Spatial Crowdsourcing Spatial Crowdsourcing Platforms Help assign offline spatial tasks to online crowd workers e.g. Offline-to-Online(020)applications Task allocation/assignment is the most important Task Allocation/Assignment Quality Control Privacy Protection⚫ Spatial Crowdsourcing Platforms ⚫ Help assign offline spatial tasks to online crowd workers ⚫ e.g. Offline-to-Online (O2O) applications ⚫ Core Challenges ⚫ Task Allocation/Assignment ⚫ Quality Control ⚫ Privacy Protection ⚫ …… Spatial Crowdsourcing Task allocation/assignment is the most important ! 8