Spectral Analysis for Categorical Time Series: Scaling and the Spectral Envelope
类别时间序列的谱分析:赋值与谱包络AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究类别时间序列的频域、谐波与谱分析,直接对应时间序列方向。
类别时间序列的谱分析:赋值与谱包络AI 解读 ↓
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Many studies produce categorical time series in which harmonic analysis is of interest. Although there exist time domain approaches for the analysis of categorical time series such as Markov chains or link function based regression models, there is apparently little statistical theory or methodology for analyzing qualitative-valued time series in the frequency domain. The purpose of this paper is to initiate the development of a general framework for the frequency domain analysis of categorical time series. In doing so, we discuss the scaling of categorical time series and introduce a new concept that we call the spectral envelope of a categorical time series. We demonstrate our methodology on a data set from a problem in molecular biology.