Fig. 1: How Foote novelty works: a simple example.
From: On revolutions

Top. A univariate time series. Middle. A distance matrix of the time series overlain by the Foote novelty kernel. In the distance matrix, higher values are coloured lighter. The 2 × 2 matrix marked with a blue box delimits the FN kernel and shows the natural checkerboard structure of distances at points of rapid change. Bottom. The Foote novelty values, showing a peak in the middle at the point of maximum change in the series, \({F}_{4}^{2}\), also colored blue.