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Table 3 Feature subset of Rank1, Rank 2, Rank 3 and Rank 4

From: Vote-Based Feature Selection Method for Stratigraphic Recognition in Tunnelling Process of Shield Machine

Feature rank

Feature subset

Features number

Rank 1

Only 135

1

Rank 2

194,189,184,175,170,161,154,148,122,90,89, 86

12

Rank 3

193, 183, 174, 160, 159, 158, 142, 136, 132, 119, 109, 94, 91, 88, 87, 57, 50, 25, 21, 14, 2

21

Rank 4

191, 186, 179, 153, 152, 151, 150, 149, 145, 144, 143, 141, 106, 104, 103, 100, 99, 98, 96, 79, 69, 60, 53, 51, 48, 45, 39, 29, 24, 23, 22, 20, 19, 16, 11, 6, 0

37