Keyphrases
- cross validation
- social media
- model selection
- social media streams
- training set
- brand image
- variable selection
- unseen data
- cross validated
- social networks
- permutation tests
- support vector
- generalization error
- regularization parameter
- nearest neighbor classifiers
- test data
- service quality
- hyperparameters
- supervised learning
- data sets
- training samples
- error estimates
- information criterion
- active learning
- machine learning