基于相似阈值学习的台风路径分类方法

A typhoon tracks classification method based on similarity threshold learning

  • 摘要: 台风路径分类是分析台风特征的重要途径,同时也是判断台风影响区域和范围的重要方法。目前台风的分类研究主要采用主观识别和K-means聚类等方法,这些方法存在传统聚类算法产生的随机性问题和依赖人工经验设置模型参数的智能化问题,以及针对特定台风研究而导致的局限性问题。针对以上问题,本文提出一种基于相似阈值学习的台风路径分类方法,首先,提出基于密度质心的混合聚类算法,实现了热点区域挖掘,减少了传统方法的随机性;其次,提出基于fastDTW的自适应模体处理算法,实现了更为智能化的路径分类;最后,以登陆湛江的台风路径为例,展示并验证了混合聚类方法的分类效果。

     

    Abstract: The classification of typhoon tracks is an important way to analyze the characteristics of typhoons, and it is also an important method to judge the areas and ranges affected by typhoons. The main methods such as subjective identification and K-means clustering are applied to the research of typhoon classification. These methods have some problems such as randomness caused by traditional clustering algorithms, also rely on artificial experience to set model parameters and are not universal due to specific typhoon research. Aiming at the above problems, this paper proposes a typhoon tracks classification method based on similarity threshold learning. Firstly, a hybrid clustering algorithm based on density center of mass is proposed to realize hot-spot mining and reduce the randomness of traditional methods. Secondly, an adaptive motif processing algorithm based on fastDTW algorithms is proposed to realize more intelligent tracks classification. Finally, the typhoon track landing in Zhanjiang is taken as an example to demonstrate and verify the classification effect of this method.

     

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