模型

表达式

约束条件

1. LC (1992)

log i t ( q x , t ) = α x + β x κ t + ε x , t

β x = 1 κ t = 0

2. RH (2006)

log i t ( q x , t ) = α x + β x ( 1 ) κ t + β x ( 2 ) γ t x + ε x , t

β x ( 1 ) = 1 β x ( 2 ) = 1 κ t = 0 γ t x = 0

3. APC (2006)

log i t ( q x , t ) = α x + κ t + γ t x + ε x , t

κ t = 0 γ t x = 0 ( t x ) γ t x = 0

4. CBD (2006)

log i t ( q x , t ) = κ t ( 1 ) + κ t ( 2 ) ( x x ¯ ) + ε x , t

5. PLAT (2009)

log i t ( q x , t ) = α x + κ t ( 1 ) + κ t ( 2 ) ( x ¯ x ) + κ t ( 3 ) ( x ¯ x ) + + γ t x + ε x , t

κ t ( 3 ) = 0 γ t x = 0 ( t x ) γ t x = 0