计算机与现代化

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基于模式挖掘的中小河流暴雨洪水模式库

  

  1. (河海大学计算机与信息学院,江苏南京211100)
  • 收稿日期:2018-06-12 出版日期:2019-01-03 发布日期:2019-01-04
  • 作者简介:冯钧(1969-),女,江苏常州人,河海大学计算机与信息学院教授,CCF会员,博士,研究方向:时空数据管理,智能数据处理与数据挖掘,水利信息化; 郭涛(1993-),男,江苏南京人,硕士研究生,研究方向:数据挖掘,智能洪水预报; 陈志飞(1993-),女,江苏盐城人,硕士研究生,研究方向:数据挖掘。
  • 基金资助:
    国家重点研发计划项目(2017YFC0405806); 国家自然科学基金资助项目(61602151, 6137009)

Storm Flood Pattern Library in Middle and Small Rivers Based on Pattern Mining

  1. (College of Computer and Information, Hohai University, Nanjing 211100, China)
  • Received:2018-06-12 Online:2019-01-03 Published:2019-01-04

摘要: 传统神经网络预测方法在水文领域已经有较成功的应用,但对于一些资料匮乏地区进行洪水预报时,由于训练样本的缺失,模型参数难以满足要求,使用这些方法预报结果往往并不理想。本文提出构建适用于待预报流域的暴雨洪水模式库的新思想,对该流域历史水文数据进行符号化模式挖掘处理,然后通过分析频繁模式和洪水流量水文时间序列,完成中小河流暴雨洪水模式库构建。使用具有中小河流典型特征的昌化流域的历年水文数据进行实验,实验结果表明,采用本文模式挖掘方法构建中小河流暴雨洪水模式库,并利用模式库快速预报未来洪水流量过程线走势,具有准确性和流域适用性。

关键词: 模式库, 模式挖掘, 预测模型, 水文数据

Abstract: The traditional neural network prediction method has been applied successfully in the field of hydrology. However, when flood forecasting is carried out in some data deficient areas, because of the lack of training samples, the model parameters are difficult to meet the requirements, so the prediction results using these methods are often not satisfied. In this paper, a new idea of constructing storm flood pattern library applicable to the basin to be forecasted is proposed, and the historical hydrology data of the basin is excavated and processed in a symbolic mode. Then, by analyzing the hydrological time series of frequent patterns and flood flow, the construction of storm flood pattern library of small and medium-sized rivers is completed. The experimental results show that the model mining method in this paper is used to build the pattern library of the rainstorm flood in the middle and small rivers, and the pattern library is used to quickly forecast the trend of future flood flow process, which has the accuracy and applicability of the basin.

Key words:  pattern library, pattern miming, prediction model, hydrological data

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