Consider a discrete time Markov chain with finite or countable state space S and transition matrix...
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Consider a discrete time Markov chain with finite or countable state space S and transition matrix II(x, y), x, y E S, so that II(x, y) > 0 is the probability for the Markov chain to jump from z to y in one step, and Σyes II(x, y) ====== 1 for all x. Now assign a Poisson point process with rate A, to each state z S, with supres Aro. We can then define a continuous time Markov process (X)20 such that if X is at stater, then it waits until the Poisson process (Poisson clock) at x jumps, at which time X jumps to a randomly chosen state y Є S with probability II(x, y), y E S. Let д denote the probability distribution of X, i.e., P(Xy). Show that the probability vector ((y))yes with (y) = satisfies the following system of ordinary differential equations Σμ.(ν)λ, Που, 2) - με (α)λα d() dt YES — TES. lims40 (+8(a) 14(x)) and then consider (Hint: Apply the definition d dt all possible jumps during the time interval [t, t + 6].) = A probability distribution ((y))yes is called stationary (steady state) if: given that Xo has distribution д, i.e., P(Xo y) (y) for all y E S, then for any t> 0, X, also has distribution p. Equivalently, du)=0 for all re S and t≥0. Therefore must satisfy the equations (x)=(y)AI(y, x), VES dt ES. Consider a discrete time Markov chain with finite or countable state space S and transition matrix II(x, y), x, y E S, so that II(x, y) > 0 is the probability for the Markov chain to jump from z to y in one step, and Σyes II(x, y) ====== 1 for all x. Now assign a Poisson point process with rate A, to each state z S, with supres Aro. We can then define a continuous time Markov process (X)20 such that if X is at stater, then it waits until the Poisson process (Poisson clock) at x jumps, at which time X jumps to a randomly chosen state y Є S with probability II(x, y), y E S. Let д denote the probability distribution of X, i.e., P(Xy). Show that the probability vector ((y))yes with (y) = satisfies the following system of ordinary differential equations Σμ.(ν)λ, Που, 2) - με (α)λα d() dt YES — TES. lims40 (+8(a) 14(x)) and then consider (Hint: Apply the definition d dt all possible jumps during the time interval [t, t + 6].) = A probability distribution ((y))yes is called stationary (steady state) if: given that Xo has distribution д, i.e., P(Xo y) (y) for all y E S, then for any t> 0, X, also has distribution p. Equivalently, du)=0 for all re S and t≥0. Therefore must satisfy the equations (x)=(y)AI(y, x), VES dt ES.
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To show that the probability vector satisfies the system of ordinary differential equations lets con... View the full answer
Related Book For
Introduction to Operations Research
ISBN: 978-1259162985
10th edition
Authors: Frederick S. Hillier, Gerald J. Lieberman
Posted Date:
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