用参数自适应网络提升科学模拟数据的时序插值与流场估计
HyperFLINT: Hypernetwork-based Flow Estimation and Temporal Interpolation for Scientific Ensemble Visualization
- 通过超网络动态生成模型权重,融合模拟参数实现条件化建模
- 在多个科学数据集上显著优于传统无参数方法的插值与流场预测精度
- 适合需要探索复杂参数空间的气候、流体等科学仿真研究者
我们提出HyperFLINT(基于超网络的流场估计与时间插值),一种新型深度学习方法,用于估计时空科学集合数据中的流场、进行标量场的时间插值,并支持参数空间探索。该工作解决了传统方法忽略集合参数的问题,导致难以适应不同模拟场景且无法揭示数据动态的痛点。HyperFLINT引入超网络,显式建模模拟参数,使模型能根据不同条件动态调整,生成各时间步的准确插值结果和流场,优于现有无参数方法。其架构采用含卷积与反卷积层的模块化神经块,由超网络生成主网络权重,更精准捕捉复杂模拟动态。一系列实验表明,HyperFLINT在流场估计与时间插值任务中性能显著提升,并具备推动参数空间探索的潜力,为复杂科学集合数据提供深入洞察。
原文摘要 · Abstract (English)
We present HyperFLINT (Hypernetwork-based FLow estimation and temporal INTerpolation), a novel deep learning-based approach for estimating flow fields, temporally interpolating scalar fields, and facilitating parameter space exploration in spatio-temporal scientific ensemble data. This work addresses the critical need to explicitly incorporate ensemble parameters into the learning process, as traditional methods often neglect these, limiting their ability to adapt to diverse simulation settings and provide meaningful insights into the data dynamics. HyperFLINT introduces a hypernetwork to account for simulation parameters, enabling it to generate accurate interpolations and flow fields for each timestep by dynamically adapting to varying conditions, thereby outperforming existing parameter-agnostic approaches. The architecture features modular neural blocks with convolutional and deconvolutional layers, supported by a hypernetwork that generates weights for the main network, allowing the model to better capture intricate simulation dynamics. A series of experiments demonstrates HyperFLINT's significantly improved performance in flow field estimation and temporal interpolation, as well as its potential in enabling parameter space exploration, offering valuable insights into complex scientific ensembles.
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