John Ross Quinlan
John Ross Quinlan develops machine learning methods that infer decision trees and classification rules from examples. Quinlan published Induction of Decision Trees in March 1986. The paper describes ID3 and studies how decision tree induction can handle noisy or incomplete information. Quinlan offers FOIL, FFOIL, and C4.5 software for download.
Timeline
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1986
Induction of decision trees
Quinlan published Induction of Decision Trees in March 1986. The paper describes ID3 and studies how decision tree induction can handle noisy or incomplete information.
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1990
Research recognition
AAAI elected John Ross Quinlan as a Fellow in 1990.
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As of October 2026
Research software
His personal page offers FOIL, FFOIL, and C4.5 software for download.
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As of October 2026
C5.0 software continuation
C5.0 superseded C4.5, and Rulequest makes C5.0 source code available under the GNU General Public Licence.
Sources and credits
Photo: rulequest.com; Ross Quinlan's personal homepage; creator not stated. License: Not stated by source. Source: rulequest.com. Cropped to a square and resized. Ask us to remove or replace this photo.