Matching sequences: Cross-spectral analysis of categorical time series
序列匹配:分类时间序列的交叉谱分析AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究平稳分类时间序列、交叉谱和快速傅里叶变换,直接支持时间序列方向,具体应用则是 DNA 序列匹配。
序列匹配:分类时间序列的交叉谱分析AI 解读 ↓
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We consider the problem of quantifying the degree to which two stationary categorical time series are coherent. The goal is to discover whether or not the sequences contain similar patterns. The problem is motivated by the problem of matching two DNA sequences. Following the ideas used in defining the spectral envelope for a qualitativevalued time series, the methods we present here focus on the problem of obtaining coherency envelopes for measuring the similarity between two categorical time series. Estimation is based on the fast Fourier transform so that the methods are computationally simple and fast, and can be applied to long sequences.