Behavior tree: Difference between revisions

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The extensive amount of detail involved in describing the numerous requirements for a large-scale system using natural language can lead to [[short-term memory]] overload,<ref name="dromey07EngLgeScale">Dromey, R.G. 2007. [http://www.beworld.org/BE/resource/presentation/Eng-LargeScale-Systems.pdf Principles for Engineering Large-Scale Software-Intensive Systems]</ref><ref name="raytheonSysResearch">Boston, J. 2008. [http://www.raytheon.com.au/Default.aspx?x=501 Raytheon Australia supports pioneering systems research] {{webarchive|url=https://web.archive.org/web/20090915050723/http://www.raytheon.com.au/Default.aspx?x=501|date=15 September 2009}}</ref> hindering a comprehensive understanding of the system's needs.<ref name="raytheonAustJoint" /> [[Natural language]] often introduces ambiguities, aliases, inconsistencies, redundancies, and incomplete information to concepts.<ref name = "dromey03K1-Dromey"/> This creates uncertainty and over complicates systems.

The behavior tree representation attempts to eliminate uncertainty by limiting vocabulary to the original requirements. For largeLarge requirement sets this may require the help of thea composition tree<ref name = "compositionTree">Behavior Engineering. [http://www.behaviorengineering.org/index.php?option=com_content&task=view&id=24&Itemid=34 Composition Trees] {{Webarchive|url=https://web.archive.org/web/20090302063932/http://www.behaviorengineering.org/index.php?option=com_content&task=view&id=24&Itemid=34 |date=2 March 2009 }}</ref> representation that resolves aliasaliases and other vocabulary problems in a prior step. The aim is to produce a deep, accurate, and holistic representation of system needs<ref name = "dromey07EngLgeScale"/> that can be understood by all readers (often [[Project stakeholder|stakeholders]]). Since the behavior tree notation uses [[Semantics of programming languages|formal semantics]], it can be an input for further processing, such as making an [[executable]] for a given set of requirements.

=== Behavior tree forms ===