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IJVR
2008
135views more  IJVR 2008»
15 years 6 months ago
Employing Virtual Lecturers' Facial Expressions in Virtual Educational Environments
This research began with a preliminary exploratory study that observed the relationship between the facial expressions of three human lecturers in a real academic lecture theatre a...
G. Theonas, D. Hobbs, D. Rigas
INFORMATICALT
2008
124views more  INFORMATICALT 2008»
15 years 6 months ago
Hierarchical Adaptive Clustering
This paper studies an adaptive clustering problem. We focus on re-clustering an object set, previously clustered, when the feature set characterizing the objects increases. We prop...
Gabriela Serban, Alina Campan
145
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IPL
2008
89views more  IPL 2008»
15 years 6 months ago
On the tractability of coloring semirandom graphs
As part of the efforts put in understanding the intricacies of the k-colorability problem, different distributions over k-colorable graphs were analyzed. While the problem is notor...
Julia Böttcher, Dan Vilenchik
IPM
2008
115views more  IPM 2008»
15 years 6 months ago
Adapting information retrieval systems to user queries
Users enter queries that are short as well as long. The aim of this work is to evaluate techniques that can enable information retrieval (IR) systems to automatically adapt to per...
Giridhar Kumaran, James Allan
IS
2008
15 years 6 months ago
Clustering spatial networks for aggregate query processing: A hypergraph approach
In spatial networks, clustering adjacent data to disk pages is highly likely to reduce the number of disk page accesses made by the aggregate network operations during query proce...
Engin Demir, Cevdet Aykanat, Berkant Barla Cambazo...