OnlineMin: A Fast Strongly Competitive Randomized Paging Algorithm
نویسندگان
چکیده
منابع مشابه
Improved Space Bounds for Strongly Competitive Randomized Paging Algorithms
Paging is a prominent problem in the field of online algorithms. While in the deterministic setting there exist simple and efficient strongly competitive algorithms, in the randomized setting a tradeoff between competitiveness and memory is still not settled. In this paper we address the conjecture in [2], that there exist strongly competitive randomized paging algorithms using o(k) bookmarks, ...
متن کاملFinely-Competitive Paging
We construct an online algorithm for paging that achieves an O(r + log k) competitive ratio when compared to an offline strategy that is allowed the additional ability to “rent” pages at a cost of 1=r. In contrast, the competitive ratio of the Marking algorithm for this scenario is O(r log k). Our algorithm can be thought of in the standard setting as having a “fine-grained” competitive ratio, ...
متن کاملCompetitive Paging Algorithms
*Department of Computer Science, Tel Aviv University, Tel Aviv, Israel 69978; ‘Department of Electrical Engineetig and Computer Science, Computer Science Division, University of California, Berkeley, CA 94720; ‘Department of Computer Science, University of Toronto, Toronto, Ontario, Canada M6C 3B7; ‘Department of Mathematics and Computer Science, Amherst College, Amherst, Massachusetts 01002; “...
متن کاملCompetitive Paging Algorithms AMOS FIAT
The paging problem is that of deciding which pages to keep in a memory of k pages in order to minimize the number of page faults. We develop the marking algorithm, a randomized on-line algorithm for the paging problem. We prove that its expected cost on any sequence of requests is within a factor of 2Hk of optimum. (Where Hk is the kth harmonic number, which is roughly Ink.) The best such facto...
متن کاملHeat & Dump: Competitive Distributed Paging
This paper gives a randomized competitive distributed paging algorithm called Heat & Dump. The competitive ratio is logarithmic in the total storage capacity of the network, this is optimal to within a constant factor. This is in contrast to the linear optimal deterministic competitive ratio BFR].
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Theory of Computing Systems
سال: 2012
ISSN: 1432-4350,1433-0490
DOI: 10.1007/s00224-012-9427-y