发表机构
University of Florida; Oak Ridge National Laboratory（佛罗里达大学; 橡树岭国家实验室）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对降阶科学孪生体，提出感知QoI的临时展开与回溯协调方法，通过能量匹配修正历史，在间隙S=8时大幅降低误差，提升科学相关属性。
AI 中文摘要
科学孪生体在权威主系统的更新暂时不可用时可能需要继续运行。同步恢复后，新边界也可用于修正中间历史。我们区分出可立即获取的因果临时轨迹与延迟的、面向未来的协调轨迹。对于降阶孪生体，我们提出一种基于确定性校准的协调方法：一条平滑时间桥将下一个同步块处的残差沿临时区间反向传递；随后的解析能量匹配阶段应用平滑区域增益与全局重缩放，以匹配在间隙两侧同步帧的对数能量空间中通过三次回归估计得到的分量能量轨迹。该方法无需额外修正网络，可在不改变后续展开所用隐状态的前提下修正解码历史。我们对来自16个JHTDB各向同性湍流切片的64个空间斑块（涵盖两个速度分量，间隙S取{4,6,8}）进行评估。在最长间隙下，场误差与梯度敏感的QoI误差以显著不同的速率下降，因此仅场误差无法表征临时保真度。当S=8时，完全协调使两个分量的窗口平均NRMSE降低约60%，vx的全局梯度强度误差从4.21%降至2.91%，而面向未来的物理插值在同一指标上达到20.40%。能量匹配还使协调后的历史与其边界推断的全局能量轨迹完全匹配。因此，在评估范围内，未来边界信息可显著提升与科学相关的属性。
英文摘要
Scientific twins may need to continue operating when updates from an authoritative primary system are temporarily unavailable. Once synchronization resumes, the new boundary can also be used to revise the intervening history. We distinguish an immediately available causal provisional trajectory from a delayed, future-conditioned reconciled trajectory. For reduced-state twins, we introduce a deterministic, calibration-based reconciliation method. A smooth temporal bridge carries the residual observed at the next synchronization block backward through the provisional interval. An analytic energy-matching stage then applies smooth regional gains and a global rescaling to match a component-energy trajectory estimated by cubic regression in log-energy space from synchronized frames on both sides of the gap. The method uses no additional correction network and revises decoded history without changing the latent state used for later rollouts. We evaluate 64 spatial patches from 16 JHTDB isotropic-turbulence slices for both velocity components and gaps S in {4, 6, 8}. During the longest gap, field error and gradient-sensitive QoI error degrade at markedly different rates, so field error alone does not characterize provisional fidelity. At S = 8, full reconciliation reduces window-averaged NRMSE by about 60% for both components and global gradient-intensity error from 4.21% to 2.91% for vx, whereas future-aware physical interpolation reaches 20.40% on the same metric. Energy matching additionally makes the reconciled history match its boundary-inferred global energy trajectory exactly. Future boundary information therefore substantially improves scientifically relevant properties within the evaluated regime.
Comments10 pages, 4 figures, 4 tables
