Evaluation of noise annotation lines: using noise to represent thematic uncertainty in maps
Evaluation of noise annotation lines: using noise to represent thematic uncertainty in maps
复制标题
噪声注释线的评估：使用噪声来表示地图中的主题不确定性
DOI：
10.1080/15230406.2014.949868
复制
发表时间：
2014
影响因子：
2.5
通讯作者：
J. Schiewe
中科院分区：
文献类型：
--
作者：
C. Kinkeldey;J. Mason;A. Klippel;J. Schiewe
噪声注记线是一种很有前途的技术，可视化专题地图的不确定性。然而，尚未在用户研究中对其潜力进行评估。在两个实验中，我们评估了这种技术的可用性方面的不同数量的不确定性水平，以及噪声注释线的两个设计方面的影响：颗粒和噪声网格的宽度。我们进行了一项基于网络的研究，利用150个不同地图中的2个区域进行定性比较。我们从Amazon Mechanical Turk招募了参与者，其中大多数是非地图使用方面的专家。我们的研究结果表明，对于“恒定不确定性”（即，在专题地图中，噪声注释线可用于多达六个不确定性级别。在四个、六个和八个级别的比较中，该技术的不同设计产生了显着不同的准确度。我们建议使用最成功的“大噪声宽度，粗粒度”设计。对于“混合不确定性”（即，不确定性不是每个区域恒定的），我们观察到准确度显著下降，但对于四个水平，仍然可以推荐该技术。这篇文章是我们的会议论文的后续，报告了两个实验中第一个的初步结果。
Noise annotation lines are a promising technique to visualize thematic uncertainty in maps. However, their potential has not yet been evaluated in user studies. In two experiments, we assessed the usability of this technique with respect to a different number of uncertainty levels as well as the influence of two design aspects of noise annotation lines: the grain and the width of the noise grid. We conducted a web-based study utilizing a qualitative comparison of 2 areas in 150 different maps. We recruited participants from Amazon Mechanical Turk with the majority being nonexperts with respect to the use of maps. Our findings suggest that for qualitative comparisons of “constant uncertainty” (i.e., constant uncertainty per area) in thematic maps, noise annotation lines can be used for up to six uncertainty levels. During comparison of four, six, and eight levels, the different designs of the technique yielded significantly different accuracies. We propose to use the “large noise width, coarse grain” design that was most successful. For “mixed uncertainty” (i.e., uncertainty is not constant per area) we observed a significant decrease in accuracy, but for four levels the technique can still be recommended. This article is a follow-up to our conference paper reporting on preliminary results of the first of the two experiments.