On reducibility and ergodicity of population projection matrix models

On reducibility and ergodicity of population projection matrix models
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种群投影矩阵模型的约简性和遍历性

DOI:
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发表时间:
2010
期刊:
影响因子:
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通讯作者:
D. Hodgson
D. Hodgson
中科院分区:
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文献类型:
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作者:
I. Stott;S. Townley;D. Carslake;D. Hodgson

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1.人口预测矩阵(PPMs)可能是最常用的经验人口模型。为了对预测或前瞻性分析有用,PPM模型通常应该是不可简化的(相关的生命周期图包含必要的过渡速率,以促进从所有阶段到所有其他阶段的路径),因此应该是遍历的(无论在人口预测中使用何种初始阶段结构,它总是显示相同的稳定渐近增长率)。
1. Population projection matrices (PPMs) are probably the most commonly used empirical population models. To be useful for predictive or prospective analyses, PPM models should generally be irreducible (the associated life cycle graph contains the necessary transition rates to facilitate pathways from all stages to all other stages) and therefore ergodic (whatever initial stage structure is used in the population projection, it will always exhibit the same stable asymptotic growth rate).