Multi-stage complex task assignment in spatial crowdsourcing

Zhao Liu, Kenli Li, Xu Zhou, Ningbo Zhu, Yunjun Gao, Keqin Li

Abstract: Highlights•In spatial crowdsourcing system, workers are requested to physically move to particular locations to conduct the assigned tasks.•Multi-stage tasks are composed of subtasks with dependencies, which affect task assignment efficiency and task completion rate.•Complex tasks oriented spatial crowdsourcing needs to assign a set of multi-skilled workers to each complex subtask to meet the constraint of skills.