年变提取及预测评估软件

Annual variation extraction and prediction evaluation software (EQSuite-EVA V1.0)

Language

• English
• 中文

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English

Annual variation anomalies in time series data exhibit certain universality prior to earthquakes. To address such phenomena, this software primarily constructs a new information extraction workflow based on the S-transform time-frequency method. Compared with conventional approaches, it can avoid issues encountered in normal annual variation background fitting while additionally enabling simultaneous analysis of the evolutionary process of background annual variation signals (ANA) alongside extracting conventional short-period annual variation anomalies (ONA). Furthermore, based on a bidirectional asymmetric threshold strategy combined with R-value scoring and Molchan diagram method, a quantitative methodology has been established for determining prediction indicators and conducting efficacy evaluation. The expanded threshold parameter space and inclusion of more evaluation parameters make indicator selection and efficacy assessment more reasonable.

Development platform: Windows10/Matlab

Target industry/field: Earthquake prediction

How to run: Execute Main_ST_ANN_evaluationNew.m in MATLAB

For specific details, refer to the technical document Liu_Qi.pdf

Last updated: 2022-3-1

Author: Liu Qi

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中文

时序数据中的破年变异常在地震前具有一定普遍性，针对该类现象本软件主要基于S变换时频方法构建了新的信息提取流程，相较于常规方法，一方面可避免正常年变背景拟合所碰到的问题，另一方面除了提取出常规短周期破年变信号（ONA）外还可以同时分析背景年变信号（ANA）的演化过程。在此基础上，基于双向非对称阈值策略，结合R值评分及Molchan图表法构建了预测指标确定和效能评估的一套定量方法，由于阈值参数空间的拓宽和更多评估参数的引入，使得指标选取和效能评估更为合理。

研发平台： Windows10/Matlab

面向行业/领域： 地震预测

运行方式：在matlab中执行Main_ST_ANN_evaluationNew.m

具体可参考技术文档-刘琦.pdf

最后更新时间： 2022-3-1

作者：刘琦

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