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arXiv 2009.01966cs.HCcs.LG
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利用点击流轨迹揭示众包预测平台中的低质量工人

Leveraging Clickstream Trajectories to Reveal Low-Quality Workers in Crowdsourced Forecasting Platforms

University of Southern California, Information Sciences Institute(南加州大学信息科学研究所);University of Southern California, Department of Computer Science(南加州大学计算机科学系);University of Southern California, Department of Communication(南加州大学传播系)

Akira Matsui, Emilio Ferrara, Fred Morstatter, Andres Abeliuk, Aram Galstyan

摘要:

群策群力通常需要处理认知要求高且耗时的任务。众包可用于复杂的注释任务,从医学成像到地理空间数据,这些数据为敏感应用提供动力,例如健康诊断或自动驾驶。然而,表现不佳的众包工作者的存在和普遍性是公认的,并可能对众包的有效性构成威胁。在这项研究中,我们提出了一个计算框架,以确定集群的表现不佳的工人使用点击流轨迹。我们专注于众包地缘政治预测。该框架可以揭示不同类型的表现不佳者,例如预测准确性远远低于人群共识的工作人员,那些为他们的预测提供低质量解释的人,以及那些简单地复制粘贴其他用户预测的人。我们的研究表明,点击流聚类和分析是利用群体智慧诊断平台中众工绩效的基本工具。

英文摘要:

Crowdwork often entails tackling cognitively-demanding and time-consuming tasks. Crowdsourcing can be used for complex annotation tasks, from medical imaging to geospatial data, and such data powers sensitive applications, such as health diagnostics or autonomous driving. However, the existence and prevalence of underperforming crowdworkers is well-recognized, and can pose a threat to the validity of crowdsourcing. In this study, we propose the use of a computational framework to identify clusters of underperforming workers using clickstream trajectories. We focus on crowdsourced geopolitical forecasting. The framework can reveal different types of underperformers, such as workers with forecasts whose accuracy is far from the consensus of the crowd, those who provide low-quality explanations for their forecasts, and those who simply copy-paste their forecasts from other users. Our study suggests that clickstream clustering and analysis are fundamental tools to diagnose the performance of crowdworkers in platforms leveraging the wisdom of crowds.

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