machine learning

noun

1

: a computational method that is a subfield of artificial intelligence and that enables a computer to learn to perform tasks by analyzing a large dataset without being explicitly programmed

The company is curating the overall topics manually, but Twitter will be relying on machine learning to intelligently populate the topics themselves so that the tweets can stay up to date.

—Lucas Matney

Unsupervised learning, also known as unsupervised machine learning, uses machine learning algorithms to analyze and cluster unlabeled datasets. These algorithms discover hidden patterns or data groupings without the need for human intervention.

—IBM

Supervised machine learning requires labeled data to adjust the parameters of the model during training. … But without quality training data, supervised learning models will end up making poor inferences.

—Ben Dickson

Reinforcement machine learning trains machines through trial and error to take the best action by establishing a reward system. Reinforcement learning can train models to play games or train autonomous vehicles to drive by telling the machine when it made the right decisions, which helps it learn over time what actions it should take.

—Sara Brown

2

: the branch of computer science that employs machine learning

An entire subspecialty known as machine learning is devoted to building algorithms that allow computers to develop new behaviors based on experience.

—Adam Piore

While many scholars in the developing field of machine learning were focused on improving algorithms, [Cynthia] Rudin instead wanted to use AI's power to help society.

—Duke University

—abbreviation ML

Examples of machine learning in a Sentence

Recent Examples on the Web

The Scarcity of Top AI Talent Competition centers on specialized AI researchers from elite PhD programs with machine learning backgrounds and veterans who already spearheaded key innovations in top companies. —Gerui Wang, Forbes.com, 12 July 2025

David Gagne, a National Center for Atmospheric Research scientist who is focused on using machine learning to improve weather models, is developing artificial intelligence algorithms to improve short-term forecast accuracy, for example. —Evan Bush, NBC news, 8 July 2025

Also on the list is Abubakar Abid, who works in machine learning Hugging Face, which is backed by Sequoia, and Ahmed Sabbah, CEO of Telda, a financial technology startup that Sequoia first invested in four years ago. —Jordan Novet, CNBC, 7 July 2025

The scientists validated their machine learning outputs by applying the same tools to datasets from mice and adult human cortex cells, and reported a false positive rate of just 0.37 percent. —Lauren Leffer, Popular Science, 3 July 2025

Word History

First Known Use

1953, in the meaning defined at sense 1

Rhymes for machine learning

• adjourning
• concerning
• discerning
• returning
• burning
• churning
• earning
• spurning
• turning
• yearning
• overturning