9. The computer readable medium of claim 7 , wherein when the classifier model relates to a Gaussian Process (GP), the medium further comprises: program code for deriving the efficient analytical expressions using Laplace and expectation propagation approximations.
7. Non-transitory computer readable media comprising program code that when executed by a programmable processor causes the processor to execute a method for generating a classifier model, the computer readable media comprising: program code for defining a plurality of predictive performance measures based on a leave one out (LOO) cross validation in terms of selectable model parameters; program code for deriving efficient analytical expressions by approximating one or more analytical expressions based on the plurality of predictive performance measures to compute a LOO predictive performance; program code for selecting a classifier model based on the LOO predictive performance; and program code for classifying a web content using the selected classifier model.