Introduction to Machine Learning

By Dr. Priya Sharma | March 5, 2026

Machine learning is a subset of artificial intelligence that enables systems to learn and improve from experience without being explicitly programmed. This article provides a beginner-friendly overview of the core concepts.

Supervised Learning

In supervised learning, the algorithm learns from labelled training data. Given input-output pairs, it builds a model that can predict outputs for new, unseen inputs. Common examples include spam detection, image classification, and price prediction.

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Unsupervised Learning

Unlike supervised learning, unsupervised algorithms work with unlabelled data. They seek to discover hidden patterns or groupings. Clustering algorithms like K-means group similar data points together, while dimensionality reduction techniques like PCA simplify complex datasets.

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Reinforcement Learning

Reinforcement learning trains agents to make sequences of decisions by rewarding desired behaviours and penalising undesired ones. It has achieved remarkable results in game playing, robotics, and resource management.

Getting Started

Python is the lingua franca of machine learning. Libraries like scikit-learn, TensorFlow, and PyTorch provide accessible tools for building and training models. Start with simple linear regression before moving on to more complex architectures.

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Machine learning is a vast and rapidly evolving field. The best way to learn is by doing — pick a dataset, choose an algorithm, and start experimenting.