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. 2021 Jul 18;11(7):277–289. doi: 10.5500/wjt.v11.i7.277

Table 1.

Different machine learning categories


Supervised learning
Unsupervised learning
Reinforcement learning
Dataset Labeled (input and output are known) Unlabeled (output is not known) No predefined data
Method Analyze the relation between input and output. The output is predicted based on this relation Analyze the input parameters to uncover hidden patterns. Output is predicted based on those patterns Randomly trialing a vast number of possible inputs, then comparing and grading their performance
Example Decision trees, support vector machines, neutral networks, k-nearest neighbors k-means clustering, archetype analysis Q-learning