HierarchicalNets for multi level hierarchical classification of yoga poses.

Urban parks are an essential component of urban public green infrastructure. They provide settings for everyday recreation and social interaction, and they play a foundational role in improving environmental quality and supporting psychological and physiological well-being. As lifestyles diversify and living standards rise, public expectations for urban park recreation have increased, with growing emphasis on activity diversity, participation, autonomy, and professional service quality. At the same time, urban parks commonly face heightened management pressures during peak periods, including crowding and competition for space, visible complaints about cleanliness and maintenance, and disputes over how to priorities competing needs under constrained resources. Activities that involve longer stays and stronger space occupation amplify these pressures, because operational weaknesses accumulate over time into dissatisfaction and governance tension, and can further trigger disputes related to order and fairness. Against this social backdrop, urban nature-based leisure practices have proliferated and are increasingly becoming a key object of service provision in urban parks. Such practices typically involve diverse participation modes, longer stays, stronger space occupation, and more pronounced externalities, making structural tensions between experiential benefits and governance constraints more likely. On the one hand, they extend the public-service functions and nature-experience value of urban parks. On the other hand, they are more likely to expose coupled contradictions among activity provision, environmental comfort, facility assurance, and order maintenance. Accordingly, activity-oriented experience research on emerging urban nature-based leisure practices has clear governance relevance and a distinct academic focus: under high-density public-space conditions, how activity-specific experience dimensions take shape, and how experience gaps and perceived conflicts are triggered and persist over time. Urban park camping is one of the most representative forms of these emerging practices. Compared with short-duration park visits, camping involves longer stays and temporary occupation of lawn space, and it relies more heavily on on-site service conditions and orderly use. It combines relaxation and leisure, family-oriented social interaction, and comfort-oriented environmental experience within a single activity context. Because the duration and space occupation are higher, experiential benefits, expressions of dissatisfaction, and governance constraints are more likely to co-occur within the same practice. This makes camping a clearer activity-scale entry point for understanding the formation of experience gaps and the emergence of perceived conflicts in high-density public spaces.