Sciweavers

206 search results - page 40 / 42
» A distributed approximation algorithm for the minimum degree...
Sort
View
STOC
2005
ACM
184views Algorithms» more  STOC 2005»
13 years 12 months ago
Coresets in dynamic geometric data streams
A dynamic geometric data stream consists of a sequence of m insert/delete operations of points from the discrete space {1, . . . , ∆}d [26]. We develop streaming (1 + )-approxim...
Gereon Frahling, Christian Sohler
GIS
2005
ACM
14 years 7 months ago
Two ellipse-based pruning methods for group nearest neighbor queries
Group nearest neighbor (GNN) queries are a relatively new type of operations in spatial database applications. Different from a traditional kNN query which specifies a single quer...
Hongga Li, Hua Lu, Bo Huang, Zhiyong Huang
MOBIHOC
2007
ACM
14 years 6 months ago
Bounds for the capacity of wireless multihop networks imposed by topology and demand
Existing work on the capacity of wireless networks predominantly considers homogeneous random networks with random work load. The most relevant bounds on the network capacity, e.g...
Alireza Keshavarz-Haddad, Rudolf H. Riedi
MOBIHOC
2006
ACM
14 years 6 months ago
Mobile backbone networks --: construction and maintenance
We study a novel hierarchical wireless networking approach in which some of the nodes are more capable than others. In such networks, the more capable nodes can serve as Mobile Ba...
Anand Srinivas, Gil Zussman, Eytan Modiano
ASPDAC
2001
ACM
102views Hardware» more  ASPDAC 2001»
13 years 10 months ago
New graph bipartizations for double-exposure, bright field alternating phase-shift mask layout
Abstract-- We describe new graph bipartization algorithms for layout modification and phase assignment of bright-field alternating phaseshifting masks (AltPSM) [25]. The problem of...
Andrew B. Kahng, Shailesh Vaya, Alexander Zelikovs...