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Feature selection for time series prediction - A combined filter and wrapper approach for neural networks

机译:时间序列预测的特征选择-神经网络的组合过滤器和包装器方法

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摘要

Modelling artificial neural networks for accurate time series prediction poses multiple challenges, in particular specifying the network architecture in accordance with the underlying structure of the time series. The data generating processes may exhibit a variety of stochastic or deterministic time series patterns of single or multiple seasonality, trends and cycles, overlaid with pulses, level shifts and structural breaks, all depending on the discrete time frequency in which it is observed. For heterogeneous datasets of time series, such as the 2008 ESTSP competition, a universal methodology is required for automatic network specification across varying data patterns and time frequencies. We propose a fully data driven forecasting methodology that combines filter and wrapper approaches for feature selection, including automatic feature evaluation, construction and transformation. The methodology identifies time series patterns, creates and transforms explanatory variables and specifies multilayer perceptrons for heterogeneous sets of time series without expert intervention. Examples of the valid and reliable performance in comparison to established benchmark methods are shown for a set of synthetic time series and for the ESTSP’08 competition dataset, where the proposed methodology obtained second place.
机译:为精确的时间序列预测建模人工神经网络提出了多个挑战,尤其是根据时间序列的基础结构指定网络体系结构。数据生成过程可能会显示各种随机或确定性的时间序列,包括单个或多个季节,趋势和周期,并覆盖有脉冲,电平移动和结构中断,所有这些都取决于观察到的离散时间频率。对于时间序列的异构数据集(例如2008 ESTSP竞赛),需要一种通用的方法来跨变化的数据模式和时间频率进行自动网络规范。我们提出了一种完全数据驱动的预测方法,该方法结合了过滤器和包装器方法进行特征选择,包括自动特征评估,构造和转换。该方法可以识别时间序列模式,创建和转换解释变量,并为不同时间序列集指定多层感知器,而无需专家干预。对于一组综合时间序列和ESTSP’08竞赛数据集,显示了与已建立的基准方法相比有效和可靠的性能示例,其中建议的方法获得了第二名。

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  • 年度 2010
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  • 原文格式 PDF
  • 正文语种 {"code":"en","name":"English","id":9}
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