Table 4 The RANSAC-DE inversion results in different parameter search ranges.

From: Robust parameter inversion of coal mining subsidence based on the combination of RANSAC and DE algorithms

Parameter

q

\(tan\beta\)

\(\theta /^{\circ }\)

\(S_{l}/m\)

\(S_{r}/m\)

\(S_{u}/m\)

\(S_{d}/m\)

Design value

0.8

2

86

40

40

40

40

Rang 1

Average value

0.799

1.9912

86.0659

40.5024

40.679

39.6628

39.2574

Relative Error

0.13%

0.44%

0.08%

1.26%

1.70%

0.84%

1.86%

Rang 2

Average value

0.8011

1.9919

86.1145

38.8453

39.0908

40.6799

41.1144

Relative Error

0.14%

0.41%

0.13%

2.89%

2.27%

1.70%

2.79%

Rang 3

Average value

0.7971

2.0113

85.9022

41.139

40.6448

39.0432

38.8893

Relative Error

0.36%

0.57%

0.11%

2.85%

1.61%

2.39%

2.78%

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