Keyphrases
- cross validation
- multiple sources
- model selection
- variable selection
- hyperparameters
- domain adaptation
- training set
- cross validated
- regularization parameter
- data sources
- support vector
- generalization error
- error estimates
- unseen data
- information criterion
- grid search
- active learning
- leave one out cross validation
- databases
- user interests
- prior knowledge
- recommender systems
- ls svm
- high dimensional
- website
- feature selection
- nearest neighbor classifiers