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PRL
2007
150views more  PRL 2007»
15 years 6 months ago
A method for initialising the K-means clustering algorithm using kd-trees
We present a method for initialising the K-means clustering algorithm. Our method hinges on the use of a kd-tree to perform a density estimation of the data at various locations. ...
Stephen J. Redmond, Conor Heneghan
ALGOSENSORS
2010
Springer
15 years 5 months ago
MSDR-D Network Localization Algorithm
Abstract. We present a distributed multi-scale dead-reckoning (MSDR-D) algorithm for network localization that utilizes local distance and angular information for nearby sensors. T...
Kevin Coogan, Varun Khare, Stephen G. Kobourov, Ba...
BCI
2009
IEEE
16 years 1 months ago
On the Performance of SVD-Based Algorithms for Collaborative Filtering
—In this paper, we describe and compare three Collaborative Filtering (CF) algorithms aiming at the low-rank approximation of the user-item ratings matrix. The algorithm implemen...
Manolis G. Vozalis, Angelos I. Markos, Konstantino...
CEC
2005
IEEE
16 years 11 days ago
Evolutionary algorithm for noun phrase detection in natural language processing
Noun phrases of a document usually are the main information bearers. Thus, the detection of these units is crucial in many applications related to information retrieval, such as co...
Jose Ignacio Serrano, Lourdes Araujo
ITCC
2005
IEEE
16 years 10 days ago
Simulation of Mobility and Routing in Ad Hoc Networks using Ant Colony Algorithms
Mobile Ad-hoc Networks (MANET’s) have recently attracted a lot of attention in the research community as well as the industry. This technology has become increasingly important ...
Tarek H. Ahmed