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`!KAOS`!, is a goal-oriented `F33f`_`[software requirements`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Requirement]`_`f capturing approach in `F33f`_`[requirements engineering`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Requirements_engineering]`_`f. It is a specific `F33f`_`[Goal modeling`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Goal_modeling]`_`f method; another is `F33f`_`[i*`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=I*]`_`f. It allows for requirements to be calculated from goal diagrams.`:cite-ref-1[`F5bf`_`[1`#cite-note-1]`_`f] KAOS stands for `*Knowledge Acquisition in automated specification`*`:cite-ref-2[`F5bf`_`[2`#cite-note-2]`_`f] or `*Keep All Objectives Satisfied`*.`:cite-ref-3[`F5bf`_`[3`#cite-note-3]`_`f]

The University of Oregon and the University of Louvain (Belgium) designed the KAOS methodology in 1990 by `F33f`_`[Axel van Lamsweerde`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Axel_van_Lamsweerde]`_`f and others.`:cite-ref-objectiver-com-4-0[`F5bf`_`[4`#cite-note-objectiver-com-4]`_`f] It is taught worldwide at the university level`:cite-ref-5[`F5bf`_`[5`#cite-note-5]`_`f] for capturing software requirements.

There is lack of evidence that KAOS is used in the industry`:cite-ref-6[`F5bf`_`[6`#cite-note-6]`_`f] and as of February 2023, the only tool supporting it is Objectiver, written by the same group`:cite-ref-7[`F5bf`_`[7`#cite-note-7]`_`f] behind the KAOS methodology, with the latest release 3.0c47 dated at March 9th, 2012.`:cite-ref-8[`F5bf`_`[8`#cite-note-8]`_`f]

>>Contents

• `F0af`_`[External links`#external-links]`_`f

• `F0af`_`[References`#references]`_`f

-─

>>External links

• A KAOS Tutorial

• Goal-Oriented Requirements Engineering: An Overview of the Current Research

• Evaluating the Effectiveness of a Goal-Oriented Requirements Engineering Method

>>References

`:cite-note-1`!1.`! `F0af`_`[↑`#cite-ref-1]`_`f Goal-Oriented Requirements Engineering: An Overview of the Current Research.

`:cite-note-2`!2.`! `F0af`_`[↑`#cite-ref-2]`_`f A. Dardenne, A. van Lamsweerde and S. Fickas. Goal-Directed Requirements Acquisition. Science of Computer Programming, 20(1-2), April 1993.

`:cite-note-3`!3.`! `F0af`_`[↑`#cite-ref-3]`_`f `F33f`_`[A. van Lamsweerde`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Axel_van_Lamsweerde]`_`f, E. Letier. From Object Orientation to Goal Orientation: A Paradigm Shift for Requirements Engineering. Proc. Radical Innovations of Software and Systems Engineering, LNCS, 2003.

`:cite-note-objectiver-com-4`!4.`! `F0af`_`[↑`#cite-ref-objectiver-com-4-0]`_`f A KAOS Tutorial.

`:cite-note-5`!5.`! `F0af`_`[↑`#cite-ref-5]`_`f List of universities teaching KAOS include `F33f`_`[Michigan State`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Michigan_State_University]`_`f (lectures), `F33f`_`[Pace`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Pace_University]`_`f (lectures), `F33f`_`[Louvain`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Université_catholique_de_Louvain]`_`f (lectures), `F33f`_`[Coimbra`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=University_of_Coimbra]`_`f and others.

`:cite-note-6`!6.`! `F0af`_`[↑`#cite-ref-6]`_`f "Is KAOS goal modeling used in the industry?". `*Software Engineering `F33f`_`[Stack Exchange`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Stack_Exchange]`_`f`*. Retrieved 5 February 2023.

`:cite-note-7`!7.`! `F0af`_`[↑`#cite-ref-7]`_`f "Respect-IT technology". `*Objectiver homepage`*. Retrieved 5 February 2023.

`:cite-note-8`!8.`! `F0af`_`[↑`#cite-ref-8]`_`f "Objectiver releases". `*Objectiver homepage`*. Retrieved 5 February 2023.

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