log_reg function

log_reg

Calculate the likelihood or log-likelihood for one observation of logistic regression model .

log_reg(y, x, beta, iflog = TRUE)

Arguments

• y: Response value (0 or 1).
• x: Covariate vector of dimension $p*1$.
• beta: Estimated parameter of logistic regression model.
• iflog: If TRUE, log_reg calculate the log-likelihood; else likelihood.

Returns

Likelihood or log-likelihood.

Examples

res = log_reg(1,c(1,2,3),c(1,-1,1))