Machine Learning
A subset of AI where systems learn from data to improve performance without explicit programming.
Also: ML
Definition
Machine learning is a branch of artificial intelligence in which algorithms and statistical models enable computer systems to learn from data and improve their performance on tasks without being explicitly programmed with rules. It encompasses supervised learning, unsupervised learning, and reinforcement learning. Applications include image recognition, natural language processing, recommendation systems, and fraud detection.
Example
“A spam email filter uses machine learning: it is trained on millions of labeled emails (spam and not spam), learning patterns in words, sender addresses, and formatting, then applies this knowledge to classify new incoming emails accurately.”
Usage Examples
- 1
“The bank's machine learning model flagged the unusual transaction pattern within milliseconds, preventing a ₹5 lakh fraud.”
- 2
“Using machine learning, the logistics company reduced delivery time predictions error from ±4 hours to ±45 minutes.”
When & How to Use
Use when enabling a system to improve its performance on a task through experience (data) without being explicitly programmed for every scenario.
- ▸Training a fraud detection model on historical transaction data for a fintech company
- ▸Building a recommendation engine that personalises product suggestions on an e-commerce platform
- ▸Predicting employee attrition risk from HR data to enable proactive retention actions
Etymology & Origin
Coined by Arthur Samuel in 1959 in his paper on a checkers-playing program. 'Machine' from Latin 'machina'; 'learning' from Old English 'leornian' (to get knowledge).
History & Evolution
Early ML was dominated by symbolic AI (1950s–80s). Neural networks gained traction in the 1980s–90s. The deep learning revolution began with AlexNet winning ImageNet (2012). Today, transformer models (GPT, BERT) represent the frontier. India's IITs and startups now lead applied ML research.
Synonyms
- ML
- statistical learning
- data-driven learning
- predictive modeling
Antonyms / Opposites
- rule-based programming
- explicit programming
Images
CC-licensed · free to useVideo
Related Terms
- Neural Network
- Deep Learning
- Algorithm
- Data Science