TY - JOUR
T1 - Weber-Fechner relation and Lévy-like searching stemmed from ambiguous experiences
AU - Sakiyama, T.
AU - Gunji, Y. P.
N1 - Funding Information:
The authors thank the Japan Society for the Promotion of Science for financial support ( B2130093 ).
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/7/18
Y1 - 2015/7/18
N2 - Abstract Here, we show that an optimized Lévy-like walk (μ≈2.00) and the Weber-Fechner law can be achieved in our new multi-agent based model that depends on step lengths. Weber-Fechner equation is strongly related to power-law. This equation is sometimes used in order to obtain power-law tailed distributions in observational levels. However, no study has reported how these two popular equations were achieved in micro or mechanistic levels. We propose a new random walk algorithm based on a re-valued algorithm, in which an agent has limited memory capacity, i.e., an agent has a memory of only four recent random numbers (limitation number). Using these random numbers, the agent alters the directional heuristic if the agent experiences moving directional biases. In this paper, the initial limitation number varies depending on the interaction among agents. Thus, agents change their limitation number and produce time delay in respect to rule change events. We show that slope values are variable compared with isolate foraging even though both indicate power-law tailed walks derived from Weber-Fechner equation.
AB - Abstract Here, we show that an optimized Lévy-like walk (μ≈2.00) and the Weber-Fechner law can be achieved in our new multi-agent based model that depends on step lengths. Weber-Fechner equation is strongly related to power-law. This equation is sometimes used in order to obtain power-law tailed distributions in observational levels. However, no study has reported how these two popular equations were achieved in micro or mechanistic levels. We propose a new random walk algorithm based on a re-valued algorithm, in which an agent has limited memory capacity, i.e., an agent has a memory of only four recent random numbers (limitation number). Using these random numbers, the agent alters the directional heuristic if the agent experiences moving directional biases. In this paper, the initial limitation number varies depending on the interaction among agents. Thus, agents change their limitation number and produce time delay in respect to rule change events. We show that slope values are variable compared with isolate foraging even though both indicate power-law tailed walks derived from Weber-Fechner equation.
KW - Power-law
KW - Random walk
KW - Weber-Fechner's law
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U2 - 10.1016/j.physa.2015.06.038
DO - 10.1016/j.physa.2015.06.038
M3 - Article
AN - SCOPUS:84937212331
SN - 0378-4371
VL - 438
SP - 161
EP - 168
JO - Physica A: Statistical Mechanics and its Applications
JF - Physica A: Statistical Mechanics and its Applications
M1 - 16269
ER -