寻找地震相关区域的词频共现分析方法

A method of co-occurrence frequency analysis to find out correlations among earthquake areas

地震的地区相关性反映出一定地理位置上地震发生的规律性,寻找中国震区之间的相关性规律可以提前预测地震发生的区域。以中国历史地震灾害数据库为平台搭建共现分析模型,首先将地震区域以熟知地名进行划分,在此基础上改进原有Salton模型,提出一种基于修正Salton指数的共现分析方法,使用修正后的共现分析方法求解地震区域间的关联度。实验表明,该修正Salton模型能更准确地反映关联度。

Correlations among earthquake areas reflect the regularity of earthquakes happening in cer- tain areas. Looking for correlations among earthquakes can forecast the earthquake areas before the dis- aster comes. Based on DCHED （Database of Chinese Historical Earthquake Disasters）, co-occurrence a- nalysis model is established. Firstly, earthquake areas are divided according to the well-known names. Secondly, the traditional Salton model is improved. And, based on the improved Salton index, a method of co-occurrence analysis is proposed in order to solve problems of correlations among earthquake areas. Finally, experiments are performed to prove that the improved Salton model can reflect correlations a- mong earthquake areas more accurately.