Bulletin of Surveying and Mapping ›› 2024, Vol. 0 ›› Issue (5): 160-165.doi: 10.13474/j.cnki.11-2246.2024.0529

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A study on activity semantics and transformation characteristics of Beijing geo-tagged places from the perspective of youth perception

ZHAO Yuxin1,2,3,4, YUAN Junlei1,2,3,4, YI Disheng1,2,3,4, JIN Sijia1,2,3,4, ZHOU Huijun1,2,3,4, ZHANG Jing1,2,3,4   

  1. 1. Beijing Laboratory of Water Resources Security, Capital Normal University, Beijing 100048, China;
    2. Key Laboratory of 3-Dimensional Information Acquisition and Application, Capital Normal University, Beijing 100048, China;
    3. National Experimental Teaching Center of Urban Environmental Process and Digital Simulation, Capital Normal University, Beijing 100048, China;
    4. College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China
  • Received:2023-10-30 Published:2024-06-12

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Abstract: The youth group is passionate about documenting and sharing their life on social media platforms, making geo-tagged places one of the popular destinations for their outings and travels. The subjective experiences and feelings shared by users about geo-tagged places have been replicated and aggregated through the online space at the group level, affecting the functional attributes of these places. This study focuses on the area within the Sixth Ring Road of Beijing, using methods such as sentence vector representation, clustering, and multi-layer keyword extraction to obtain the activity semantics of the geo-tagged places. Based on this, the transformation between the functional and activity semantics of the geo-tagged places and their spatial distribution characteristics were analyzed using the diversity index and spatial clustering method. The results indicate that the activity semantics of geo-tagged places are more complex and diverse compared to functional semantics, reflecting a more human-centered perspective. The transformation between functional and activity semantics can be summarized as Combined, Consistent, and Derived. The characteristics of semantic transformation are closely related to regional functions, manifested in aspects such as the integration of historical culture, the mutual transformation of commercial complexes, and the meeting of diverse needs, thereby presenting a spatial distribution with clustering and regional characteristics.

Key words: youth perception, geo-tagged places, activity semantics, semantic transformation, BERT

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