Computes the part of the loglikelihood function relevant to optimizing omega for step 1
ISOpureS1.model_optimize.omega.omega_compute_loglikelihood(omega, tumordata, model)(K-1)x1 matrix representing the weights of the normal profiles B_i used to make the weighted combination that forms the mean parameter vector for the Dirichlet distribution over m
a GxD matrix representing gene expression profiles of tumor samples
list containing all the parameters to be optimized
The part of the loglikelihood function relevant to optimizing omega