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SIGKDD, January 2000. Volume 1, Issue 2 – page 69 Figure 1: Decision Tree No. 1 for “smurf” pattern SIGKDD Explorations. Copyright  2000 ACM SIGKDD, January 2000. Volume 1, Issue 2 – page 70 Figure 2: [...] Dos U2R R2L Normal 0 1 2 2 2 Probe 1 0 2 2 2 Dos 2 1 0 2 2 U2R 3 2 2 0 2 R2L 4 2 2 2 0 Table 3: Cost Matrix SIGKDD Explorations. Copyright  2000 ACM SIGKDD, January 2000. Volume 1, Issue 2 – page 73 Figure [...] January 2000. Volume 1, Issue 2 – page 68 We searched for the required patterns on the available training 10% dataset consisting of 494,021 records, for the following reasons: 1) The hypothesis that the …