Xiaoqing Frank Liu, Ruoqian, and Ravi Viswanathan, "An Intelligent Tool for Imprecise Software Quality Requirements Analysis", Proc. of the Tenth International Conference on Software Engineering and Knowledge Engineering", San Francisco, California, June 18-20, 1998, pp. 2-9.
Xiaoqing Frank Liu, and Ruoqian Jia, "Intelligent House of Quality", The Transactions of the 10th Symposium on QFD, June, Michigan.
Wen F. Lu, Xiaoqing Frank Liu, Hsin-Chin Chang, and Lijun Dong, "Case Retrieving for a Responsive Machining Process Planning System", the Proceedings of 1998 NSF Design and Manufacturing Grantee's Conference, January, 1998.
Xiaoqing Frank Liu, "HOOM: A High Order Object-Oriented Model for Software Requirements Analysis", Proc. of the IASTED International Conference on Software Engineering, San Francisco, CA, Nov., 1997.
Wen F. Lu, Xiaoqing Frank Liu, Hsin-Chin Chang, and Lijun Dong, "Feature-based Representation and Indexing of Axisymmetric Parts in Machining Process Planning using Case-based Reasoning", Proc. of the 9th IEEE International Conference on Tools with Artificial Intelligence , Newport Beach, CA, Nov. 1997.
Xiaoqing Frank Liu and Hungwen Winston Lin, "High-order Object Model Based Software Analysis", Proc. of the 1997 IEEE International Conference on Computer Software and Application(COMPSAC97), Washington, D.C., August, 1997.