arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1004.4774cond-mat.stat-mechnlin.AOphysics.data-an
收藏

小世界网络上OFC模型的极端事件预测

Prediction of extreme events in the OFC model on a small world network

Filippo Caruso, Holger Kantz

摘要:

本文研究了小世界拓扑上耗散Olami-Feder-Christensen模型中极端事件的可预报性。由于自组织临界性的机制,如果系统具有无限大的规模,则不可能在已知先前事件的情况下预测下一事件的大小。然而,通过利用有限尺寸效应,我们表明,概率预测的极端事件发生在下一个时间步是可能的,在一个有限的系统。特别是,系统的有限性必然导致极端事件的排斥性时间相关性。对于更大的量级和更大的复杂网络规模,这些的可预测性更高。最后,我们表明,我们的预测分析也是强大的显着减少用于构建最佳预测的事件的可访问数量。

英文摘要:

We investigate the predictability of extreme events in a dissipative Olami-Feder-Christensen model on a small world topology. Due to the mechanism of self-organized criticality, it is impossible to predict the magnitude of the next event knowing previous ones, if the system has an infinite size. However, by exploiting the finite size effects, we show that probabilistic predictions of the occurrence of extreme events in the next time step are possible in a finite system. In particular, the finiteness of the system unavoidably leads to repulsive temporal correlations of extreme events. The predictability of those is higher for larger magnitudes and for larger complex network sizes. Finally, we show that our prediction analysis is also robust by remarkably reducing the accessible number of events used to construct the optimal predictor.

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。

↑