"Interval rule matrix and Taylor methods for network intrusion detection" Chenyi Hu Computer Science Department University of Central Arkansas Knowledge discovery and acquisition have been a very active area in both scientific research and real word applications. Recently, we have built an interval valued fuzzy rule matrix model for decision making systems; and applied it for network intrusion detection systems (IDS) with mining network state database. In that model, a decision is selected according to a predefined threshold and an index that obtained from historical data. In real time IDS, one need to consider the evolution of the rules. We believe that Taylor methods can play an important role for this purpose, and will discuss a few basic ideas. References: 1. A. de Korvin, C. Hu, and P. Chen, Generating and Applying Rule for Interval Valued Fuzzy Observations, Lecture Notes in Computer Science, Vol. 3177, pp. 279-284, Springer-Verlag, 2004 2. Q. Duan, C. Hu, and H. Wei, Enhancing Network Intrusion Detection Systems with Interval Methods, the 20th ACM Symposium on Applied Computing, to appear, 2005