Contract Theory for Wireless Networks by Yanru Zhang & Zhu Han

Author:Yanru Zhang & Zhu Han
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

One obvious advantage of rank-order tournament over absolute performance rewards is that ordinal ranking is easy to measure and hard to manipulate (Bolton and Dewatripont 2004). In a tournament, the principal has to offer the fixed amount of rewards no matter who wins. In this chapter, we will propose a multi-user design that rewards users’ performance in crowdsourcing by a tournament reward structure based on the rank order. A brief illustration of crowdsourcing tournament rewarding mechanism is shown in Fig. 4.1. After obtaining the data from the users, the principal will generate an ascending list regarding user’s performance. Here, user 1 achieves the highest performance and will be rewarded the highest amount reward 4, while user 2 performs worst with the smallest amount of reward 1.

The main contributions to this chapter are as follows: First, we solve the incentive problem in crowdsourcing by offering user reward based on their performance. Second, we consider a tournament structure incentive mechanism that rewards users by their rank orders which can overcome the common shock problem. Third, in the simulation part, we introduce another well-known tournament mechanism for comparison purposes in order to demonstrate the effectiveness of tournament mechanisms to improve the principal’s utility. The proposed mechanisms allow the principal to successfully maximize the utilities and the users to obtain continuous incentives to participate in mobile crowdsourcing.

The remainder of this chapter is organized as follows. First, we will introduce the network model in Sect. 4.2. Then, the design of tournament is described in Sect. 4.3, in which we also give the analysis of the optimal contract with full information. The performance evaluation is conducted in Sect. 4.4. Finally, summaries are given in Sect. 4.5.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.