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AI 根据所提供的论文材料归类:摘要研究动态系统的常微分方程调控网络重建,未说明经济网络、干扰效应或所列因果推断设计,故不凭网络术语强行归类。

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关注这篇论文的作者
Praveen Niranda
Peter T. McKenney
Guifang Fu

增强因果全向网络重建:RECON

研究问题
如何从离散观测的动态状态轨迹重建时变调控网络,在规则密集和不规则稀疏采样中减少伪边,并解释调控方向、符号及强度?
方法与思路
作者采用基于积分的加性非参数常微分方程模型及数据驱动边选择,让节点轨迹与边效应随时间变化,并重建有向带符号加权网络。
材料陈述的贡献
摘要称五组模拟中 RECON 较 GRADE 减少伪边并保留真边,最困难情景的伪边由 239 条降至零,同时提供关键节点和拓扑解释。
阅读关注点
应核对调控边被解释为因果关系的条件、时变效应与边选择的估计方式、不规则采样要求,以及模拟比较中的模型和调参公平性。
阅读边界
这是 arXiv 预印本,同行评审或期刊接收未经核实;摘要未说明因果识别条件,特定模拟中的伪边减少不能证明普遍重建优势。

原文摘要

Learning a dynamical system and reconstructing the underlying regulatory network from $p$ discretely observed state trajectories remain challenging problems. Existing approaches often produced a large number of spurious edges and suffered from several methodological limitations. We propose a new approach, Reconstruction of Enhanced Causal Omnidirectional Network (RECON), that leverages an integral-based additive nonparametric ODE model to reconstruct regulatory networks from $p$ time-course data. RECON incorporates five methodological advances. First, it incorporates a new data-driven edge selection procedure that substantially reduces spurious edges while preserving true regulatory edges. Second, it reconstructs an omnidirectional network that captures causal regulatory relationships rather than merely statistical associations or noise artifacts. Third, it substantially broadens the applicability of standard ODE-based approaches by accommodating both dense regular and sparse irregular longitudinal sampling scenarios. Fourth, it models both node trajectories and edge regulatory effects as time-varying functions, emphasizing a dynamic regulatory network. Fifth, it reconstructs a signed and weighted regulatory network and provides comprehensive network interpretation through two-way direction, activatory/inhibitory indicator, and strength, together with keystone node identification and topological structure. Across five simulation studies, RECON consistently outperforms GRADE by removing nearly all spurious edges while retaining nearly all true regulatory edges, resulting in highly accurate network reconstruction. In the most challenging scenario, the number of spurious edges is reduced from 239 to 0.

笔记与分组