多靶随机搜索模型与搜索性能

首都医科大学学报 ›› 1998, Vol. 19 ›› Issue (2): 116-120.

多靶随机搜索模型与搜索性能

周果宏

首都医科大学信息网络中心

收稿日期:1997-08-22 修回日期:1900-01-01 出版日期:1998-04-15 发布日期:1998-04-15

A Probability Model for Multiple Target Random Search

Zhou Guohong

Information Network Center, Capital University of Medical Sciences

Received:1997-08-22 Revised:1900-01-01 Online:1998-04-15 Published:1998-04-15

摘要/Abstract

摘要： 人类视觉搜索的过程实际上是用视力角(visuallobe)去覆盖搜索场景的过程.而搜索模式通常可分为系统搜索和随机搜索.实验发现,当搜索条件相对困难时,参试者多数倾向于进行随机搜索.本研究从概率论的观点提出了关于多靶随机搜索效率的数学模型,经过精心选定有关参数,数学模型与实验结果较好地拟合.

关键词: 眼动, 扫视, 随机搜索, 系统搜索, 概率, 凝视点

Abstract: Human visual search includes two interacting processes: A cover process(“look")and a vision process(“see"). The fundamental strategies for human visual search of a 2D scene include systematic and random cover patterns. Based on the experiment results, when search conditions are relative dificult, searchers usually conducted a random search. A probability formula for modelling random search performance is discussed in this paper. When the parameters are properly seleted, this model fits the experiment data quite well.

Key words: eye movements, saccade, random search, systematic search, probability, fixation

中图分类号:

周果宏. 多靶随机搜索模型与搜索性能[J]. 首都医科大学学报, 1998, 19(2): 116-120.

Zhou Guohong . A Probability Model for Multiple Target Random Search[J]. Journal of Capital Medical University, 1998, 19(2): 116-120.