Explicit preference elicitation for task completion time

Mohammadreza Esfandiari, Senjuti Basu Roy, Sihem Amer-Yahia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


Current crowdsourcing platforms provide little support for worker feedback. Workers are sometimes invited to post free text describing their experience and preferences in completing tasks. They can also use forums such as Turker Nation1 to exchange preferences on tasks and requesters. In fact, crowdsourcing platforms rely heavily on observing workers and inferring their preferences implicitly. On the contrary, we believe that asking workers to indicate their preferences explicitly will allow us to improve different processes in crowdsourcing platforms. We initiate a study that leverages explicit elicitation from workers to capture the evolving nature of worker preferences and we propose an optimization framework to better understand and estimate task completion time. We design a worker model to estimate task completion time whose accuracy is improved iteratively by requesting worker preferences for task factors, such as, required skills, task payment, and task relevance. We develop efficient solutions with guarantees, run extensive experiments with large scale real world data that show the benefit of explicit preference elicitation over implicit ones with statistical significance.

Original languageEnglish (US)
Title of host publicationCIKM 2018 - Proceedings of the 27th ACM International Conference on Information and Knowledge Management
EditorsNorman Paton, Selcuk Candan, Haixun Wang, James Allan, Rakesh Agrawal, Alexandros Labrinidis, Alfredo Cuzzocrea, Mohammed Zaki, Divesh Srivastava, Andrei Broder, Assaf Schuster
PublisherAssociation for Computing Machinery
Number of pages10
ISBN (Electronic)9781450360142
StatePublished - Oct 17 2018
Event27th ACM International Conference on Information and Knowledge Management, CIKM 2018 - Torino, Italy
Duration: Oct 22 2018Oct 26 2018

Publication series

NameInternational Conference on Information and Knowledge Management, Proceedings


Other27th ACM International Conference on Information and Knowledge Management, CIKM 2018

All Science Journal Classification (ASJC) codes

  • General Decision Sciences
  • General Business, Management and Accounting


Dive into the research topics of 'Explicit preference elicitation for task completion time'. Together they form a unique fingerprint.

Cite this