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Table 8 Types of machine learning techniques

From: Survey of review spam detection using machine learning techniques

Method Attributes
Supervised Learning Learning from a set of labeled data
Requires labeled training data
Most common form of learning
Unsupervised Learning Learning from a set of unlabeled data
Finds unseen relationships in the data independent of class label
Most common form is clustering
Semi-supervised Learning Learning from labeled and unlabeled data
Only requires a relatively small set of labeled data which is supplemented with a large amount of unlabeled data
Ideal for cases such as review spam where vast amounts of unlabeled data exist