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Reference.org
Discrete phase-type distribution
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<p>The discrete phase-type distribution is a <a href="/facts/Probability_distribution/EpsKKVRu">probability distribution</a> that results from a system of one or more inter-related <a href="/facts/Geometric_distribution/c8wjfaoV">geometric distributions</a> occurring in sequence, or phases. The sequence in which each of the phases occur may itself be a <a href="/facts/Stochastic_process/Ng1n1dnB">stochastic process</a>. The distribution can be represented by a random variable describing the time until absorption of an <a href="/facts/Absorbing_Markov_chain/Pcw4shY5">absorbing Markov chain</a> with one absorbing state. Each of the states of the Markov chain represents one of the phases. </p><p>It has <a href="/facts/Continuous_time/RR8wpS9e">continuous time</a> equivalent in the <a href="/facts/Phase-type_distribution/LGDbCMKh">phase-type distribution</a>. </p>