151 search results - page 6 / 31 » Tight Bounds for Graph Problems in Insertion Streams |
TALG
2010
14 years 8 months ago
2010
We establish the first nontrivial lower bounds on timespace tradeoffs for the selection problem. We prove that any comparison-based randomized algorithm for finding the median ...
SIBGRAPI
2007
IEEE
15 years 4 months ago
2007
IEEE
Video clip localization consists in identifying real positions of a specific video clip in a video stream. To cope with this problem, we propose a new approach considering the ma...
IPL
2007
14 years 9 months ago
2007
We deal with the problem of maintaining a dynamic graph so that queries of the form “is there an edge between u and v?” are processed fast. We consider graphs of bounded arbor...
COCO
2009
Springer
15 years 4 months ago
2009
Springer
—The Gap-Hamming-Distance problem arose in the context of proving space lower bounds for a number of key problems in the data stream model. In this problem, Alice and Bob have to...
STOC
2004
ACM
15 years 10 months ago
2004
ACM
We prove an (lg n) cell-probe lower bound on maintaining connectivity in dynamic graphs, as well as a more general trade-off between updates and queries. Our bound holds even if t...