8Turney P D,Littman M L. Measuring Praise and Critism: In- ference of Semantic Orientation from Association[J]. ACM Trans on Information Systems,2003,21(4):315- 346.
9Turney P. Thumbs Up or Thumbs Down? SemanticOrienta tion Applied to Unsupervised Classification of Reviews[C]// Proc of the 40th Annual Meeting of the Association for Com- putational Linguistics,2002 :417-424.
10Liu Hugo,Lieberman H,SelKer T. A Model of Textual Af- fect Sensing Using Real- World Knowledge[C]//Proc of the 2003 Int'l Conf on Intelligent User Interfaces, 2003:125- 132.