An analytical study of GWAP-based geospatial tagging systems

Ling Jyh Chen*, Yu Song Syu, Bo Chun Wang, Wang Chien Lee

*此作品的通信作者

研究成果: 書貢獻/報告類型會議論文篇章

2 引文 斯高帕斯(Scopus)

摘要

Geospatial tagging (geotagging) is an emerging and very promising application that can help users find a wide variety of location-specific information, and facilitate the development of future location-based services. Conventional geotagging systems share some limitations, such as the use of a two-phase operating model and the tendency to tag popular objects with simple contexts. To address these problems, geotagging systems based on the concept of 'Games with a Purpose' (GWAP) have been developed recently. In this study, we use analysis to investigate these new systems. Based on our analysis results, we design three metrics to evaluate the system performance, and develop five task assignment algorithms for a GWAP-based system. Using a comprehensive set of simulations under both synthetic and realistic mobility scenarios, we find that the Least-Throughput-First Assignment algorithm (LTFA)is the most effective approach because it can achieve competitive system utility, while its computational complexity remains moderate. We also find that, to improve the system utility, it is better to assign as many tasks as possible in each round. However, because players may feel annoyed if too many tasks are assigned at the same time, it is recommended that multiple tasks be assigned one by one in each round in order to achieve higher system utility.

原文英語
主出版物標題2009 5th International Conference on Collaborative Computing
主出版物子標題Networking, Applications and Worksharing, CollaborateCom 2009
DOIs
出版狀態已發佈 - 2009 十二月 1
事件2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing, CollaborateCom 2009 - Washington, DC, 美国
持續時間: 2009 十一月 112009 十一月 14

出版系列

名字2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing, CollaborateCom 2009

其他

其他2009 5th International Conference on Collaborative Computing: Networking, Applications and Worksharing, CollaborateCom 2009
國家/地區美国
城市Washington, DC
期間2009/11/112009/11/14

ASJC Scopus subject areas

  • 電腦網路與通信
  • 電腦科學應用
  • 軟體

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