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» Competitive Online Approximation of the Optimal Search Ratio
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ESA
2004
Springer
98views Algorithms» more  ESA 2004»
13 years 10 months ago
Competitive Online Approximation of the Optimal Search Ratio
How efficiently can we search an unknown environment for a goal in unknown position? How much would it help if the environment were known? We answer these questions for simple poly...
Rudolf Fleischer, Thomas Kamphans, Rolf Klein, Elm...
SODA
2012
ACM
240views Algorithms» more  SODA 2012»
11 years 7 months ago
Simultaneous approximations for adversarial and stochastic online budgeted allocation
Motivated by online ad allocation, we study the problem of simultaneous approximations for the adversarial and stochastic online budgeted allocation problem. This problem consists...
Vahab S. Mirrokni, Shayan Oveis Gharan, Morteza Za...
FOCS
2004
IEEE
13 years 8 months ago
Dynamic Optimality -- Almost
We present an O(lg lg n)-competitive online binary search tree, improving upon the best previous (trivial) competitive ratio of O(lg n). This is the first major progress on Sleator...
Erik D. Demaine, Dion Harmon, John Iacono, Mihai P...
SIGECOM
2011
ACM
232views ECommerce» more  SIGECOM 2011»
12 years 7 months ago
Near optimal online algorithms and fast approximation algorithms for resource allocation problems
We present algorithms for a class of resource allocation problems both in the online setting with stochastic input and in the offline setting. This class of problems contains man...
Nikhil R. Devanur, Kamal Jain, Balasubramanian Siv...
TALG
2010
101views more  TALG 2010»
13 years 3 months ago
Reasoning about online algorithms with weighted automata
We describe an automata-theoretic approach for the competitive analysis of online algorithms. Our approach is based on weighted automata, which assign to each input word a cost in...
Benjamin Aminof, Orna Kupferman, Robby Lampert