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English(EN) Physical-State-Guided Diffusion Sampling for Full-Waveform Inversion

新的PSG方法利用扩散模型增强地震反演

研究人员开发了一种名为物理状态引导扩散采样(PSG)的新方法,以改进用于地下速度估计的全波形反演(FWI)。PSG通过高斯桥将持久的物理速度与扩散先验耦合,并通过波形拟合来精炼物理状态。该方法分离了波动方程和去噪器梯度,从而实现了更好的初始化和优化历史。PSG在各种OpenFWI系列上展示了优于现有方法的性能,即使在存在噪声或不完整地震数据的情况下,并且在Marmousi、Overthrust和BP2004 Salt等大型模型中成功恢复了复杂的地质结构,无需重新训练。 AI

影响 该方法有望提高资源勘探和地质研究的地下成像精度和效率。

排序理由 该集群包含一篇详细介绍地震数据分析新方法的学术论文。[lever_c_demoted from research: ic=1 ai=1.0]

在 arXiv cs.LG 阅读 →

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新的PSG方法利用扩散模型增强地震反演

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该集群包含一篇详细介绍地震数据分析新方法的学术论文。[lever_c_demoted from research: ic=1 ai=1.0]
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报道来源 [1]

  1. arXiv cs.LG TIER_1 English(EN) · Chen Min, Haowen Jiang, Zheng Ma, Xiongbin Yan ·

    物理状态引导的全波形反演扩散采样

    arXiv:2609.12899v1 Announce Type: new Abstract: Full waveform inversion (FWI) estimates subsurface velocity from seismic recordings, but its ill-posedness and nonlinearity make accurate reconstruction strongly dependent on initialization and prior information. Diffusion posterior…