Let the cost of applying EM algorithm for a given bucket be f and let the average number of buckets for a given projection be b. Then the running time of the Exit-point method will be O(cbf) where c is a constant that is linear in l-the length of the motif. If there were m projections, then cost of the random projection algorithm using restarts will be O(mbf). The two main advantages of using Exit-point strategy compared to random projection algorithm are :