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  • Copernicus GmbH  (2)
  • 1
    Online Resource
    Online Resource
    Copernicus GmbH ; 2022
    In:  AGILE: GIScience Series Vol. 3 ( 2022-06-10), p. 1-10
    In: AGILE: GIScience Series, Copernicus GmbH, Vol. 3 ( 2022-06-10), p. 1-10
    Abstract: Abstract. Shared electric scooters (e-scooters) have been rapidly growing in popularity across Europe over the past three years, which can bring various environmental and socioeconomic benefits. However, how to further improve the usage efficiency of shared e-scooters is still a major concern for micro-mobility operators and city planners. This paper proposes a machine learning based approach to predict the usage efficiency of shared e-scooters using GPS-based vehicle availability data. First, the usage efficiency of shared e-scooters is measured with the indicator Time to Booking at the trip level. Second, ten exploratory variables in time and space are calculated as features for the prediction based on the e-scooter trips and other related data. Last, three typical machine learning methods, including logistical regression, artificial neural network and random forest are applied to predict the usage efficiency by inputting the features. Besides, the variable importance is evaluated by taking the random forest model as an example. The results show that the random forest model yields the best prediction performance (accuracy = 71.2%, F1 = 78.0%), and the variables like the hour of day and POI density present high variable importance. The findings of this study will be beneficial for micro-mobility operators and city planners to design policies and strategies for further improving the usage efficiency of e-scooter sharing services.
    Type of Medium: Online Resource
    ISSN: 2700-8150
    Language: English
    Publisher: Copernicus GmbH
    Publication Date: 2022
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  • 2
    In: AGILE: GIScience Series, Copernicus GmbH, Vol. 3 ( 2022-06-11), p. 1-9
    Abstract: Abstract. This study assesses the potential benefit of Blue-Green Solutions (BGS), green rooftops, rain gardens, permeable pavements, and bioswales, in Lisbon, Portugal. These proposed mitigation measures are applied using TFM-DYN (Nilsson et al., 2021) to simulate potential fluvial flooding distributions from a 10- and 50-year rain event.Water depth of over 30 centimeters can cause damage to infrastructure. The model results show water depths of over 40 centimeters in some parts of the study area for the 10-year return period, raising the need for action. For the 50-year return period even more areas will be affected. These floods can occur at a relatively rapid pace. Four BGS were implemented for flood mitigation. Areas with green roofs and rain gardens showed a lowering in water depth for both return periods. This study shows that even relatively simple data allows for an estimation of urban flooding and the potential effect of BGS for specific locations can easily be determined.
    Type of Medium: Online Resource
    ISSN: 2700-8150
    Language: English
    Publisher: Copernicus GmbH
    Publication Date: 2022
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
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