![]() When the task is completed, the worker delivers the output to the client. The client selects his/her preferred crowd worker. Registered crowd workers review the posted task and submit bids if they are interested in it. A client who wants to conduct a project work post a task description including outlining the details of the task, a proposed reward and a deadline at a CSP site. These CSPs provide project works, which have fixed objectives and deadlines. Crowd works, that is one of the largest CSP in Japan, has over two million registered crowd workers as of December 2018. For example, Upwork, one of the largest crowdsourcing providers (CSP), reported 14 million users in 180 countries with $1b in annual freelancer billings as of March 2017 ( Snagajob, 2017 Brier and Pearson, 2020). The full terms of this licence may be seen at Ĭrowdsourcing has been used in various areas and it has been recognized as an effective way of human resource utilization. Anyone may reproduce, distribute, translate and create derivative works of this article (for both commercial and non-commercial purposes), subject to full attribution to the original publication and authors. This article is published under the Creative Commons Attribution (CC BY 4.0) licence. Published in International Journal of Crowd Science. Copyright © 2020, Kousaku Igawa, Kunihiko Higa and Tsutomu Takamiya.
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