Megow, Nicole; Schulz, Andreas S. - 2003
-line algorithms, which are (4+epsilon)-competitive in either case. Our preemptive algorithm is 2-competitive, which actually meets the … competitive ratio of the currently best randomized on-line algorithm for this scenario. Our nonpreemptive algorithm has a … competitive ratio of 3.28. Both results are characterized by a surprisingly simple analysis; moreover, the preemptive algorithm …