| Title |
A Study on the Application of Distance-Weighting to ERAM Model |
| Authors |
Park, Gunsong ; Kim, Minseok ; Choi, Jaepil |
| Keywords |
Spatial Analysis ; ERAM Model ; Distance-Weighted ; Pedestrian Movement Rate ; Segmented Axial Map |
| Abstract |
The purpose of this study is to verify whether to improve the explanatory power by introducing and applying distance-weighting concept to the ERAM model, one of spatial analysis techniques. Introduction of distance-weighting to the ERAM model was tried in an existing study, but it showed lower explanatory power than the original ERAM model, to which distance-weighting concept is not applied. In the existing research, movement distance is in reverse proportion to accessibility, which is problematic. Moreover, this study proposed new distance-weighting functions, not the reciprocal of distance(1/D) from the existing study. The original ERAM model, the existing distance-weighted ERAM model, and the distance-weighted ERAM model with newly proposed distance-weighting functions in this study were used for analyzing two regions in Seoul, Insadong and Myeongdong. In these regions, the correlation tests between the analysis results and the pedestrian movement rate showed that the distance-weighted ERAM model with the newly proposed distance-weighting functions has higher explanatory power than the original ERAM Model and the existing distance-weighted ERAM Model. In particular, the case of applying 'W=1-D/250' function as distance-weighting function showed the highest explanatory power among the three functions proposed in this study. This study reveals that the distance-weighting concept can contribute to improve the explanatory power of the ERAM model to human movement behavior, which opposes to conclusion of the existing study. However, further studies need to be done more deeply and extensively to find out the final form of distance-weighting function. |