Figure 11
From: Accurate measurement techniques and prediction approaches for the in-situ rock stress
Comparison of the mean relative errors of the σH (a), σh (b), and σv (c) predicted by the GM, BPNN, and embedded GM–BPNN models in the seven mines (SSDGM = Sanshandao gold mine, XCGG = Xincheng gold mine, LLGM = Linglong gold mine, PDS1M = Pingdingshan No. 1 mine, PDS10M = Pingdingshan No. 10 mine, MSIM = Meishan iron mine, and BMHIM = Beiminghe iron mine).
