Amortized efficiency of list update and paging rules
Communications of the ACM
Competitive solutions for online financial problems
ACM Computing Surveys (CSUR)
Online computation and competitive analysis
Online computation and competitive analysis
Ski rental with two general options
Information Processing Letters
Hi-index | 0.89 |
We introduce the continuously compounded interest rate into a generalized ski-rental problem with two options: either pay some rental proportionally to the usage time (the rent option), or buy the equipment and then pay some reduced rental proportionally to the usage time (the generalized buy option). Under the framework of competitive analysis, a randomized algorithm for the modified model is constructed and then is proved optimal by Yao@?s Lemma, and thus the optimal competitive ratio is obtained. The result shows that the introduction of the interest rate puts off the optimal purchase date and diminishes the uncertainty involved in the decision making.