FIGURE 4.

Searching for best matching location between the shapelet S (red) and the segment T (black). Shapelet is translated (shifted) along T from the start to the end, step by step (point by point). At each location we measure the distance D between S and the corresponding chunk (sub-segment) of the whole segment T, which we generically denote with T’. The length of T’ is always equal to the length of S. In this illustration the best matching location of T’ is shown, where the distance D is minimal. This minimal distance D is then taken as the distance δ between S and T.