Unsupervised learning (machine learning)

Unsupervised learning is one of the main algorithms used in machine learning

Unsupervised learning algorithms are used on datasets where output labels are not provided. Hence, instead of trying to predict a particular output for each input, these algorithms attempt to discover the underlying structure of the input data, clustering similar inputs together. 

An example of a simple unsupervised learning algorithm is k-nearest neighbour clustering. 

Machine learning
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