Research Article

Research on Recognition of Quiet Period of Sandstone Acoustic Emission Based on Four Machine Learning Algorithms

Table 3

The ratio of energy coefficients of wavelet packets in each frequency band.

Ratio of energy coefficient of wavelet packet 1Ratio of energy coefficient of wavelet packet 2Ratio of energy coefficient of wavelet packet 3Ratio of energy coefficient of wavelet packet 4Ratio of energy coefficient of wavelet packet 5Ratio of energy coefficient of wavelet packet 6Ratio of energy coefficient of wavelet packet 7Ratio of energy coefficient of wavelet packet 8

8.58919913.09063621.07483137.7218080.38327242.11834156.603727410.41818
1.0385353.266809921.92149229.6307740.03438930.180815529.00775514.91942
3.209801.433307117.0642629.07672670.25041161.482153926.03135641.45197
4.338165.1364182625.6909422616.4393780.1478466060.429746643.64222934.175268