Topological Data Analysis (TDA) for Time Series
Authors: Nalini Ravishanker, Renjie Chen
Abstract: The study of topology is strictly speaking, a topic in pure mathematics. However in only a few years, Topological Data Analysis (TDA), which refers to methods of utilizing topological features in data (such as connected components, tunnels, voids, etc.) has gained considerable momentum. More recently, TDA is being used to understand time series. This article provides a review of TDA for time series, with examples using R functions. Features derived from TDA are useful in classification and clustering of time series and in detecting breaks in patterns.
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