Editing Crowd simulation (section)

==== Personality-based models ====
One method of creating individualistic behavior for crowd agents is through the use of personality traits.<ref>{{cite book |doi=10.1145/2019406.2019413 |chapter=Simulating heterogeneous crowd behaviors using personality trait theory |title=Proceedings of the 2011 ACM SIGGRAPH/Eurographics Symposium on Computer Animation – SCA '11 |pages=43–52 |year=2011 |last1=Guy |first1=Stephen J. |last2=Kim |first2=Sujeong |last3=Lin |first3=Ming C. |last4=Manocha |first4=Dinesh |isbn=978-1-4503-0923-3 }}</ref> Each agent may have certain aspects of their personality tuned based on a formula that associates aspects such as aggressiveness or impulsiveness with variables that govern the agents' behavior. One way this association can be found is through a subjective study in which agents are randomly assigned values for these variables and participants are asked to describe each agent in terms of these personality traits. A regression may then be done to determine a correlation between these traits and the agent variables. The personality traits can then be tuned and have an appropriate effect on agent behavior.

The [[Big Five personality traits|OCEAN personality model]] has been used to define a mapping between personality traits and crowd simulation parameters. Automating crowd parameter tuning with personality traits provides easy authoring of scenarios with heterogeneous crowds.<ref>{{cite journal|last1=Durupinar|first1=Funda|last2=Pelechano|first2=Nuria|last3=Allbeck|first3=Jan|last4=Gudukbay|first4=Ugur|last5=Badler|first5=Norman I.|title=How the Ocean Personality Model Affects the Perception of Crowds|journal=IEEE Computer Graphics and Applications|date=2011|volume=31|issue=3|pages=22–31|doi=10.1109/MCG.2009.105|pmid=24808089|hdl=11693/11800 |hdl-access=free}}</ref>