motion and natural scene progression within generated videos.