Figure 9

Partitioning real data onto a discrete symbol set. The median is determined form the original data. In this example, real variables are replaced by the symbol '0' if they are less than the median and by symbol '1' if they are greater than or equal to the median. The locations of medians are indicated by the horizontal red lines. Graphs in the left column show the real variable time series. The corresponding symbol sequences are shown in the right column.