Title :
Πgora: An Integration System for Probabilistic Data
Author :
Olteanu, D. ; Papageorgiou, L. ; van Schaik, S.J.
Author_Institution :
Dept. of Comput. Sci., Univ. of Oxford, Oxford, UK
Abstract :
Πgora is an integration system for probabilistic data modelled using different formalisms such as pc-tables, Bayesian networks, and stochastic automata. User queries are expressed over a global relational layer and are evaluated by Πgora using a range of strategies, including data conversion into one probabilistic formalism followed by evaluation using a formalism-specific engine, and hybrid plans, where subqueries are evaluated using engines for different formalisms. This demonstration allows users to experience Πgora on real-world heterogeneous data sources from the medical domain.
Keywords :
data integration; distributed databases; medical administrative data processing; probability; query processing; Πgora; data conversion; formalism-specific engine; global relational layer; hybrid plans; medical domain; probabilistic data integration system; probabilistic formalism; real-world heterogeneous data sources; subqueries; user queries; Bayes methods; Breast cancer; Diabetes; Engines; Pregnancy; Probabilistic logic; Random variables;
Conference_Titel :
Data Engineering (ICDE), 2013 IEEE 29th International Conference on
Conference_Location :
Brisbane, QLD
Print_ISBN :
978-1-4673-4909-3
Electronic_ISBN :
1063-6382
DOI :
10.1109/ICDE.2013.6544935
