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The ETAS model is widely employed to model the spatio-temporal distribution of earthquakes, generally using spatially invariant parameters. We propose an efficient method for the estimation of spatially varying parameters, using the…

地球物理 · 物理学 2017-06-28 Shyam Nandan , Guy Ouillon , Stefan Wiemer , Didier Sornette

We study the seismicity (global seismic activity) that occurred in Greece between 1976 and 2009 based on the dataset reported in Makropoulos et al., 2012, using concepts of Non-extensive Statistical Physics. By considering the entire and…

混沌动力学 · 物理学 2015-06-19 Chris G. Antonopoulos , George Michas , Filippos Vallianatos , Tassos Bountis

Seizure forecasting using machine learning is possible, but the performance is far from ideal, as indicated by many false predictions and low specificity. Here, we examine false and missing alarms of two algorithms on long-term datasets to…

The paper by Taroni et al. (2016) considers results of forward prediction of Italian strong earthquakes by CN algorithm with the declared intent of providing "a careful assessment of CN prediction performances... using standard testing…

地球物理 · 物理学 2017-02-07 G. Molchan , A. Peresan , G. F. Panza , L. Romashkova , V. Kossobokov

In this study, a novel machine learning approach was used to classify three types of synoptic weather events in Taiwan area from 2001 to 2010. We used reanalysis data with three machine learning algorithms to recognize weather systems and…

大气与海洋物理 · 物理学 2019-05-22 Shih-Hao Su , Jung-Lien Chu , Ting-Shuo Yo , Lee-Yaw Lin

As part of an effort to develop a systematic methodology for earthquake forecasting, we use a simple model of seismicity based on interacting events which may trigger a cascade of earthquakes, known as the Epidemic-Type Aftershock Sequence…

统计力学 · 物理学 2015-06-24 A. Helmstetter , D. Sornette

Ito stochastic differential equation governs one-dimensional diffusive Markov process. Geoelectrical signals measured in seismic areas can be considered as the result of competitive and collective interactions among system elements. The Ito…

数据分析、统计与概率 · 物理学 2015-05-27 Zbigniew Czechowski , Luciano Telesca

We develop and implement a new type of global earthquake forecast. Our forecast is a perturbation on a smoothed seismicity (Relative Intensity) spatial forecast combined with a temporal time-averaged (Poisson) forecast. A variety of…

地球物理 · 物理学 2013-07-23 James R Holliday , William R Graves , John B Rundle , Donald L Turcotte

A new index for high-impact weather forecasting is introduced and assessed in comparison with the well-established extreme forecast index (EFI). Two other ensemble summary statistics are also included in this comparison study: the…

应用统计 · 统计学 2023-12-05 Zied Ben-Bouallegue

In many applied fields, the prediction of more severe events than those already recorded is crucial for safeguarding against potential future calamities. What-if analyses, which evaluate hypothetical scenarios up to the worst-case event,…

统计方法学 · 统计学 2025-04-08 Simone A. Padoan , Stefano Rizzelli

We propose a new method to test the effectiveness of a spatial point process forecast based on a log-likelihood score for predicted point density and the information gain for events that actually occurred in the test period. The method…

数据分析、统计与概率 · 物理学 2010-11-24 Yan Y. Kagan

A prominent feature of earthquakes is their empirical laws including memory (clustering) in time and space. Several earthquake forecasting models, like the EpidemicType Aftershock Sequence (ETAS) model, were developed based on earthquake…

地球物理 · 物理学 2020-03-30 Yongwen Zhang , Dong Zhou , Jingfang Fan , Warner Marzocchi , Yosef Ashkenazy , Shlomo Havlin

We present results from a comparative analysis of empirical and synthetic shapes for isoseismals of low intensity (I = IV-VI on the MCS scale) for six Italian earthquakes of ML = 4.5-6. Our modelling of isoseismals is based on a plane…

地球物理 · 物理学 2010-07-06 G. M. Molchan , T. L. Kronrod , G. F. Panza

This paper proposes a machine learning method based on the Extra Trees (ET) algorithm for forecasting Significant Wave Heights in oceanic waters. To derive multiple features from the CDIP buoys, which make point measurements, we first…

大气与海洋物理 · 物理学 2021-07-15 Pujan Pokhrel

We evaluate the forecasting performance of a deep learning model, originally introduced as a pattern-extraction framework, that operates on the spatiotemporal evolution of seismic b-values in a short-term forecasting context. Model output…

地球物理 · 物理学 2026-03-04 Jonas Köhler , Wei Li , Johannes Faber , Georg Rümpker , Nishtha Srivastava

Machine learning is becoming increasingly important in scientific and technological progress, due to its ability to create models that describe complex data and generalize well. The wealth of publicly-available seismic data nowadays…

地球物理 · 物理学 2020-08-10 Fabrizio Magrini , Dario Jozinović , Fabio Cammarano , Alberto Michelini , Lapo Boschi

Research on Knowledge Tracing (KT) models traditionally focuses on improving predictive accuracy. However, responsible real-world deployment requires models to know when to defer uncertain predictions to a human teacher. We introduce an…

机器学习 · 计算机科学 2026-05-04 Joshua Mitton , Prarthana Bhattacharyya , Ralph Abboud , Simon Woodhead

Post-disaster inspections are critical to emergency management after earthquakes. The availability of data on the condition of civil infrastructure immediately after an earthquake is of great importance for emergency management.…

信号处理 · 电气工程与系统科学 2020-09-25 Xiao Liang , Seyed Omid Sajedi

Recently a likelihood-based methodology has been developed by the Collaboratory for the Study of Earthquake Predictability (CSEP) with a view to testing and ranking seismicity models. We analyze this approach from the standpoint of possible…

地球物理 · 物理学 2011-08-19 George Molchan

We investigate the potential added value of running three limited-area ensemble systems (with the WRF, Meso-NH and MOLOCH models and a grid spacing of approximately 2.5 km) for two heavy-precipitation events in Italy. Such high-resolution…

大气与海洋物理 · 物理学 2021-03-23 Valerio Capecchi