cost2_gaussian {bbemkr}R Documentation

Negative of log posterior associated with the error variance

Description

Calculates the negative of log posterior for the normal error variance, using the leave-one-out cross validated samples.

Usage

cost2_gaussian(x, data_x, data_y, prior_st)

Arguments

x

Log of square bandwidths

data_x

Regressors

data_y

Response variable

prior_st

Another tuning parameter of the prior of error variance, following inverse gamma distribution

Details

The prior of normal error variance follows an inverse-gamma distribution with hyperparameter prior_st = 1.

Value

Value of the cost function

Author(s)

Han Lin Shang

References

X. Zhang and R.D. Brooks and M.L. King (2009), A Bayesian approach to bandwidth selection for multivariate kernel regression with an application to state-price density estimation, Journal of Econometrics, 153, 21-32.

See Also

np_gibbs, cost

Examples

x = log(nrr(data_x, FALSE)^2)
cost2_gaussian(x, data_x = data_x, data_y = data_ynorm, prior_st = 1)

[Package bbemkr version 2.0 Index]