- Published: February 2011
- Region: Global
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Non-Markovian system Models. Edition No. 1
- Published: January 2010
- Region: Global
- 192 Pages
- VDM Publishing House
We present an algorithm to transform a subset of generalized semi-Markov processes into semi-Markov processes. The transformation preserves steady-state simulation, a simulation that allows us to retrieve the steady state probability of the generalized semi-Markov process from that of the transformed process. The method presented could generate semi-Markov processes with big state spaces, for that reason we introduce two state simplification techniques. The first one deals with the state space explosion problem by deleting states from the original generalized semi-Markov process. The technique deletes states from the generalized semi-Markov process while preserving the distribution of time needed to travel between non-deleted states; as well as the transient state probabilities of a subset of the states in the process. The second technique deals with the state space explosion problem at the level of semi-Markov processes. It works by deleting states from the semi-Markov processes while preserving the average time to travel between non-deleted states, as well as the steady state probabilities of a subset of the states in the process.
Fida Kamal, Dankar.
Dr Dankar is a researcher in data de-identification at the CHEO research Institute in Ottawa Canada since 2007. She earned her Bachelor and Masters in Mathematics from the American University of Beirut in 1999 and her PhD in Computer Science from University of Ottawa in 2008. Her primary research interests are data privacy and disclosure control.