impactsSDPDm {SDPDmod}

Impacts for 'SDPDm' objects

Description

Direct and indirect effects estimates

Usage

impactsSDPDm(res, NSIM = 200, sd = 12345)

Arguments

res

an object of class 'SDPDm'

NSIM

number of simulations to be performed, default = 200

sd

starting seed, default = 12345

Details

For spatial dynamic panel data model:

y_{t} = \tau y_{t-1} + \rho W y_{t} + \eta W y_{t-1} + X_{t} \beta + W X_{t} \theta + \alpha + \mu + u_{t}

Short term effects for kth explanatory variable:

(I - \rho W)^{-1}(\beta_{k} I_{n} + \theta_{k} W)

Long term effects for kth explanatory variable:

((1-\tau)I_{n} - (\rho+\eta)W)^{-1}(\beta_{k} I_{n} + \theta_{k} W)

The direct effect is the average of the diagonal elements, and the indirect effect is the average of the row sums of the non-diagonal elements of the matrix.

Value

An object of class 'impactsSDPDm'

Author(s)

Rozeta Simonovska

See Also

SDPDm