grid.tvp: Computes 'tvp' Function for Multiple Values of 'lambda'.

In fDMA: Dynamic Model Averaging and Dynamic Model Selection for Continuous Outcomes

Computes tvp Function for Multiple Values of lambda.

Description

Sometimes it is necessary to consider various values of parameter lambda in Time-Varying Parameters Regression. This function computes tvp function for all values of lambda for a given grid.

This function is a wrapper of tvp.

Usage

grid.tvp(y,x,V,grid.lambda,W=NULL,kappa=NULL,parallel.grid=NULL,c=NULL)

Arguments

y	see tvp
x	see tvp
V	see tvp
grid.lambda	a numeric vector of different values of lambda, see tvp
W	optional, see tvp
kappa	optional, see tvp
parallel.grid	optional, logical, indicate whether parallel computations should be used, by default parallel=FALSE
c	optional, see tvp

Value

an object of class grid.tvp, list of

$models	list of tvp objects
$fq	matrix with Root Mean Squared Error (RMSE) and Mean Absolute Error (MAE) for all estimated models

See Also

print.grid.tvp, summary.grid.tvp, plot.grid.tvp.

Examples

wti <- crudeoil[-1,1]
drivers <- (lag(crudeoil[,-1],k=1))[-1,]
ld.wti <- (diff(log(wti)))[-1,]
ld.drivers <- drivers[-1,]
ld.drivers[,c(4,6)] <- (diff(drivers[,c(4,6)]))[-1,]
ld.drivers[,c(1:2,5,7)] <- (diff(log(drivers[,c(1:2,5,7)])))[-1,]
ld.drivers[,c(3,6)] <- ld.drivers[,c(3,6)]/100

grl <- c(0.99,0.98,0.97,0.96,0.95)
g <- grid.tvp(y=ld.wti,x=ld.drivers,V=1,grid.lambda=grl)

# extract model with lambda=0.95
model <- g$models[[5]]

fDMA documentation built on April 4, 2025, 5:16 a.m.