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» Theory and Use of the EM Algorithm
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SPAA
2005
ACM
16 years 6 days ago
The expansion and mixing time of skip graphs with applications
We prove that with high probability a skip graph contains a 4-regular expander as a subgraph, and estimate the quality of the expansion via simulations. As a consequence skip grap...
James Aspnes, Udi Wieder
ATAL
2005
Springer
16 years 5 days ago
OWL ontology translation based on the O3F framework
This paper presents an approach for ontology translation in the O3F ontology framework and a concrete implemented agent that translates between ontologies expressed in OWL. In the...
Luís Mota, Luís Miguel Botelho
MM
2004
ACM
90views Multimedia» more  MM 2004»
16 years 2 days ago
Probability fusion for correlated multimedia streams
The fusion of multiple correlated observations of a multimedia system is a research problem arising in many multimedia applications. In this paper, we propose a novel framework fo...
Pradeep K. Atrey, Mohan S. Kankanhalli
CCS
2004
ACM
16 years 1 days ago
Concealing complex policies with hidden credentials
Hidden credentials are useful in protecting sensitive resource requests, resources, policies, and credentials. We propose a significant performance improvement when implementing ...
Robert W. Bradshaw, Jason E. Holt, Kent E. Seamons
SIGIR
2003
ACM
15 years 12 months ago
Bayesian extension to the language model for ad hoc information retrieval
We propose a Bayesian extension to the ad-hoc Language Model. Many smoothed estimators used for the multinomial query model in ad-hoc Language Models (including Laplace and Bayes-...
Hugo Zaragoza, Djoerd Hiemstra, Michael E. Tipping