Quantitative Identification of Urban Functions with Fishers’ Exact Test and POI Data Applied in Classifying Urban Districts: A Case Study within the Sixth Ring Road in Beijing
Urban areas involve different functions that attract individuals and fit personal needs. Understanding the distribution and combination of these functions in a specific district is significant for urban development in cities. Many researchers have already studied the methods of identifying the domin...
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ftmdpi:oai:mdpi.com:/2220-9964/8/12/555/ 2023-08-20T04:06:58+02:00 Quantitative Identification of Urban Functions with Fishers’ Exact Test and POI Data Applied in Classifying Urban Districts: A Case Study within the Sixth Ring Road in Beijing Disheng Yi Jing Yang Jingjing Liu Yusi Liu Jing Zhang agris 2019-12-03 application/pdf https://doi.org/10.3390/ijgi8120555 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/ijgi8120555 https://creativecommons.org/licenses/by/4.0/ ISPRS International Journal of Geo-Information; Volume 8; Issue 12; Pages: 555 quantitative identification Fisher’s exact test k-modes clustering urban district POI data Text 2019 ftmdpi https://doi.org/10.3390/ijgi8120555 2023-07-31T22:51:35Z Urban areas involve different functions that attract individuals and fit personal needs. Understanding the distribution and combination of these functions in a specific district is significant for urban development in cities. Many researchers have already studied the methods of identifying the dominant functions in a district. However, the degree of collection and the representativeness of a function in a district are controlled not only by its number in the district but also by the number outside this district and a number of other functions. Thus, this study proposed a quantitative method to identify urban functions, using Fisher’s exact test and point of interest (POI) data, applied in determining the urban districts within the Sixth Ring Road in Beijing. To begin with, we defined a functional score based on three statistical features: the p-value, odds-ratio, and the frequency of each POI tag. The p-value and odds-ratio resulted from a statistical significance test, the Fisher’s exact test. Next, we ran a k-modes clustering algorithm to classify all urban districts in accordance with the score of each function and their combination in one district, and then we detected four different groups, namely, Work and Tourism Mixed-developed district, Mixed-developed Residential district, Developing Greenland district, and Mixed Recreation district. Compared with the other identifying methods, our method had good performance in identifying functions, except for transportation. In addition, the Coincidence Degree was used to evaluate the accuracy of classification. In our study, the total accuracy of identifying urban districts was 83.7%. Overall, the proposed identifying method provides an additional method to the various methods used to identify functions. Additionally, analyzing urban spatial structure can be simpler, which has certain theoretical and practical value for urban geospatial planning. Text Greenland MDPI Open Access Publishing Greenland ISPRS International Journal of Geo-Information 8 12 555 |
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MDPI Open Access Publishing |
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English |
topic |
quantitative identification Fisher’s exact test k-modes clustering urban district POI data |
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quantitative identification Fisher’s exact test k-modes clustering urban district POI data Disheng Yi Jing Yang Jingjing Liu Yusi Liu Jing Zhang Quantitative Identification of Urban Functions with Fishers’ Exact Test and POI Data Applied in Classifying Urban Districts: A Case Study within the Sixth Ring Road in Beijing |
topic_facet |
quantitative identification Fisher’s exact test k-modes clustering urban district POI data |
description |
Urban areas involve different functions that attract individuals and fit personal needs. Understanding the distribution and combination of these functions in a specific district is significant for urban development in cities. Many researchers have already studied the methods of identifying the dominant functions in a district. However, the degree of collection and the representativeness of a function in a district are controlled not only by its number in the district but also by the number outside this district and a number of other functions. Thus, this study proposed a quantitative method to identify urban functions, using Fisher’s exact test and point of interest (POI) data, applied in determining the urban districts within the Sixth Ring Road in Beijing. To begin with, we defined a functional score based on three statistical features: the p-value, odds-ratio, and the frequency of each POI tag. The p-value and odds-ratio resulted from a statistical significance test, the Fisher’s exact test. Next, we ran a k-modes clustering algorithm to classify all urban districts in accordance with the score of each function and their combination in one district, and then we detected four different groups, namely, Work and Tourism Mixed-developed district, Mixed-developed Residential district, Developing Greenland district, and Mixed Recreation district. Compared with the other identifying methods, our method had good performance in identifying functions, except for transportation. In addition, the Coincidence Degree was used to evaluate the accuracy of classification. In our study, the total accuracy of identifying urban districts was 83.7%. Overall, the proposed identifying method provides an additional method to the various methods used to identify functions. Additionally, analyzing urban spatial structure can be simpler, which has certain theoretical and practical value for urban geospatial planning. |
format |
Text |
author |
Disheng Yi Jing Yang Jingjing Liu Yusi Liu Jing Zhang |
author_facet |
Disheng Yi Jing Yang Jingjing Liu Yusi Liu Jing Zhang |
author_sort |
Disheng Yi |
title |
Quantitative Identification of Urban Functions with Fishers’ Exact Test and POI Data Applied in Classifying Urban Districts: A Case Study within the Sixth Ring Road in Beijing |
title_short |
Quantitative Identification of Urban Functions with Fishers’ Exact Test and POI Data Applied in Classifying Urban Districts: A Case Study within the Sixth Ring Road in Beijing |
title_full |
Quantitative Identification of Urban Functions with Fishers’ Exact Test and POI Data Applied in Classifying Urban Districts: A Case Study within the Sixth Ring Road in Beijing |
title_fullStr |
Quantitative Identification of Urban Functions with Fishers’ Exact Test and POI Data Applied in Classifying Urban Districts: A Case Study within the Sixth Ring Road in Beijing |
title_full_unstemmed |
Quantitative Identification of Urban Functions with Fishers’ Exact Test and POI Data Applied in Classifying Urban Districts: A Case Study within the Sixth Ring Road in Beijing |
title_sort |
quantitative identification of urban functions with fishers’ exact test and poi data applied in classifying urban districts: a case study within the sixth ring road in beijing |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2019 |
url |
https://doi.org/10.3390/ijgi8120555 |
op_coverage |
agris |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
ISPRS International Journal of Geo-Information; Volume 8; Issue 12; Pages: 555 |
op_relation |
https://dx.doi.org/10.3390/ijgi8120555 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/ijgi8120555 |
container_title |
ISPRS International Journal of Geo-Information |
container_volume |
8 |
container_issue |
12 |
container_start_page |
555 |
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