TY - JOUR
T1 - Autonomous change of behavior for environmental context
T2 - An intermittent search model with misunderstanding search pattern
AU - Murakami, Hisashi
AU - Gunji, Yukio Pegio
N1 - Publisher Copyright:
© 2017 John Wiley & Sons, Ltd.
PY - 2017/12
Y1 - 2017/12
N2 - Although foraging patterns have long been predicted to autonomously adapt to environmental conditions, empirical evidence has been found in recent years. This evidence suggests that the search strategy of animals is open to change so that animals can flexibly respond to their environment. In this study, we began with a simple computational model that possesses the principal features of an intermittent strategy, ie, careful local searches separated by longer steps, as a mechanism for relocation, where an agent in the model follows a rule to switch between two phases, but it could misunderstand this rule, ie, the agent follows an ambiguous switching rule. Thanks to this ambiguity, the agent's foraging strategy can continuously change. First, we demonstrate that our model can exhibit an autonomous change of strategy from Brownian‐type to Lévy type depending on the prey density, and we investigate the distribution of time intervals for switching between the phases. Moreover, we show that the model can display higher search efficiency than a correlated random walk.
AB - Although foraging patterns have long been predicted to autonomously adapt to environmental conditions, empirical evidence has been found in recent years. This evidence suggests that the search strategy of animals is open to change so that animals can flexibly respond to their environment. In this study, we began with a simple computational model that possesses the principal features of an intermittent strategy, ie, careful local searches separated by longer steps, as a mechanism for relocation, where an agent in the model follows a rule to switch between two phases, but it could misunderstand this rule, ie, the agent follows an ambiguous switching rule. Thanks to this ambiguity, the agent's foraging strategy can continuously change. First, we demonstrate that our model can exhibit an autonomous change of strategy from Brownian‐type to Lévy type depending on the prey density, and we investigate the distribution of time intervals for switching between the phases. Moreover, we show that the model can display higher search efficiency than a correlated random walk.
KW - Animal foraging
KW - Intermittent strategy
KW - Random search
UR - http://www.scopus.com/inward/record.url?scp=85022333008&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85022333008&partnerID=8YFLogxK
U2 - 10.1002/mma.4508
DO - 10.1002/mma.4508
M3 - Article
AN - SCOPUS:85022333008
VL - 40
SP - 7013
EP - 7021
JO - Mathematical Methods in the Applied Sciences
JF - Mathematical Methods in the Applied Sciences
SN - 0170-4214
IS - 18
ER -