Figure 4. Flowchart of prediction model. 3. Comparison and Selection of ML Models As in previous studies [44,45,46], 13 ML regression models have been used to predict the X-PPV, Y-PPV, and Z-PPV in underground metal mines. To eliminate dimensional effects and balance the weights of inp...
Figure 4. Flowchart of the proposed algorithm. (a–f) are the schematic diagrams corresponding to each step of the proposed method. 3.1. Binary Map In this section, we convert each frame of data collected by LiDAR into a binary map. The original range data obtained by LiDAR contain invalid...
The former includes all those local parameters that characterize the mining area under the current condition. In contrast, the latter consists of some information from the PPC’s mining experience and the mining history of the previous years. Figure 2. Pseudo-flowchart of the applied methodology. ...
Figure 1.System flowchart for coal mine occupational safety, health management and risk control. This system manages to implement all functions needed for coal mine occupational safety, health management and risk control, with each function delivered by the corresponding module. According to the above...