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CORR
2012
Springer
249views Education» more  CORR 2012»
12 years 28 days ago
Computing Cartograms with Optimal Complexity
We show how to compute cartograms with worst-case optimal polygonal complexity. Specifically we study rectilinear duals which are side-contact representations of a planar graph G ...
Md. Jawaherul Alam, Therese C. Biedl, Stefan Felsn...
INFOCOM
2012
IEEE
11 years 7 months ago
SybilDefender: Defend against sybil attacks in large social networks
—Distributed systems without trusted identities are particularly vulnerable to sybil attacks, where an adversary creates multiple bogus identities to compromise the running of th...
Wei Wei, Fengyuan Xu, Chiu Chiang Tan, Qun Li
PODC
2012
ACM
11 years 7 months ago
On the (limited) power of non-equivocation
In recent years, there have been a few proposals to add a small amount of trusted hardware at each replica in a Byzantine fault tolerant system to cut back replication factors. Th...
Allen Clement, Flavio Junqueira, Aniket Kate, Rodr...
SDM
2012
SIAM
247views Data Mining» more  SDM 2012»
11 years 7 months ago
Image Mining of Historical Manuscripts to Establish Provenance
he recent digitization of more than twenty million books has been led by initiatives from countries wishing to preserve their cultural heritage and by commercial endeavors, such a...
Bing Hu, Thanawin Rakthanmanon, Bilson J. L. Campa...
ICALP
2011
Springer
12 years 8 months ago
Improved Approximation for the Directed Spanner Problem
We present an O( √ n log n)-approximation algorithm for the problem of finding the sparsest spanner of a given directed graph G on n vertices. A spanner of a graph is a sparse ...
Piotr Berman, Arnab Bhattacharyya, Konstantin Maka...