The results of ANFIS model with error indices including coefficient of determination value of 0.97 and root mean square error value of 0.03 was so suitable.
Hence, in this study, the genetic algorithm is used to find optimal values of isolator parameters, including coefficient of friction, mass of base raft and the damping ratio of the restoring force device.
Recently, researchers have studied and developed some innovative dry coal beneficiation technologies depending on not only the density difference, but the difference of other properties including coefficient of friction and shape.
The proposed approach is compared to standalone ANN models and validated using well-known statistical validation metrics including coefficient of determination (R2), root mean square error (RMSE), mean bias error (MBE), mean absolute percentage error (MAPE), and t-statistics.
The overall performance of the ANN model can be assessed by several criteria including coefficient of determination (R2), mean squared error, mean absolute error, minimal absolute error, and maximum absolute error.
Energy benefits, economic and environmental impacts were further indicated through four indices including coefficient of performance (COP), energy payback time (EPT), cost payback time (CPT) and CO2 reduction ratio (CRR).
To achieve the best performance model, a scoring table was proposed considering several factors including coefficient of determination, sum of errors, difference between training and testing errors, sum of residuals, deviation of predicted results from experimental one and complexity and generality of the models.
Standard metrics for comparing measurement properties of the two MoCA scoring systems were also calculated including coefficient of variation, percentage at ceiling and kurtosis (deviation from normal distribution).
All estimates (including coefficient of regressions and variance estimates) incorporated bootstrap replicate survey weights to accurately reflect the demographics of the Canadian population and account for the survey sampling design based on selection probabilities and post stratification adjustments.
12245_2014_25_MOESM1_ESM.docx Additional file 1 A full account of the models (including coefficients of overall fit).
