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WorldSimBench: Towards Video Generation Models as World Simulators (2410.18072v1)

Published 23 Oct 2024 in cs.CV

Abstract: Recent advancements in predictive models have demonstrated exceptional capabilities in predicting the future state of objects and scenes. However, the lack of categorization based on inherent characteristics continues to hinder the progress of predictive model development. Additionally, existing benchmarks are unable to effectively evaluate higher-capability, highly embodied predictive models from an embodied perspective. In this work, we classify the functionalities of predictive models into a hierarchy and take the first step in evaluating World Simulators by proposing a dual evaluation framework called WorldSimBench. WorldSimBench includes Explicit Perceptual Evaluation and Implicit Manipulative Evaluation, encompassing human preference assessments from the visual perspective and action-level evaluations in embodied tasks, covering three representative embodied scenarios: Open-Ended Embodied Environment, Autonomous, Driving, and Robot Manipulation. In the Explicit Perceptual Evaluation, we introduce the HF-Embodied Dataset, a video assessment dataset based on fine-grained human feedback, which we use to train a Human Preference Evaluator that aligns with human perception and explicitly assesses the visual fidelity of World Simulators. In the Implicit Manipulative Evaluation, we assess the video-action consistency of World Simulators by evaluating whether the generated situation-aware video can be accurately translated into the correct control signals in dynamic environments. Our comprehensive evaluation offers key insights that can drive further innovation in video generation models, positioning World Simulators as a pivotal advancement toward embodied artificial intelligence.

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Insightful Overview of "WorldSimBench: Towards Video Generation Models as World Simulators"

The article titled "WorldSimBench: Towards Video Generation Models as World Simulators" presents a novel dual evaluation framework for predictive models, focusing on their capacity to simulate real-world environments through video generation. Recognizing the sophisticated capabilities of modern predictive models, the authors aim to systematically classify these models and evaluate their performance as World Simulators using a newly proposed benchmark, WorldSimBench.

Core Contributions and Hierarchical Model Classification

The paper discusses the limitation of existing benchmarks in adequately assessing the distinctive abilities of higher-capacity predictive models. To address this, the authors categorize predictive models into a hierarchical system, ranging from text-based predictions (S_0) to actionable video generation (S_3), the latter representing the World Simulators. A defining aspect of World Simulators is their ability to generate actionable videos that integrate robust 3D scene understanding and adherence to physical rules, making them a crucial component for advancing embodied AI.

Evaluation Framework: WorldSimBench

WorldSimBench evaluates World Simulators through a dual approach:

  1. Explicit Perceptual Evaluation: This dimension focuses on assessing the visual quality and fidelity of the generated videos through a Human Preference Evaluator. The evaluator is trained using the HF-Embodied Dataset, which is enriched with human feedback across various dimensions and scenarios, namely 80C2AE, C280B5, and C2AE80. Evaluation criteria include visual quality, instruction alignment, and embodiment, ensuring a comprehensive assessment of the model’s visual output.
  2. Implicit Manipulative Evaluation: In this dimension, the emphasis is on translating generated videos into actionable control signals within dynamic environments. This closed-loop evaluation reflects the World Simulator's potential to drive autonomous decisions effectively.

Strong Numerical Results and Observations

The experiments conducted using WorldSimBench cover a variety of video generation models, evaluated across three significant scenarios. The use of detailed evaluation metrics for both visual and action levels allows for nuanced insights into model capabilities. Notably, models like Open-Sora-Plan have shown superior performance in both trajectory generation and instruction alignment, demonstrating the framework's efficacy in distinguishing the strengths and weaknesses of current models.

Implications and Future Developments in AI

The introduction of the WorldSimBench framework signifies a pivotal step toward the deeper integration of video generation with embodied cognition in AI. By providing precise evaluation tools and datasets, the paper not only sets a foundation for improving video generation models but also opens new avenues for developing AI agents capable of sophisticated, real-world interaction.

Furthermore, the implicit evaluation strategy emphasizing actionability aligns with the future landscape of AI, where agents are expected to navigate and adapt to complex environments by processing unstructured data into structured actions. This advancement has implications for fields such as robotics, autonomous driving, and interactive gaming, where the seamless integration of perceptual quality and real-time decision-making is vital.

Conclusion

"WorldSimBench: Towards Video Generation Models as World Simulators" introduces a thorough and methodologically sound approach to evaluating predictive models from an embodied perspective. The paper sets the stage for future enhancements in World Simulators, urging researchers to consider both perceptual and manipulative dimensions of video generation. As AI systems continue to evolve, the insights provided by this research will likely influence subsequent developments in embodied intelligence, driving innovation in autonomous systems capable of complex task execution in dynamic environments.

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Authors (13)
  1. Yiran Qin (18 papers)
  2. Zhelun Shi (9 papers)
  3. Jiwen Yu (18 papers)
  4. Xijun Wang (64 papers)
  5. Enshen Zhou (7 papers)
  6. Lijun Li (30 papers)
  7. Zhenfei Yin (41 papers)
  8. Xihui Liu (92 papers)
  9. Lu Sheng (63 papers)
  10. Jing Shao (109 papers)
  11. Lei Bai (154 papers)
  12. Wanli Ouyang (358 papers)
  13. Ruimao Zhang (84 papers)
Citations (161)
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