2Santoro F M,Borges R S.An Infrastructure to Support Development of Collaborative Project-based Learning Environments[C].Proceedings of IEEE CRIWG'00,Portugal,2000-10-18:78-85. 被引量：1
3Storey M A,Phillips B,Maczewski M,et al.Evaluating the Usability of Web-based Learning Tools[J].Educational Technology & Society Journal,2002,5(3). 被引量：1
5Guha S,Rastogi R,Shim K.CURE:An Efficient Clustering Algorithm for Large Databases[C].Seattle:Proceedings of the ACM SIGMOD Conference,1998.73-84. 被引量：1
6Guha S,Rastogi R,Shim K.ROCK:A Robust Clustering Algorithm for Categorical Attributes[C].Sydney:Proceedings of the 15th ICDE,1999.512-521. 被引量：1
8Ester M,Kriegel H-P,Sander J,et al.A Density-based Algorithm for Discovering Clusters in Large Spatial Databases with Noise[C].Portland:Proceedings of the 2nd ACM SIGKDD,1996.226-231. 被引量：1
9Hinneburg A,Keim D.An Efficient Approach to Clustering Large Multimedia Databases with Noise[C].New York:Proceedings of the 4th ACM SIGKDD,1998.58-65. 被引量：1
10Wang W,Yang J,Muntz R.STING:A Statistical Information Grid Approach to Spatial Data Mining[C].Athens:Proceedings of the 23rd Conference on VLDB,1997.186-195. 被引量：1
