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GIS
2004
ACM
16 years 26 days ago
Adaptive hierarchical RBF interpolation for creating smooth digital elevation models
This paper presents a fast algorithm for smooth digital elevation model interpolation and approximation from scattered elevation data. The global surface is reconstructed by subdi...
Joachim Pouderoux, Jean-Christophe Gonzato, Ireneu...
ICML
2007
IEEE
16 years 19 days ago
Modeling changing dependency structure in multivariate time series
We show how to apply the efficient Bayesian changepoint detection techniques of Fearnhead in the multivariate setting. We model the joint density of vector-valued observations usi...
Xiang Xuan, Kevin P. Murphy
EUROCRYPT
2009
Springer
16 years 12 days ago
Possibility and Impossibility Results for Encryption and Commitment Secure under Selective Opening
The existence of encryption and commitment schemes secure under selective opening attack (SOA) has remained open despite considerable interest and attention. We provide the rst pub...
Mihir Bellare, Dennis Hofheinz, Scott Yilek
PDP
2010
IEEE
15 years 6 months ago
On the Scalability of Hypergraph Models for Sparse Matrix Partitioning
Abstract—We investigate the scalability of the hypergraphbased sparse matrix partitioning methods with respect to the increasing sizes of matrices and number of nonzeros. We prop...
Bora Ucar, Ümit V. Çatalyürek
GLOBECOM
2009
IEEE
15 years 6 months ago
Downlink Mobile OFDMA Resource Allocation with Minimum User Rate Requests
— The problem of resource allocation (RA) in a downlink OFDMA system with minimum user rate requests is examined under the realistic scenario of partial (imperfect) channel state...
Stelios Stefanatos, Christos Papathanasiou, Nikos ...