1Carnegie. Task Force on Teaching as a Profession, A nation prepared: Teachers for the 21st Century[R]. Washington: Camegie Forum on Education and the Economy, 1986.
2Russell S, Norvig P. Artificial intelligence: A modem approach[M].3rd ed. New York: Prentice Hall, 2010: 25-26.
3Jones M T. Artificial intelligence: A systems approach[M].London: Jones and Bartlett Publishers,2008: 265-275.
4Nilsson N J. Artificial intelligence: A new synthesis[M].San Francisco: Morgan Kaufmann Publishers, 1998:1-7.
5Luger G F. Artificial intelligence: Structures and strategies for complex problem solving[M].6th ed. New York: Addison Wesley, 2008: 673-702.