I predict you'll find this logistic regression example with R to be helpful for gleaning useful information from common binary classification problems.

The beta-binomial distribution is extended to allow negative correlations among binary variates within an experimental unit. Regression models are proposed for both the binary variate response rate ...

Jerald F. Lawless, Negative Binomial and Mixed Poisson Regression, The Canadian Journal of Statistics / La Revue Canadienne de Statistique, Vol. 15, No. 3 (Sep., 1987), pp. 209-225 ...