作者: Hyunjung Park , Hector Garcia-Molina , Richard Pang , Neoklis Polyzotis , Aditya Parameswaran
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摘要: Deco is a system that enables declarative crowdsourcing: answering SQL queries posed over data gathered from the crowd as well existing relational data. implements novel push-pull hybrid execution model in order to support flexible and precise query semantics, while coping with combination of latency, monetary cost, uncertainty crowdsourcing. We demonstrate using two crowdsourcing platforms: Amazon Mechanical Turk an in-house platform, show how provides convenient means collecting querying crowdsourced