Motivation Instantaneous constraint is too strong sometimes Waiting for response Accuracy: 70%)( Accuracy: 95% 加点小费②000 Passengers can wait for a short time drivers nearby have before being served received your order 17:00 17:30 Requseters are willing 02:54 to wait for more I have a task of labeling 500 reliable workers pictures If nodes can wait(match in a batch manner) More information can be gathered Likely to meet better candidates in the future I LKazemiet al, Geocrowd: enablingquery answering with spatial crowdsourcing In GIS 2012.⚫ Instantaneous constraint is too strong sometimes ⚫ If nodes can wait (match in a batch manner) ⚫ More information can be gathered ⚫ Likely to meet better candidates in the future Motivation 7 Waiting for response 2 drivers nearby have received your order Passengers can wait for a short time before being served Requseters are willing to wait for more reliable workers 17:00 17:30 I have a task of labeling 500 pictures Accuracy:70% Accuracy:95% L. Kazemi et al. Geocrowd: enabling query answering with spatial crowdsourcing. In GIS 2012