statistical measure S-time-distance is generalized to complement
conventional measures in time series comparisons.
The time perspective, which no doubt exists in human perception
when comparing different situations, is systematically introduced
in comparative analysis both as a concept and as a quantifiable
measure. Existing methods of comparative analysis do not take
into account that, in addition to the disparity (difference,
distance) in an indicator at a given point in time, in principle
there exist a theoretically equally universal disparity (difference,
distance) in time when a certain level of the indicator is attained
by the two compared units. The novel statistical measure S-time-distance
measures the distance (proximity) in time between the points
in time when the two series compared reach a specified level
of the indicator X.