1545 search results - page 154 / 309 » On tree congestion of graphs |
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ICDT
2009
ACM
15 years 11 months ago
2009
ACM
Graph-theoretic aggregation problems have been considered both in OLAP (grid graph) and XML (tree). This paper gives new results for MIN aggregation in a tree, where we want the M...
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WEA
2010
Springer
15 years 5 months ago
2010
Springer
A tanglegram consists of a pair of (not necessarily binary) trees T1, T2 with leaf sets L1, L2. Additional edges, called tangles, may connect nodes in L1 with those in L2. The task...
GLOBECOM
2008
IEEE
15 years 4 months ago
2008
IEEE
— This paper investigates the problem of the formation of an uplink tree structure among the IEEE 802.16j network’s relay stations (RSs) and their serving base station (MR-BS)....
GLOBECOM
2006
IEEE
15 years 4 months ago
2006
IEEE
— In wireless ad hoc networks (WANETs), e.g. wireless sensor networks, battery-powered devices are constrained by limited amount of energy. Many WANET applications require that t...
SODA
2004
ACM
14 years 11 months ago
2004
ACM
We consider the problem of finding a sparse set of edges containing the minimum spanning tree (MST) of a random subgraph of G with high probability. The two random models that we ...