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"(1) A branch of computer science devoted to developing data processing systems that performs functions normally assoicated with human intelligence, such as reasoning, learning, and self-improvement.
(2) The capability of a device to perform functions that are normally associated with human intelligence such as reasoning, learning, and self-improvement."
[Definitions are from ANSI INCITS 172-220 (R2007) Information Technology -- American National Standard Dictionary of Information Technology (ANSDIT), and cited in NIST's U.S. Leadership in AI: A Plan for Federal Engagement in Developing Technical Standards and Related Tools (August 9, 2019).]