Modelling gaze shift as a constrained random walk

被引：90

作者：

Boccignone, G

Ferraro, M

机构：

[1] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy

[2] INFM, I-10125 Turin, Italy

[3] Univ Salerno, Dipartimento Ingn Informaz & Ingn Elettr, I-84084 Fisciano, SA, Italy

[4] Univ Salerno, INFM, I-84084 Fisciano, SA, Italy

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2004年 / 331卷 / 1-2期

关键词：

gaze shifts; levy walks; complexity;

D O I：

10.1016/j.physa.2003.09.011

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper gaze shifts are considered as a realization of a stochastic process with non-local transition probabilities in a saliency field that represents a landscape upon which a constrained random walk is performed. The search is driven by a Langevin equation whose random term is generated by a Levy distribution, and by a Metropolis algorithm. Results of the simulations are compared with experimental data, and a notion of complexity is introduced to quantify the behavior of the system in different conditions. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：207 / 218

页数：12

共 27 条

[1] Optimizing the encounter rate in biological interactions: Levy versus Brownian strategies [J].