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<p>Collaboration among social groups influences how communities respond to crises. However, there is limited understanding of how cross-group collaboration evolves during crises and how it affects network effectiveness. Here we propose a topological framework based on zigzag persistence to track higher-order group collaborations as time-varying simplicial complexes. Using 6.6 million volunteer activity records from Shenzhen, China, we characterize how pandemic waves and urban characteristics affect higher-order collaboration. We then evaluate these structures against an effectiveness metric, using a Shenzhen-based agent-based model and the global MapSwipe crisis-mapping platform for validation, finding that collaboration structures beyond pairwise interactions are more strongly associated with effectiveness than standard connectivity measures. These findings suggest that higher-order collaborations are a generic feature of crisis response and can inform strategies to improve collective action during large-scale emergencies.</p>

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The evolution and impact of group collaboration in crisis response

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月11日

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  • Anping Zhang,
  • Dexu Kong,
  • Jiahao Lai,
  • Guoqing Zhang,
  • Jiayang Li,
  • Yue Wang,
  • Yang Li,
  • Marta C. González

摘要

Collaboration among social groups influences how communities respond to crises. However, there is limited understanding of how cross-group collaboration evolves during crises and how it affects network effectiveness. Here we propose a topological framework based on zigzag persistence to track higher-order group collaborations as time-varying simplicial complexes. Using 6.6 million volunteer activity records from Shenzhen, China, we characterize how pandemic waves and urban characteristics affect higher-order collaboration. We then evaluate these structures against an effectiveness metric, using a Shenzhen-based agent-based model and the global MapSwipe crisis-mapping platform for validation, finding that collaboration structures beyond pairwise interactions are more strongly associated with effectiveness than standard connectivity measures. These findings suggest that higher-order collaborations are a generic feature of crisis response and can inform strategies to improve collective action during large-scale emergencies.