B. Yakir, A LOWER-BOUND ON THE ARL TO DETECTION OF A CHANGE WITH A PROBABILITY CONSTRAINT ON FALSE ALARM, Annals of statistics, 24(1), 1996, pp. 431-435
An inequality that relates the probability of false alarm of a change-
point detection policy to its average run length to detection is prove
d. By means of this inequality, a lower bound on the rate of detection
, when the change occurs after a long delay, is derived.