Table 2 Correlation Kendall’s W analysis results

From: Deep learning framework based on ITOC optimization for coal spontaneous combustion temperature prediction: a coupled CNN-BiGRU-CBAM model

Name

Ordinal mean

Upper quartile

Kendall’s W factor

X2

P

Experimental temperature (℃)

5.717

103.195

0.832

1678.314

0.000***

O2 (%)

4.092

14.66

   

CO (ppm)

6.985

879.5

   

C2H4 (ppm)

2.839

2.735

   

CO/△O2

2.649

1.695

   

C2H4/C2H6

1.235

0.05

   

C2H6

4.482

43.15

   
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