Continous Time Markov Chain: A roadside Dhaba has 4 chairs. Customers come

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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6. Continous Time Markov Chain: A roadside Dhaba has 4 chairs. Customers come
according to a Poisson process with a rate of 1 customer per 10 minute and take an
empty chair and eats, occupying the chair with an exponential distribution with mean
of 10 minutes. If all chairs are filled, the customer just leaves. The rate diagram is
shown in figure 2 below where each state is the number of occupied chairs.
3
FIG. 2.
(a) Explain the rates in the diagram. Why there are different numbers in the arrows
going backwards.
(b) Find the generator G for this process.
(e) If 3 chairs are occupied, what is the expected time untill it changes.
(d) Find the stationary distribution and hence the probability that 3 chairs will be
ocupied at any given time.
Transcribed Image Text:6. Continous Time Markov Chain: A roadside Dhaba has 4 chairs. Customers come according to a Poisson process with a rate of 1 customer per 10 minute and take an empty chair and eats, occupying the chair with an exponential distribution with mean of 10 minutes. If all chairs are filled, the customer just leaves. The rate diagram is shown in figure 2 below where each state is the number of occupied chairs. 3 FIG. 2. (a) Explain the rates in the diagram. Why there are different numbers in the arrows going backwards. (b) Find the generator G for this process. (e) If 3 chairs are occupied, what is the expected time untill it changes. (d) Find the stationary distribution and hence the probability that 3 chairs will be ocupied at any given time.
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