一种多元台风时间序列的相似性度量方法

Similarity measure method of multiple typhoon time series

台风相似性度量方法的研究对防灾减灾、辅助决策等具有重要意义,台风相似性的研究大多集中在台风路径的相似性度量上。首先,梳理影响台风相似性度量的多个要素,提出了基于多元时间序列的台风数据描述方法;其次,提出了台风时间序列完整性、一致性评估与修复方法;最后,针对台风时间序列的不等长问题,设计了一种基于主成分分析和动态时间弯曲距离的相似性度量方法。通过实验验证,该方法能够实现台风相似性的有效度量。

The research on similarity measure of typhoon is significant to disaster prevention and auxiliary decision-making.At present,the similarity researches on typhoon mostly focused on the similarity measure of path.First,this paper combed the elements of similarity measure of typhoon and used multivariate time series to describe the typhoon due to the space-time and multi-factor characteristics of it.Second,it proposed a method to measure and repair integrity and consistency of typhoon time series.Finally,in the view of unequal length of typhoon time series,this paper designed a method of similarity measure based on principal component analysis and weighted dynamic time warping distance.Through the experiment,this method can realize effective similarity measure of typhoon.