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APPROX
2007
Springer
137views Algorithms» more  APPROX 2007»
14 years 1 months ago
A Knapsack Secretary Problem with Applications
We consider situations in which a decision-maker with a fixed budget faces a sequence of options, each with a cost and a value, and must select a subset of them online so as to ma...
Moshe Babaioff, Nicole Immorlica, David Kempe, Rob...
SOFSEM
2007
Springer
14 years 1 months ago
Competitive Maintenance of Minimum Spanning Trees in Dynamic Graphs
Abstract. We consider the problem of maintaining a minimum spanning tree within a graph with dynamically changing edge weights. An online algorithm is confronted with an input sequ...
Miroslaw Dynia, Miroslaw Korzeniowski, Jaroslaw Ku...
FOCS
2006
IEEE
14 years 1 months ago
Better lossless condensers through derandomized curve samplers
Lossless condensers are unbalanced expander graphs, with expansion close to optimal. Equivalently, they may be viewed as functions that use a short random seed to map a source on ...
Amnon Ta-Shma, Christopher Umans
WIDM
2004
ACM
14 years 1 months ago
Probabilistic models for focused web crawling
A Focused crawler must use information gleaned from previously crawled page sequences to estimate the relevance of a newly seen URL. Therefore, good performance depends on powerfu...
Hongyu Liu, Evangelos E. Milios, Jeannette Janssen
ICALP
2004
Springer
14 years 1 months ago
Group Spreading: A Protocol for Provably Secure Distributed Name Service
In order to enable communication between a dynamic collection of peers with given ID’s, such as “machine.cs.school.edu”, over the Internet, a distributed name service must b...
Baruch Awerbuch, Christian Scheideler