Log-likelihood function (with minus sign) for Roy's bivariate geometric model
minuslogRoy(x, y, theta1 = 0.5, theta2 = 0.5, theta3 = 1)a vector of observed values (non-negative integers)
a vector of observed values (non-negative integers) of the same length as x
paramater \(\theta_1\)
paramater \(\theta_2\)
paramater \(\theta_3\)
The value of the log-likelihood function, changed in sign
Roy, D. (1993) Reliability measures in the discrete bivariate set-up and related characterization results for a bivariate geometric distribution, Journal of Multivariate Analysis 46(2), 362-373.