- Title : Availability Evaluation of Least Cost Path and Probabilistic LCP for Ancient Route Research: A Comparison with the Bonghwa-ro of Joseon Dynasty Main Roads
- Author : Shim Woojin
- Journal : The Geographical Journal of Korea
- Publication Date : December, 2022
- Abstract
This study aims to explore the difference, applicability, and utilization of each method according to spatial characteristics through comparison with the Bonghwa-ro of Joseon Dynasty Main Roads using basic least cost path(LCP) and Probabilistic LCP. This study employs the most fundamental and recent methods of least cost path research to determine the accuracy of each method and the spatial characteristics of the results through comparison with the Bonghwa-ro of Joseon Dynasty Main Roads, and it is possible to restore the past path through this method. This research would like to examine the applicability and efficiency in areas where it is difficult to retrace previous historical paths. According to the algorithm that accounts for the shortest distance and the travel cost determined by the topography, the path estimated through the least-cost path study clearly showed a distinction in accuracy between the area with a wide flat landforms and the area with a predominance of steep slopes. The probabilistic LCP has little natural cost difference, thus its applicability is better where a particular preference or stopover has a greater impact on the route. On the other hand, it has been shown that in areas where the path is constrained by physical restraint, even the most basic least-cost path method can yield a result with a sufficient level of accuracy. When researching the historical route, both the methods based on the restoration and identification of historical materials, which has mostly been used in geography up to now, and the least-cost path method, which has been applied seldom, both offers certain advantages and limitations when researching the historical route. However, the effective application of the two methods will allow a larger range of research than the earlier studies, though each limitation is correlated to the strengths of the other.
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