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Constructing High Dimensional Feature Space for Time Series Classification

机译:构建用于时间序列分类的高维特征空间

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The paper investigates a generic method of time series classification that is invariant to transformations of time axis. The state-of-art methods widely use Dynamic Time Warping (DTW) with One-Nearest-Neighbor (INN). We use DTW to transform time axis of each signal in order to decrease the Euclidean distance between signals from the same class. The predictive accuracy of an algorithm that learns from a heterogeneous set of features extracted from signals is analyzed. Feature selection is used to filter out irrelevant predictors and a serial ensemble of decision trees is used for classification. We simulate a dataset for providing a better insight into the algorithm. We also compare our method to DTW+1NN on several publicly available datasets.
机译:本文调查了一般的时间序列分类方法,其不变于转换时间轴。最先进的方法广泛使用与第一邻居(INN)的动态时间翘曲(DTW)。我们使用DTW来转换每个信号的时间轴,以减小来自同一类的信号之间的欧几里德距离。分析了从信号中提取的异构特征集中学习的算法的预测准确性。特征选择用于过滤掉无关的预测器,并且决策树的串行集合用于分类。我们模拟数据集以提供更好地了解算法。我们还将我们的方法与DTW + 1NN进行了比较了几个公开的数据集。

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