297 search results - page 36 / 60 » Polynomial heuristics for query optimization |
SIGIR
2012
ACM
11 years 10 months ago
2012
ACM
Enterprise search is challenging for several reasons, notably the dynamic terminology and jargon that are specific to the enterprise domain. This challenge is partly addressed by...
GLOBECOM
2008
IEEE
14 years 2 months ago
2008
IEEE
— In this paper we study the complexity of spectrum assignment problems in cognitive radio networks (CRNs) in the presence of several constraints. Although optimal spectrum assig...
ICCS
2007
Springer
14 years 1 months ago
2007
Springer
This paper discusses and compares several policies to place replicas in tree networks, subject to server capacity and QoS constraints. The client requests are known beforehand, wh...
MST
2010
13 years 6 months ago
2010
We study the following variant of the bin covering problem. We are given a set of unit sized items, where each item has a color associated with it. We are given an integer paramet...
ICC
2008
IEEE
14 years 2 months ago
2008
IEEE
—Taking advantage of the frequency diversity and multiuser diversity in OFDMA based wireless networks, dynamic subcarrier assignment mechanisms have shown to be able to achieve m...