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» Clustering with Diversity
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RECSYS
2009
ACM
14 years 6 days ago
Effective diverse and obfuscated attacks on model-based recommender systems
Robustness analysis research has shown that conventional memory-based recommender systems are very susceptible to malicious profile-injection attacks. A number of attack models h...
Zunping Cheng, Neil Hurley
ECIR
2010
Springer
13 years 9 months ago
Evaluation and User Preference Study on Spatial Diversity
Spatial diversity is a relatively new branch of research in the context of spatial information retrieval. Although the assumption that spatially diversified results may meet users&...
Jiayu Tang, Mark Sanderson
ICONIP
2008
13 years 9 months ago
Local Feature Selection in Text Clustering
Abstract. Feature selection has improved the performance of text clustering. Global feature selection tries to identify a single subset of features which are relevant to all cluste...
Marcelo N. Ribeiro, Manoel J. R. Neto, Ricardo Bas...
VTC
2007
IEEE
130views Communications» more  VTC 2007»
14 years 1 months ago
Cross-Correlation Analysis of Generalized Distributed Antenna Systems with Cooperative Diversity
— In this paper, geometry-based channel models are proposed to describe the topology of generalized distributed antenna systems with cooperative diversity (GDAS-CD). The system a...
Yifan Chen, Chau Yuen, Yan Zhang, Zhenrong Zhang
WIRN
2005
Springer
14 years 1 months ago
Ensembles Based on Random Projections to Improve the Accuracy of Clustering Algorithms
We present an algorithmic scheme for unsupervised cluster ensembles, based on randomized projections between metric spaces, by which a substantial dimensionality reduction is obtai...
Alberto Bertoni, Giorgio Valentini