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• W2086804918 abstract "This is the first study of crowdsourcing Pareto-optimal object finding over partial orders and by pairwise comparisons, which has applications in public opinion collection, group decision making, and information exploration. Departing from prior studies on crowdsourcing skyline and ranking queries, it considers the case where objects do not have explicit attributes and preference relations on objects are strict partial orders. The partial orders are derived by aggregating crowdsourcers' responses to pairwise comparison questions. The goal is to find all Pareto-optimal objects by the fewest possible questions. It employs an iterative question-selection framework. Guided by the principle of eagerly identifying non-Pareto optimal objects, the framework only chooses candidate questions which must satisfy three conditions. This design is both sufficient and efficient, as it is proven to find a short terminal question sequence. The framework is further steered by two ideas---macro-ordering and micro-ordering. By different micro-ordering heuristics, the framework is instantiated into several algorithms with varying power in pruning questions. Experiment results using both real crowdsourcing marketplace and simulations exhibited not only orders of magnitude reductions in questions when compared with a brute-force approach, but also close-to-optimal performance from the most efficient instantiation." @default.
• W2086804918 created "2016-06-24" @default.
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• W2086804918 date "2015-10-17" @default.
• W2086804918 modified "2023-09-24" @default.
• W2086804918 title "Crowdsourcing Pareto-Optimal Object Finding By Pairwise Comparisons" @default.
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• W2086804918 doi "https://doi.org/10.1145/2806416.2806451" @default.
• W2086804918 hasPublicationYear "2015" @default.
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