Update theta in Gibbs sampler
update_theta(N, Z, as, bs, theta, mu_theta, Sigma_theta_inv)An int, which gives the number of observations. (> 0)
A matrix N by J of continuous augmented data.
A vector of item discrimination parameters.
A vector of item threshold parameters.
A vector of prior thetas.
The prior mean for theta.
The prior inverse variance for theta.
A vector of thetas.