376 search results - page 7 / 76 » Betweenness Centrality : Algorithms and Lower Bounds |
APPROX
2010
Springer
13 years 9 months ago
2010
Springer
Abstract. Given a directed graph G = (V, E) and an integer k 1, a ktransitive-closure-spanner (k-TC-spanner) of G is a directed graph H = (V, EH ) that has (1) the same transitive...
ICALP
2009
Springer
14 years 8 months ago
2009
Springer
Estimating frequency moments and Lp distances are well studied problems in the adversarial data stream model and tight space bounds are known for these two problems. There has been...
COCO
2009
Springer
14 years 2 months ago
2009
Springer
A major open question in communication complexity is if randomized and quantum communication are polynomially related for all total functions. So far, no gap larger than a power o...
DLT
2006
13 years 9 months ago
2006
We investigate the following lower bound methods for regular languages: The fooling set technique, the extended fooling set technique, and the biclique edge cover technique. It is ...
ICALP
2007
Springer
14 years 1 months ago
2007
Springer
We present lower bounds on the space required to estimate the quantiles of a stream of numerical values. Quantile estimation is perhaps the most studied problem in the data stream ...