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The Computer Journal 2005 48(1):30-41; doi:10.1093/comjnl/bxh066
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Temporal Functional Dependencies and Temporal Nodes Bayesian Networks

Wei Yi Liu1 *, Ning Song2 § and Hong Yao3 ¶

1 School of Information Science and Engineering, Yunnan University, Kunming 650091, PR China, 2 Department of Metallurgy, Kunming University of Science and Technology, Kunming 650093, PR China, 3 Department of Computer Science, University of Regina, SK, Canada, S4S 0A2

A temporal nodes Bayesian network (TNBN) is an alternative graphical representation of temporal probabilistic information.The temporal functional dependency is an important data dependencyin temporal relational databases. In this paper temporal data dependencies are extended into delayed conditions, called asynchronous dependencies. The purpose of this paper is to set up a connection between these asynchronous data dependencies and TNBNs. We show that we can obtain the maximum conditionalin dependencies implied by given temporal functional dependencies. Furthermore, we propose an approach to construct a TNBN from a set of temporal functional dependencies.

Received 4 September 2003. Revised 29 July 2004.

* Email: liuweiyi2000{at}yahoo.com.cn

§ Email: songning{at}public.km.yn.cn

Email: yao2hong{at}cs.uregina.ca


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