@article{chen2007reputation,
  abstract = {In this paper, we propose a user reputation model and apply it to a user-interactive question answering system. It combines the social network analysis approach and the user rating approach. Social network analysis is applied to analyze the impact of participant users' relations to their reputations. User rating is used to acquire direct judgment of a user's reputation based on other users' experiences with this user. Preliminary experiments show that the computed reputations based on our proposed reputation model can reflect the actual reputations of the simulated roles and therefore can fit in well with our user-interactive question answering system. Copyright © 2006 John Wiley & Sons, Ltd.},
  author = {Chen, Wei and Zeng, Qingtian and Wenyin, Liu and Hao, Tianyong},
  doi = {10.1002/cpe.1142},
  interhash = {c304f655ee6ee183e07192b9fed0d618},
  intrahash = {858df3646b706ce6308a12cbf1585d58},
  issn = {1532-0634},
  journal = {Concurrency and Computation: Practice and Experience},
  number = 15,
  pages = {2091--2103},
  publisher = {John Wiley & Sons, Ltd.},
  title = {A user reputation model for a user-interactive question answering system},
  url = {http://dx.doi.org/10.1002/cpe.1142},
  volume = 19,
  year = 2007
}

@inproceedings{yuen2009survey,
  abstract = {Human computation is a technique that makes use of human abilities for computation to solve problems. The human computation problems are the problems those computers are not good at solving but are trivial for humans. In this paper, we give a survey of various human computation systems which are categorized into initiatory human computation, distributed human computation and social game-based human computation with volunteers, paid engineers and online players. For the existing large number of social games, some previous works defined various types of social games, but the recent developed social games cannot be categorized based on the previous works. In this paper, we define the categories and the characteristics of social games which are suitable for all existing ones. Besides, we present a survey on the performance aspects of human computation system. This paper gives a better understanding on human computation system.},
  author = {Yuen, Man-Ching and Chen, Ling-Jyh and King, I.},
  booktitle = {Proceedings of the International Conference on Computational Science and Engineering, CSE '09},
  doi = {10.1109/CSE.2009.395},
  interhash = {69f9bd3e6a721f226e39e1f990e20286},
  intrahash = {8670a20dbf6aa9dd21da81ab78a1e333},
  month = aug,
  pages = {723--728},
  title = {A Survey of Human Computation Systems},
  url = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5283450&tag=1},
  volume = 4,
  year = 2009
}