dsmmR

Performs parametric and non-parametric estimation and simulation of drifting semi-Markov processes. The definition of parametric and non-parametric model specifications is also possible. Furthermore, three different types of drifting semi-Markov models are considered. These models differ in the number of transition matrices and sojourn time distributions used for the computation of a number of semi-Markov kernels, which in turn characterize the drifting semi-Markov kernel. For the parametric model estimation and specification, several discrete distributions are considered for the sojourn times: Uniform, Poisson, Geometric, Discrete Weibull and Negative Binomial. The non-parametric model specification makes no assumptions about the shape of the sojourn time distributions. Semi-Markov models are described in: Barbu, V.S., Limnios, N. (2008) doi:10.1007/978-0-387-73173-5. Drifting Markov models are described in: Vergne, N. (2008) doi:10.2202/1544-6115.1326. Reliability indicators of Drifting Markov models are described in: Barbu, V. S., Vergne, N. (2019) doi:10.1007/s11009-018-9682-8. We acknowledge the DATALAB Project https://lmrs-num.math.cnrs.fr/projet-datalab.html (financed by the European Union with the European Regional Development fund (ERDF) and by the Normandy Region) and the HSMM-INCA Project (financed by the French Agence Nationale de la Recherche (ANR) under grant ANR-21-CE40-0005).

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