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What is Unsupervised Learning?

by Bhumika

Unsupervised learning is the process of training a machine with data that haven’t classed or labeled, and then letting the algorithm to act on that data without supervision. The machine’s job here is to sort unsorted data into groups based on similarities, patterns, and differences without any prior data training.

Unlike supervised learning, there is no teacher present, which implies the computer will not be trained. As a result, the machine is limit in its ability to discover hidden structure in unlabel data on its own.

It is a machine learning technique in which models are not supervise using a training dataset, as the name suggests. Models, on the other hand, use the data to uncover hidden patterns and insights. It is comparable to the learning that occurs in the human brain while learning new things.

Types  of Unsupervised Learning

There are two sorts of problems that can be solve using these algorithm:

Clustering  – A clustering problem is one in which you wish to uncover the data’s intrinsic groupings, such as categorizing clients based on their shopping habits. Clustering is a way of organizing things into clusters so that those with the most similarities stay in one group while those with less or no similarities stay in another. 

Association  – When you wish to identify rules that describe substantial chunks of your data, such as persons who buy X also buy Y, you have an association rule learning problem. An association rule is a type of these strategy for discovering associations between variables in a large database. It identifies the group of items that appear in the dataset together.


  • It is utilize for more complex problems than supervised learning because there is no label input data in unsupervised learning.
  • It is prefer because unlabel data is easier to obtain than labeled data.


  • Because it lacks a comparable output, it is inherently more challenging than supervised learning.
  • Because the input data is not label and algorithms do not know the exact output in advance, the result of an unsupervised learning method may be less accurate.

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