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JC
2007
130views more  JC 2007»
14 years 9 months ago
On the complexity of deciding connectedness and computing Betti numbers of a complex algebraic variety
We extend the lower bounds on the complexity of computing Betti numbers proved in [6] to complex algebraic varieties. More precisely, we first prove that the problem of deciding ...
Peter Scheiblechner
STOC
2012
ACM
221views Algorithms» more  STOC 2012»
13 years 4 days ago
From query complexity to computational complexity
We consider submodular optimization problems, and provide a general way of translating oracle inapproximability results arising from the symmetry gap technique to computational co...
Shahar Dobzinski, Jan Vondrák
VLDB
2005
ACM
132views Database» more  VLDB 2005»
15 years 10 months ago
Hash-based labeling techniques for storage scaling
Scalable storage architectures allow for the addition or removal of storage devices to increase storage capacity and bandwidth or retire older devices. Assuming random placement of...
Shu-Yuen Didi Yao, Cyrus Shahabi, Per-Åke Larson