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Hao-Yu Wang

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Preprint Aug 2026

EchoWM: Open and Enterable Omnimodal World Models

EchoWM is an omnimodal world model for enterable generative media that responds to continuous navigation while jointly generating 720p video, environmental sound, music and speech, and maintains synchronized environmental sound and speech over long-horizon generation.

Song-Chun Zhang, Yao-Wei Li, Junhao Zhuang et al. · 10 citations · ⚡2

LC-QAT: Data-Efficient 2-Bit QAT for LLMs via Linear-Constrained Vector Quantization

LC-QAT is proposed, a 2-bit weight-only VQ-QAT framework that represents quantized weights via a learned affine mapping over discrete vectors, which yields a high-quality PTQ initialization and enables fully differentiable end-to-end optimization without explicit codebook lookup in the training forward pass.

Hao-Yu Wang, Xingyu Yu, Hai-Yan Zhao et al. · 2 citations
Preprint Sep 2026

Building Pretraining Data for World Models: An Unreal Engine-Based Pipeline for Action-Conditioned Video Generation

A large-scale synthetic data production pipeline built on Unreal Engine for generating action-conditioned, multi-view video, and describes the system architecture, the implementation decisions that emerged from production failures, and the limitations of using perceptual quality proxies for world-model data curation.

Hao-Yu Wang, Song-Chun Zhang, Hao-Ran Li et al. · 0 citations
Preprint Aug 2026

Long-Horizon Audio-Visual Generation for Persistent Stories and Interactive Worlds

Results indicate that memory, geometric control, and rollout-aware training provide a practical foundation for generating coherent stories and continuously evolving interactive worlds.

Nan Duan, Hao-Yang Huang, Wei-Yang Jin et al. · 4 citations · ⚡1

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