## 4 BP Neural Network and Pearson Correlation Analysis
### Computation Analysis
#### 4.2.1 Evaluation of Working Conditions
\begin{table}
\begin{tabular}{c c c c} \hline
**Index** & **Evaluation Indicators** & **Data** & **Remarks** \\ \hline \multirow{6}{*}{Working condition 1} & Sum of Square Errors, E\({}_{\text{SSE}}\) & 1.8906\(\cdot 10^{-12}\) & Fit between predicted and actual values \\ \cline{2-4}  & Mean Absolute Error, E\({}_{\text{MAE}}\) & 4.4939\(\cdot 10^{-7}\) & Average absolute difference between predicted and actual values \\ \cline{2-4}  & Mean Absolute Percentage Error, E\({}_{\text{MAP}}\) & 0.00055853 & Error across datasets with varying magnitudes \\ \cline{2-4}  & Mean Square Error, E\({}_{\text{MSE}}\) & 2.7008\(\cdot 10^{-13}\) & Mean square error of prediction discrepancies \\ \cline{2-4}  & Root Mean Square Error, E\({}_{\text{RMSE}}\) & 5.1969\(\cdot 10^{-7}\) & The square root of the mean square differences between predicted and actual values \\ \hline \multirow{6}{*}{Working condition 2} & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.00012022 & Fit between predicted and actual values \\ \cline{2-4}  & Mean Absolute Error, E\({}_{\text{MAE}}\) & 0.001514 & Average absolute difference between predicted and actual values \\ \cline{2-4}  & Mean Absolute Percentage Error, E\({}_{\text{MAP}}\) & 0.0036052 & Error across datasets with varying magnitudes \\ \cline{2-4}  & Mean Square Error, E\({}_{\text{MSE}}\) & 2.4043\(\cdot 10^{-6}\) & Mean square error of prediction discrepancies \\ \cline{2-4}  & Root Mean Square Error, E\({}_{\text{RMSE}}\) & 0.0015506 & The square root of the mean square differences between predicted and actual values \\ \hline \multirow{6}{*}{Working condition 3} & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.0001632 & Fit between predicted and actual values \\ \cline{2-4}  & Mean Absolute Error, E\({}_{\text{MAE}}\) & 0.0011673 & Average absolute difference between the predicted and actual values \\ \cline{2-4}  & Mean Absolute Percentage Error, E\({}_{\text{MAP}}\) & 0.0029131 & Error across datasets with varying magnitudes \\ \cline{2-4}  & Mean Square Error, E\({}_{\text{MSE}}\) & 1.9436\(\cdot 10^{-6}\) & Mean square error of prediction discrepancies \\ \cline{2-4}  & Root Mean Square Error, E\({}_{\text{RMSE}}\) & 0.0013941 & The square root of the mean square differences between predicted and actual values \\ \hline \multirow{6}{*}{Working condition 4} & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.0061557 & Fit between predicted and actual values \\ \cline{2-4}  & Mean Absolute Error, E\({}_{\text{MAE}}\) & 0.0096929 & Average absolute difference between the predicted values and actual values \\ \cline{2-4}  & Mean Absolute Percentage Error, E\({}_{\text{MAP}}\) & 0.023948 & Error across datasets with varying magnitudes \\ \cline{2-4}  & Mean Square Error, E\({}_{\text{MSE}}\) & 0.00012311 & Mean square error of prediction discrepancies \\ \cline{2-4}  & Root Mean Square Error, E\({}_{\text{RMSE}}\) & 0.011096 & The square root of the mean square differences between predicted and actual values \\ \hline \multirow{6}{*}{Working condition 5} & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.001105 & Fit between predicted and actual values \\ \cline{2-4}  & Mean Absolute Error, E\({}_{\text{MAE}}\) & 0.0046973 & Average absolute difference between the predicted values and actual values \\ \cline{2-4}  & Mean Absolute Percentage Error, E\({}_{\text{MAP}}\) & 0.0059697 & Error across datasets with varying magnitudes \\ \cline{2-4}  & Mean Square Error, E\({}_{\text{MSE}}\) & 2.21\(\cdot 10^{-5}\) & Mean square error of prediction discrepancies \\ \cline{2-4}  & Root Mean Square Error, E\({}_{\text{RMSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \hline \multirow{6}{*}{Working condition 6} & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.0064002 & Fit between predicted and actual values \\ \cline{2-4}  & Mean Absolute Error, E\({}_{\text{MAE}}\) & 0.0080078 & Average absolute difference between the predicted and actual values \\ \cline{2-4}  & Mean Absolute Percentage Error, E\({}_{\text{MAE}}\) & 0.028729 & Error across datasets with varying magnitudes \\ \cline{2-4}  & Mean Square Error, E\({}_{\text{MSE}}\) & 9.1432\(\cdot 10^{-5}\) & Mean square error of prediction discrepancies \\ \cline{2-4}  & Root Mean Square Error, E\({}_{\text{RMSE}}\) & 0.009562 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Root Mean Square Error, E\({}_{\text{RMSE}}\) & 0.009562 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Mean Absolute Percentage Error, E\({}_{\text{MAE}}\) & 0.0095692 & Average absolute difference between the predicted values and actual values \\ \cline{2-4}  & Mean Absolute Percentage Error, E\({}_{\text{MAE}}\) & 0.0095697 & Error across datasets with varying magnitudes \\ \cline{2-4}  & Mean Square Error, E\({}_{\text{MSE}}\) & 2.21\(\cdot 10^{-5}\) & Mean square error of prediction discrepancies \\ \cline{2-4}  & Root Mean Square Error, E\({}_{\text{RMSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \hline \multirow{6}{*}{Working condition 7} & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \hline \multirow{6}{*}{Working condition 8} & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \hline \multirow{6}{*}{Working condition 9 condition 1} & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.004701 & The square root of the mean square differences between predicted and actual values \\ \cline{2-4}  & Sum of Square Errors, E\({}_{\text{SSE}}\) & 0.