birth-death process


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birth-death process

[¦bərth ¦deth ‚prä‚səs]
(industrial engineering)
A simple queuing model in which units to be served arrive (birth) and depart (death) in a completely random manner.
(statistics)
A method for describing the size of a population in which the population increases or decreases by one unit or remains constant over short time periods.
References in periodicals archive ?
On the assumption that the underlying reality is a continuous-time, birth-death process with constant parameters [Lambda] and [Mu], the probability that a lineage that arose at time t in the past has some descendants today is the same as the probability that a birth-death process has not gone extinct at a time T - t after its origin.
This is simply the average number of progeny of a birth-death process, conditional upon nonextinction of the process (Kendall 1948a).
1994, "Stationary probabilities for a simple immigration birth-death process under the influence of total catastrophes," Stat.