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» Tight Bounds for Graph Problems in Insertion Streams
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LICS
2008
IEEE
15 years 4 months ago
Reachability Games and Game Semantics: Comparing Nondeterministic Programs
We investigate the notions of may- and mustapproximation in Erratic Idealized Algol (a nondeterministic extension of Idealized Algol), and give explicit characterizations of both ...
Andrzej S. Murawski
FOCS
2005
IEEE
15 years 3 months ago
Metric Embeddings with Relaxed Guarantees
We consider the problem of embedding finite metrics with slack: we seek to produce embeddings with small dimension and distortion while allowing a (small) constant fraction of al...
Ittai Abraham, Yair Bartal, Hubert T.-H. Chan, Ked...
PODC
2011
ACM
14 years 20 days ago
Structuring unreliable radio networks
In this paper we study the problem of building a connected dominating set with constant degree (CCDS) in the dual graph radio network model [4,9,10]. This model includes two types...
Keren Censor-Hillel, Seth Gilbert, Fabian Kuhn, Na...
SPAA
2004
ACM
15 years 3 months ago
The effect of faults on network expansion
We study the problem of how resilient networks are to node faults. Specifically, we investigate the question of how many faults a network can sustain and still contain a large (i...
Amitabha Bagchi, Ankur Bhargava, Amitabh Chaudhary...
FOCS
2008
IEEE
15 years 4 months ago
Beating the Random Ordering is Hard: Inapproximability of Maximum Acyclic Subgraph
We prove that approximating the Max Acyclic Subgraph problem within a factor better than 1/2 is Unique-Games hard. Specifically, for every constant ε > 0 the following holds:...
Venkatesan Guruswami, Rajsekar Manokaran, Prasad R...