SPOD() is a Matlab implementation of the frequency domain form of proper orthogonal decomposition (POD, also known as principle component analysis or Karhunen-Loève decomposition) called spectral ...
Vest A, Da Poian G, Li Q, Liu C, Nemati S, Shah A, Clifford GD, "An Open Source Benchmarked Toolbox for Cardiovascular Waveform and Interval Analysis", Physiological ...