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Quality ofCrowdsourced Data onUrban Morphology—TheHuman InfluenceExperiment (HUMINEX) Benjamin BechtelMatthias DemuzerePanagiotis Sismanidis2017 год

Quality of Crowdsourced Data on Urban Morphology—The Human Influence Experiment (HUMINEX)
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Аннотация: The World Urban Database and Access Portal Tools (WUDAPT) is a community initiative to collect worldwide data on urban form (i.e., morphology, materials) and function (i.e., use and metabolism). This is achieved through crowdsourcing, which we define here as the collection of data by a bounded crowd, composed of students. In this process, training data for the classification of urban structures into Local Climate Zones (LCZ) are obtained, which are, like most volunteered geographic information initiatives, of unknown quality. In this study, we investigated the quality of 94 crowdsourced training datasets for ten cities, generated by 119 students from six universities. The results showed large discrepancies and the resulting LCZ maps were mostly of poor to moderate quality. This was due to general difficulties in the human interpretation of the (urban) landscape and in the understanding of the LCZ scheme. However, the quality of the LCZ maps improved with the number of training data revisions. As evidence for the wisdom of the crowd, improvements of up to 20% in overall accuracy were found when multiple training datasets were used together to create a single LCZ map. This improvement was greatest for small training datasets, saturating at about ten to fifteen sets.
Год издания: 2017
Авторы: Benjamin Bechtel, Matthias Demuzere, Panagiotis Sismanidis, Daniel Fenner, Oscar Brousse, Christoph Beck, Frieke Van Coillie, Olaf Conrad, Iphigenia Keramitsoglou, Ariane Middel, Gerald Mills, Dev Niyogi, Marco Otto, Linda See, Marie-Leen Verdonck
Издательство: Multidisciplinary Digital Publishing Institute
Источник: Urban Science
Ключевые слова: Land Use and Ecosystem Services, Geographic Information Systems Studies, Human Mobility and Location-Based Analysis
Другие ссылки: Urban Science (PDF)
Urban Science (HTML)
Ghent University Academic Bibliography (Ghent University) (PDF)
Ghent University Academic Bibliography (Ghent University) (HTML)
OPUS (Augsburg University) (HTML)
Ghent University Academic Bibliography (Ghent University) (HTML)
IIASA PURE (International Institute of Applied Systems Analysis) (HTML)