A Comparison of DWT/PAA and DFT for Time Series Classification
Anthony J. Bagnall, Ian M. Whittley, Gareth J. Janacek, Kate Kemsley, Matthew Studley, Larry Bull · UWE Research Repository (UWE Bristol) · 2006
Discrete Fourier transforms (DFT) and Haar two, PAA is identical to a Haar Wavelet transformation [61. wavelets (DWT) were proposed for the use in time series data mining over five years ago and have since proved to be popular algorithms for the transformation and compression of time dependent data, particularly for strawman comparisons to new...