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» Genericity, Randomness, and Polynomial-Time Approximations
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PVLDB
2008
100views more  PVLDB 2008»
13 years 8 months ago
Efficiently approximating query optimizer plan diagrams
Given a parametrized n-dimensional SQL query template and a choice of query optimizer, a plan diagram is a color-coded pictorial enumeration of the execution plan choices of the o...
Atreyee Dey, Sourjya Bhaumik, Harish D., Jayant R....
COMPGEOM
2009
ACM
14 years 3 months ago
Epsilon nets and union complexity
We consider the following combinatorial problem: given a set of n objects (for example, disks in the plane, triangles), and an integer L ≥ 1, what is the size of the smallest su...
Kasturi R. Varadarajan
SPAA
2006
ACM
14 years 2 months ago
Playing push vs pull: models and algorithms for disseminating dynamic data in networks
Consider a network in which a collection of source nodes maintain and periodically update data objects for a collection of sink nodes, each of which periodically accesses the data...
R. C. Chakinala, Abishek Kumarasubramanian, Kofi A...
SPAA
2004
ACM
14 years 2 months ago
On achieving optimized capacity utilization in application overlay networks with multiple competing sessions
In this paper, we examine the problem of large-volume data dissemination via overlay networks. A natural way to maximize the throughput of an overlay multicast session is to split...
Yi Cui, Baochun Li, Klara Nahrstedt
DCOSS
2006
Springer
14 years 14 days ago
GIST: Group-Independent Spanning Tree for Data Aggregation in Dense Sensor Networks
Abstract. Today, there exist many algorithms and protocols for constructing agregation or dissemination trees for wireless sensor networks that are optimal (for different notions o...
Lujun Jia, Guevara Noubir, Rajmohan Rajaraman, Rav...