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ICMCS
2006
IEEE
142views Multimedia» more  ICMCS 2006»
15 years 12 months ago
FEMA: A Fast Expectation Maximization Algorithm based on Grid and PCA
EM algorithm is an important unsupervised clustering algorithm, but the algorithm has several limitations. In this paper, we propose a fast EM algorithm (FEMA) to address the limi...
Zhiwen Yu, Hau-San Wong
DKE
2006
83views more  DKE 2006»
15 years 5 months ago
Bulk insertion for R-trees by seeded clustering
We propose a scalable technique called Seeded Clustering that allows us to maintain R-tree indices by bulk insertion while keeping pace with high data arrival rates. Our approach ...
Taewon Lee, Bongki Moon, Sukho Lee
ICWMC
2006
IEEE
15 years 12 months ago
Base Station Assisted Hierarchical Cluster-Based Routing
Wireless sensor networks (WSNs) are commonly used for continuously monitoring applications. This paper investigates a base station assisted energy efficient routing for hierarchi...
Sajid Hussain, Abdul Wasey Matin
IPM
2007
158views more  IPM 2007»
15 years 5 months ago
Validation and interpretation of Web users' sessions clusters
Understanding users’ navigation on the Web is important towards improving the quality of information and the speed of accessing large-scale Web data sources. Clustering of users...
George Pallis, Lefteris Angelis, Athena Vakali
JCSS
2010
68views more  JCSS 2010»
15 years 4 months ago
Simplified proof of the blocking theorem for free-choice Petri nets
: Every cluster in a bounded and live free-choice system has a unique blocking marking. It can be reached by firing an occurrence sequence, which avoids any transition of the clust...
Joachim Wehler