Applying Catastrophe Theory for Network Anomaly Detection in Cloud Computing Traffic

Table 5

Comparison of processing time in calculating randomness for each day in test weeks.

Weeks include test data▶	W4	W4	W4	W4	W4	W5	W5	W5	W5	W5
Execution time of Xiong et al. Randomness algorithm [sec]	0.104	0.124	0.11	0.117	0.147	0.123	0.125	0.129	0.142	0.161
Execution time of our Randomness algorithm [sec]	0.084	0.094	0.079	0.074	0.078	0.084	0.087	0.089	0.094	0.097
Differences between two time [sec]	0.02	0.03	0.031	0.043	0.069	0.039	0.038	0.04	0.048	0.064
Improvement percentage (%)	19.23	24.19	28.18	36.75	46.94	31.71	30.40	31.01	33.80	39.75