Editing Cyc (section)

{{short description|Artificial intelligence project}}
{{Other uses}}
{{Infobox software
| title = 
| name = Cyc
| logo = 
| logo caption = Cycorp company's logo
| screenshot = Cyc Projects Logos.png
| caption = ''(Clockwise)'' Logos for Cyc's Knowledge Base, Inference Engines, Actionable Output, and Intelligent Data Selection
| collapsible = 
| author = [[Douglas Lenat]]
| developer = Cycorp, Inc.
| released = {{Start date and age|1984}}
| discontinued = 
| latest release version = 6.1
| latest release date = {{Start date and age|2017|11|27}}
| latest preview version = 
| latest preview date = <!-- {{Start date and age|YYYY|MM|DD}} -->
| programming language = [[Lisp (programming language)|Lisp]], [[CycL]], [[SubL]]
| operating system = 
| platform = 
| size = 
| language = 
| genre = [[Knowledge representation]] language and [[inference engine]]
| license = 
| alexa = 
| website = {{URL|www.cyc.com}}
}}

'''Cyc''' (pronounced {{IPAc-en|ˈ|s|aɪ|k}} {{respell|SYKE}}) is a long-term [[artificial intelligence]] (AI) project that aims to assemble a comprehensive [[ontology (information science)|ontology]] and [[knowledge base]] that spans the basic concepts and rules about how the world works. Hoping to capture [[common sense knowledge]], Cyc focuses on [[implicit knowledge]]. The project began in July 1984 at [[Microelectronics and Computer Technology Corporation|MCC]] and was developed later by the '''Cycorp''' company.

The name "Cyc" (from "encyclopedia") is a registered trademark owned by Cycorp. [[CycL]] has a publicly released specification, and dozens of HL (Heuristic Level) modules were described in Lenat and Guha's textbook,<ref name=":3">{{Cite book |last1=Lenat |first1=Douglas B. |url=https://dl.acm.org/citation.cfm?id=575523 |title=Building Large Knowledge-Based Systems; Representation and Inference in the Cyc Project |last2=Guha |first2=R. V. |date=1989 |publisher=Addison-Wesley Longman Publishing Co., Inc. |isbn=978-0201517521 |edition=1st |location=Boston, MA, USA}}</ref> but the Cyc inference engine code and the full list of HL modules are Cycorp-proprietary.<ref name=":1">{{cite web |last=Lenat |first=Douglas |author-link=Douglas Lenat |title=Hal's Legacy: 2001's Computer as Dream and Reality. From 2001 to 2001: Common Sense and the Mind of HAL |url=https://www.cyc.com/wp-content/uploads/2019/07/img-615153705-0001-1.pdf |url-status=live |archive-url=https://web.archive.org/web/20191209190521/https://www.cyc.com/wp-content/uploads/2019/07/img-615153705-0001-1.pdf |archive-date=2019-12-09 |access-date=2006-09-26 |publisher=[[Cycorp, Inc.]]}}</ref>