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arXiv 2407.20993q-bio.PE
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整合基于智能体的模型与分室模型用于传染病建模:一种新颖的混合方法

Integrating Agent-Based and Compartmental Models for Infectious Disease Modeling: A Novel Hybrid Approach

Inan Bostanci, Tim Conrad

AI总结:

本文提出一种空间耦合ABM与分室模型的新型混合方法,以平衡细粒度与计算效率,并通过同质和异质人群实验证明其能显著降低计算成本,同时强调模型等价性对混合方法的重要性。

摘要:

本研究探讨了基于智能体的模型(ABMs)与分室模型在传染病建模中的空间整合,提出了一种新颖的混合方法并考察其意义。ABMs通过模拟个体间的交互和决策提供详细洞见,但对大规模人群而言计算成本高昂。分室模型能更高效地捕捉群体层面的动态,但缺乏细粒度细节。我们开发了一个混合模型,旨在平衡ABMs的细粒度与分室模型的计算效率,从而在包括大规模人群在内的多种场景中提供对疾病传播更细致的理解。该模型通过将常微分方程模型与空间显式的ABM相结合,在空间上耦合离散群体和连续群体。我们的关键目标是系统评估不同配置下疾病动态的一致性和计算效率。为此,我们评估了两个实验场景,并通过空间分布改变每个子模型的影响。在第一个场景中,ABM组件模拟同质人群;在第二个场景中,它模拟具有景观驱动移动的异质人群。结果表明,该混合模型能显著降低计算成本,但对模型间差异敏感,这凸显了混合方法中模型等价性的重要性。代码可在以下地址获取:git.zib.de/ibostanc/hybrid_abm_ode

英文摘要:

This study investigates the spatial integration of agent-based models (ABMs) and compartmental models for infectious disease modeling, presenting a novel hybrid approach and examining its implications. ABMs offer detailed insights by simulating interactions and decisions among individuals but are computationally expensive for large populations. Compartmental models capture population-level dynamics more efficiently but lack granular detail. We developed a hybrid model that aims to balance the granularity of ABMs with the computational efficiency of compartmental models, offering a more nuanced understanding of disease spread in diverse scenarios, including large populations. This model spatially couples discrete and continuous populations by integrating an ordinary differential equation model with a spatially explicit ABM. Our key objectives were to systematically assess the consistency of disease dynamics and the computational efficiency across various configurations. For this, we evaluated two experimental scenarios and varied the influence of each sub-model via spatial distribution. In the first, the ABM component modeled a homogeneous population; in the second, it simulated a heterogeneous population with landscape-driven movement. Results show that the hybrid model can significantly reduce computational costs but is sensitive to between-model differences, highlighting the importance of model equivalence in hybrid approaches. The code is available at: git.zib.de/ibostanc/hybrid_abm_ode

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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