Volume 28, Issue 5 pp. 1065-1089
RESEARCH ARTICLE

Unraveling the relationship between coastal landscapes and sentiments: An integrated approach based on social media data and interpretable machine learning methods

Haojie Cao

Haojie Cao

Urban Computing and Visualization Lab, School of Resource and Environmental Sciences, Wuhan University, Wuhan, China

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Min Weng

Min Weng

Urban Computing and Visualization Lab, School of Resource and Environmental Sciences, Wuhan University, Wuhan, China

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Mengjun Kang

Corresponding Author

Mengjun Kang

Urban Computing and Visualization Lab, School of Resource and Environmental Sciences, Wuhan University, Wuhan, China

Correspondence

Mengjun Kang and Shiliang Su, School of Resource and Environmental Sciences, Wuhan University, Wuhan, China.

Email: [email protected] and [email protected]

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Shiliang Su

Corresponding Author

Shiliang Su

Urban Computing and Visualization Lab, School of Resource and Environmental Sciences, Wuhan University, Wuhan, China

Correspondence

Mengjun Kang and Shiliang Su, School of Resource and Environmental Sciences, Wuhan University, Wuhan, China.

Email: [email protected] and [email protected]

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First published: 07 May 2024
Citations: 2

Abstract

Coastal landscapes exert a significant impact on the human sentimental perceptions and physical and mental well-being of people. However, little is known about explicitly linking between the landscape characteristics and people's sentimental preferences expressed in social media data. The main objective of this study was to explore the nonlinear and interaction effects of key factors that influenced sentiments in the coastal areas of Hong Kong, considering both subjective landscape preferences and objective landscape patterns. We quantified users' sentiment polarity based on the crowdsourcing textual data of Flickr. To study users' subjective landscape preferences, we computed various visual landscape objects' proportion in images. Meanwhile, eight user clusters and nine image clusters were detected by the identified visual object labels. We quantified objective landscape patterns considering the land use pattens and the availability of public service facilities. Finally, we utilized an interpretable classification model to analyze the factors that may affect sentiments and their interplay interactions. We found that ecotourism-related clusters exhibited the most positive sentiment. The proportion of floor and sky pixels in images exhibits the highest global relative importance when predicting sentiments. This study extends a new insight on the relationship between landscape characteristics and sentiments from both subjective and objective perspectives based on social media data and interpretable machine learning methods. This research may help decision-makers in designing landscapes that aptly satisfy to the needs of the public and promote sustainable management of the coastal environment.

CONFLICT OF INTEREST STATEMENT

No potential conflict of interest was reported by the author(s).

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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