Table 1 Results of different correlation coefficient analysis.

From: XGBoost algorithm optimized by simulated annealing genetic algrithm for permeability prediction modeling of carbonate reservoirs

Logging response

Pearson’s coefficient

Kendall’s coefficient

Spearman’s coefficient

Sorting

CNL

0.8326

0.8207

0.8521

1

DEN

0.8065

0.7946

0.8173

2

DT

0.7534

0.7345

0.7832

3

lnRT

0.6858

0.6927

0.7178

4

GR

0.6119

0.6592

0.6233

5

lnRXO

0.4902

0.4571

0.4818

6

SP

0.4269

0.3865

0.4056

7

CAL

0.3671

0.3747

0.3544

8

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