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Proceedings Paper

Cognitive distortions based on MDS configuration and sketch mapping: a case study in Beijing
Author(s): Si Shen; Lulu Xue; Lun Wu; Yu Liu
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Paper Abstract

As an emerging field, cognitive map kept playing a significant role in geography these decades. To date, there are two dominant methods to externalize human's internal cognitive map, namely, multidimensional scaling (MDS) and skech mapping. However, among most recent researches on cognitive map, the differences between both methods are always ignored. The usage of one method over another is still under scrutiny. In order to shed light on the similarity or distinctions of MDS configuration and sketch mapping, we conducted an experiment on Beijing residents by requesting a sketch of the region within 3rd Ring and meanwhile extracting distance estimates between 8 landmarks. Employing the Bidimensional regression along with standard deviational ellipse, we studied the global and local distortions among two kinds of cognitive maps and quantitatively measure the overall and local cognitive maps distortions. Besides, we use Monte Carlo simulation method to calculate the radius of distortion for the Distortion Index (DI). It shows that the average cognitive distortion of habitants in Beijing is 2km to 3km, and the distortion takes 2nd-ring road as a border, displaying a southwest-northeast diagonal stretch and an east-west contracted tendency. The distortion in the two methods is remarkably both correlated with factors, such as travel frequency and years of residence. Comparing two methods, it turned out that sketch map was more consistent with real map, while the distortion orientations of sketch map resembled MDS configuration. Finally, we gave possible reasons with regard to above conclusions and advices for future usage of two methods.

Paper Details

Date Published: 1 August 2007
PDF: 11 pages
Proc. SPIE 6751, Geoinformatics 2007: Cartographic Theory and Models, 67511A (1 August 2007); doi: 10.1117/12.759729
Show Author Affiliations
Si Shen, Peking Univ. (China)
Lulu Xue, Peking Univ. (China)
Lun Wu, Peking Univ. (China)
Yu Liu, Peking Univ. (China)


Published in SPIE Proceedings Vol. 6751:
Geoinformatics 2007: Cartographic Theory and Models

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