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CS Professional · Artificial Intelligence, Data Analytics and Cyber Security - Laws and Practice · Artificial Intelligence - Introduction and Basics

A retailer in Pune feeds thousands of unlabelled customer purchase records into an algorithm that groups customers into segments with similar buying behaviour, without being told the segments in advance. Which technique is this?

The technique is clustering, an unsupervised learning method. The algorithm receives unlabelled purchase data and finds groups of similar customers on its own, with no predefined segments or target labels, unlike classification or regression, which require labelled outputs.

  1. AClassification using labelled data
  2. BClustering under unsupervised learningCorrect
  3. CRegression on a target variable
  4. DReward-based reinforcement learning

Explanation

No labels are given and the algorithm discovers natural groupings by itself, which is clustering, a standard unsupervised method. Classification and regression need labelled target values. Reinforcement learning relies on rewards from an environment.

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