Keyphrases
- multi class
- named entity recognition
- supervised learning
- unsupervised learning
- multi class classifier
- learning algorithm
- semi supervised
- learning process
- prior knowledge
- information extraction
- active learning
- named entities
- learning tasks
- learning problems
- natural language processing
- error correcting output codes
- multi class classification
- binary classification
- support vector machine
- machine learning
- multiple instance learning
- natural language
- semi supervised learning
- classifier ensemble
- labeled and unlabeled data
- multiple classes
- training data
- data sets
- labeled data
- feature selection
- similarity measure
- pairwise
- training set