计算机与现代化

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基于Holt-Winters的时间序列预测在大数据监控系统中的分析与应用

  

  1. (1.北京化工大学信息科学与技术学院,北京100029;2.北京石油化工学院信息工程学院,北京102617)
  • 收稿日期:2019-02-14 出版日期:2019-11-15 发布日期:2019-11-15
  • 作者简介:王宇飞(1992-),男,河南民权人,硕士研究生,研究方向:数据挖掘及工业互联网,E-mail: wyf0713@163.com; 杜天苍(1962-),男,北京人,教授,研究方向:计算机应用。

Analysis and Application of Time Series Prediction Based on  #br# Holt-Winters in Big Data Monitoring System

  1. (1. College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China;
    2. College of Information Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China)
  • Received:2019-02-14 Online:2019-11-15 Published:2019-11-15

摘要: 针对大数据监控系统对时间序列预测准确性和实时性的需求,以及大数据监控系统中时间序列呈现趋势性和季节性变化的特点,选择Holt-Winters算法建立时间序列预测模型。首先介绍时间序列的概念和特点,然后分析Holt-Winters算法的原理以及预测条件。选取合适的平滑系数是影响Holt-Winters算法预测准确性的关键,结合L-BFGS算法在不同时间区间求最优解,实现动态平滑系数的选取。最后以用户2天的页面访问量作为实验数据,通过相对误差指标的比较分析,验证该算法能满足大数据监控系统对时间序列预测的需求,具有较好的实际应用效果。

关键词: 时间序列, Holt-Winters, 大数据监控系统, 平滑系数

Abstract: According to the requirement of time series prediction accuracy and real-time and the trend and seasonal variation of time series in big data monitoring system, Holt-Winters algorithm is selected to build time series prediction model. First, this paper introduces the concept and characteristics of time series, then analyzes the principle of Holt-Winters algorithm and prediction conditions. Choosing the appropriate smoothing coefficient is the key to affect the accuracy of Holt-Winters algorithm. This paper introduces an algorithm for solving dynamic cubic smoothing coefficient in different time intervals by combining L-BFGS algorithm. Finally, the record of two-day page visits of users are used as experimental data. Through the analysis of relative error index, it is verified that the algorithm meets the requirements of big data monitoring system for time series prediction, and has better prediction application effect.

Key words: time series, Holt-Winters, big data monitoring system, smoothing coefficient

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