Milestones

The events that shaped AI, in order.

737 entries, all primary-sourced
milestone 1957

Bellman formalizes dynamic programming

Richard Bellman's 1957 book Dynamic Programming gave reinforcement learning its mathematical backbone, including the Bellman equation.

milestone February 7, 1958

ARPA is founded after Sputnik

On February 7, 1958, the US created ARPA, later DARPA, the agency that would fund foundational computing and AI research.

milestone 1959

Arthur Samuel's checkers program

Arthur Samuel's self-improving checkers program popularized the term machine learning and showed computers could learn from experience.

milestone April 1960

McCarthy defines Lisp

John McCarthy's 1960 paper defined Lisp, the list-processing language that became the standard tool of AI research for the next thirty years.

milestone 1962

Hubel and Wiesel map the visual cortex

Hubel and Wiesel's 1962 paper showed the visual cortex detects edges with simple and complex cells, inspiring later convolutional networks.

milestone 1965

DENDRAL, the first expert system

DENDRAL was a Stanford program that reasoned like a human chemist to identify molecules from instrument data, and is widely regarded as the first expert system.

milestone 1965

I.J. Good and the Intelligence Explosion

Mathematician I.J. Good's 1965 paper introduced the idea of an ultraintelligent machine that designs ever-better machines, producing an intelligence explosion.

milestone 1966

ELIZA, the first famous chatbot

Joseph Weizenbaum's ELIZA was an early conversational program that mimicked a psychotherapist using simple pattern matching.

milestone September 1970

Winston's Arch-Learning Program

Patrick Winston's 1970 program learned structural concepts like 'arch' from blocks-world examples and near-misses, an early model of concept learning.

milestone 1972

Colmerauer and Roussel create Prolog

In Marseille in 1972, Alain Colmerauer and Philippe Roussel created Prolog, the logic programming language that let you state facts and rules and query them.

milestone August 1974

First World Computer Chess Championship

The first World Computer Chess Championship, held in Stockholm in 1974, became a 50-year proving ground for game-playing AI; the Soviet Kaissa won.

milestone 1976

MYCIN, the medical expert system

MYCIN was a Stanford expert system that advised doctors on diagnosing and treating blood infections using a few hundred rules and a way of handling uncertainty.