Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Cost and Quality Trade-Offs in Crowdsourcing

  • Lei Chen
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_80658

Synonyms

Incentive and performance trade-offs; Payment and quality trade-offs

Definition

In crowdsourcing, some tasks are conducted by the crowd due to enjoyment [8] or social reward [6]. However, arbitrary tasks are seldom enjoyable, and social award is often associated to some specific tasks, such as Wikipedia (https://en.wikipedia.org/wiki/Main_Page) and Stack Overflow (http://stackoverflow.com/). Thus, given an arbitrary task, a requester often needs to offer incentive (i.e., the cost of the task) to motivate workers to conduct the task. The cost per task is often paid in the form of financial compensation, a few cents per task. The quality of a crowdsourcing task is often referred as accuracy. Since the workers are humans, which may make errors when they perform tasks, the results returned by the crowd will have errors as a consequence. The trade-offs between cost and quality refer to the relationships between the financial incentive and the performance.

Historical Background

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Hong Kong University of Science and TechnologyHong KongChina