장시영
(Department of Industrial & Information Systems Engineering, Seoul National University of Science and Technology)
,
이강원
(Department of Industrial & Information Systems Engineering, Seoul National University of Science and Technology)
서울 수도권 지하철 망은 과거 수십 년 동안 도심지의 인구 분산, 교통 정체 해소 그리고 인접 도시의 활성화 등 다수의 목적을 위하여 여러 번의 진화 과정을 거쳐 왔다. 본 연구에서는 서울 수도권 망의 동적인 진화에 따라 지하철 망의 특성과 망의 효율이 어떻게 변화해 왔는지를 분석하였다. 아울러 본 연구에서는 지하철 망의 효율을 보다 현실적으로 나타낼 수 있는 새로운 척도를 제안하였다. 서울 지하철 망의 효율성은 74%로 외국의 값들보다 높게 나타났으며 승객의 실질적인 흐름을 고려하면 효율성은 85% 이상으로 더 높게 나타났다. 9호선과 신분당선, 의정부선과 에버라인 노선들은 2013년 9월 이후로 수송 실적 관련 자료를 공개하지 않기 때문에 본 연구에서는 분석 범위를 데이터가 존재하는 2008년 9월부터 2013년 9월로 국한하였다.
서울 수도권 지하철 망은 과거 수십 년 동안 도심지의 인구 분산, 교통 정체 해소 그리고 인접 도시의 활성화 등 다수의 목적을 위하여 여러 번의 진화 과정을 거쳐 왔다. 본 연구에서는 서울 수도권 망의 동적인 진화에 따라 지하철 망의 특성과 망의 효율이 어떻게 변화해 왔는지를 분석하였다. 아울러 본 연구에서는 지하철 망의 효율을 보다 현실적으로 나타낼 수 있는 새로운 척도를 제안하였다. 서울 지하철 망의 효율성은 74%로 외국의 값들보다 높게 나타났으며 승객의 실질적인 흐름을 고려하면 효율성은 85% 이상으로 더 높게 나타났다. 9호선과 신분당선, 의정부선과 에버라인 노선들은 2013년 9월 이후로 수송 실적 관련 자료를 공개하지 않기 때문에 본 연구에서는 분석 범위를 데이터가 존재하는 2008년 9월부터 2013년 9월로 국한하였다.
The metropolitan subway network of Seoul has gone through many evolutionary processes in past decades to disperse the floating population and improve the traffic flow. In this study, we analyzed how the structural characteristics and the efficiency of the subway network have changed according to the...
The metropolitan subway network of Seoul has gone through many evolutionary processes in past decades to disperse the floating population and improve the traffic flow. In this study, we analyzed how the structural characteristics and the efficiency of the subway network have changed according to the dynamic evolutionary processes of the metropolitan subway network of Seoul. We have also proposed new measures that can be used to characterize the structural properties of the subway network more practically. It is shown that the global efficiency is about 74%, which is higher than those of subway networks of foreign countries. It should also be considered that passenger flow between stations is even higher, at about 85%. Since the private lines, including line 9, the New Bundang line, the Uijeongbu line, and the Ever line do not release their traffic data since September, 2013, only 5 years of data from September, 2008 to September, 2013 is available. So, in this study we limit the analysis period to these 5 years.
The metropolitan subway network of Seoul has gone through many evolutionary processes in past decades to disperse the floating population and improve the traffic flow. In this study, we analyzed how the structural characteristics and the efficiency of the subway network have changed according to the dynamic evolutionary processes of the metropolitan subway network of Seoul. We have also proposed new measures that can be used to characterize the structural properties of the subway network more practically. It is shown that the global efficiency is about 74%, which is higher than those of subway networks of foreign countries. It should also be considered that passenger flow between stations is even higher, at about 85%. Since the private lines, including line 9, the New Bundang line, the Uijeongbu line, and the Ever line do not release their traffic data since September, 2013, only 5 years of data from September, 2008 to September, 2013 is available. So, in this study we limit the analysis period to these 5 years.
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문제 정의
The metropolitan subway network of Seoul has gone through many evolutionary processes in past decades to disperse the floating population and improve the traffic flow. In this study we analyze how the structural characteristics and the efficiency have been changed according to the evolutionary processes of metropolitan subway network of Seoul. To analyze the changes in the structural characteristics over time we calculate several measures which represent the topological properties of network and trace the changes of these measures.
가설 설정
Thus, a static analysis can not reflect comprehensively the characteristics of network. In this study, we investigated how the structural properties and the efficiency have been changed according to the dynamic evolutionary processes of Seoul metropolitan subway network. We also proposed the new measures, which can be used to characterize the structural properties of subway network more practically.
제안 방법
Subway network planning is an important element of transit planning. In this study, we have provided the several topological measures, which can represent the structural properties and the efficiencies of subway network. Based on these measures we can effectively analyze the impacts of different planning scenarios, which would lead to the optimal planning of future Seoul metropolitan subway network.
In this study we analyze how the structural characteristics and the efficiency have been changed according to the evolutionary processes of metropolitan subway network of Seoul. To analyze the changes in the structural characteristics over time we calculate several measures which represent the topological properties of network and trace the changes of these measures. To analyze the changes in the network efficiency over time, we also calculate the global efficiency measure proposed by Latora[3] and trace the changes of this measure.
Now we want to answer the question of “how efficient the yearly change of subway network is?”. To answer this question we introduce a new measure, the relative global efficiency, which combines CV and E glob (G) or WE glob (G). That is,
Two measures, global efficiency and local efficiency were proposed and small-world networks were seen as systems that are both globally and locally efficient. Using these measures they analyzed the Boston subway transportation system(MBTA) and found that MBTA is a very efficient transportation system on a global scale but shows a poor local behaviour.
이론/모형
And the subway station codes are collected from Seoul Open Data Plaza[5]. With these values we have used the equation of Bullock[6] to calculate the Euclidean distances between any two stations. For the area of administrative district we have used Korean Statistical Information Service(KOSIS)[7].
성능/효과
[3] introduced the concept of efficiency of a network, measuring how efficiently it exchanges information over the network. Two measures, global efficiency and local efficiency were proposed and small-world networks were seen as systems that are both globally and locally efficient. Using these measures they analyzed the Boston subway transportation system(MBTA) and found that MBTA is a very efficient transportation system on a global scale but shows a poor local behaviour.
참고문헌 (11)
S. Derrible, C. Kennedy (2010) Evaluating, Comparing, and Improving Metro Networks: Application to Plans for Toronto, Canada, Transportation Research Record: Journal of the Transportation Research Board, 2146, pp.43-51.
M.L. Mouronte (2014) Topological Analysis of the Subway Network of Madrid, International Multi-Conference on Computing in the Global Information Technology, Seville, Spain, pp.9-13.
V. Latora, M. Marchiori (2001) Efficient Behavior of Small-World Networks, Physical Review Letters, 87(19), p.198701.
http://data.seoul.go.kr (Accessed 28 September 2015).
R. Bullock (2007) Great circle distances and bearings between two locations, MDT. June 5.
http://kosis.kr (Accessed 28 September 2015).
L. Biao, Z. Xiaoxi, X. Zhang. (2014) Evaluating the evolution of subway networks: evidence from beijing subway network, EPL(Europhysics Letters), 105(5), p.58004.
V. Latora, M. Marchiori. (2002) Is the Boston subway a small-world network?, Physica A: Statistical Mechanics and its Applications, 314(1), pp.109-113.
C. Han, L. Liu. (2009) Topological vulnerability of subway network in China, International Conference on Management and Service Science, Shanghai, China, pp.1-4.
T. Majima, M. Katuhara, K. Takadama (2007) Analysis on Transport Networks of Railway, Subway and Waterbus in Japan, Studies in Computational Intelligence, 56, pp.99-113.
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