摘要
在标签地图应用日益增加的背景下,亟需开展标签权重表达策略的评估研究。引入眼动跟踪方法,针对常用于标签地图权重表达的一种等差字大策略进行评估。实验设定无目的自由浏览和有目的阅读分析两个应用场景,布置标签选取、识别/搜索、记忆和主观评价任务,统计分析被试完成以上任务的眼动数据和其他衍生数据,结果显示:(1)不同大小的标签在信息凸显性、视觉吸引力、权重记忆以及识别/搜索时的搜索效率、阅读效率和认知负担方面并未表现出明显差异性;(2)文字大小处于上游的标签相比处于下游的标签更加容易被识别/搜索,被试的兴趣度更高,但并不意味着文字越大的标签越容易被识别/搜索,被试的兴趣度越高;(3)采用等差字大策略的标签地图总体评价良好。该研究有助于地图设计者进一步了解等差字大策略的特点。
Objectives:With the increasing application of tag maps,there is an urgent need for research on the evaluation of tag weight expression strategies.Tag weight differences in tag maps are usually reflected by different font sizes.One of the common strategies is evaluated,where the sequence of font sizes is an arithmetic progression.Methods:The five countries with different,representative shapes are selected as study cases.Five corresponding tag maps are produced by randomly generated tags in alphabetical order from left to right and top to bottom.On this basis,a controlled experiment is conducted.Two application scenarios of unpurposed free browsing and purposeful reading analysis are set,and tag selection,recognition/search,recalling,and subjective evaluation tasks are assigned.The subjects’ eye movement data and some other derived data are collected and statistically analyzed by the Kruskal-Wallis test and MannWhitney U test methods.Results:The results show that:(1) Tags of different sizes do not show significant differences in terms of visual salience,visual attractiveness,weight recalling and search efficiency,reading efficiency,and cognitive load in recognition/search tasks.(2) Tags with font size at the upper level are easier to be recognized/searched and of higher interest to subjects than those with font size at the lower level,but it does not mean that tags with larger size are more likely to be recognized/searched and of higher interest to subjects.(3) The overall evaluation of tag maps using font size strategy of arithmetic progression is at a good level.Conclusions:The paper is helpful for map designers to further understand the characteristics of font size strategy.The font size is not a panacea in the tag weight expression of tag maps.In addition to font size,tag weight differences in tag maps can be shown by combining other visual attributes such as brightness,color,typeface,etc.,or accompanying auxiliary charts according to the actual application.The interaction of the shape,area,the density of tag
作者
杨乃
庞旭静
奚大平
吴国佳
YANG Nai;PANG Xujing;XI Daping;WU Guojia(School of Geography and Information Engineering,China University of Geosciences(Wuhan),Wuhan 430078,China)
出处
《武汉大学学报（信息科学版）》
EI
CAS
CSCD
北大核心
2022年第12期2134-2142,共9页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金(42171438)。
