Figure 5
The figure contains six scatter plots. labeled from Part (a) to (f). All graphs share the same axis structure: the horizontal axis is labeled “Real Thermal Conductivity (watts per (meter kelvin))” and ranges from 0.0 to 1.5 in increments of 0.5, while the vertical axis is labeled “Predicted Thermal Conductivity (watts per (meter kelvin))” and also ranges from 0.0 to 1.5 in increments of 0.5 watts per meter kelvin. Each graph contains a solid black diagonal line extending from (0.0, 0.0) to (1.5, 1.5). Two dashed magenta lines run parallel to the diagonal line: one labeled “positive 20 percent” extending from approximately (0.0, 0.0) to (1.2, 1.5), and another labeled “negative 20 percent” extending from approximately (0.0, 0.0) to (1.5, 1.2). Part (a) is titled “G P R” with “R squared equals 0.88” displayed. Blue data points are closely clustered along the diagonal line, showing a strong positive correlation between predicted and real values. Points range from 0.0 to approximately 1.0 on both axes, with minimal scatter throughout. Part (b) is titled “E T” with “R squared equals 0.84” displayed. The blue data points show moderate scatter along the diagonal line, with more density from 0.0 to 0.5 on both axes. Points range from 0.0 to approximately 1.0 on both axes, indicating a good but slightly weaker correlation than Part (a). Part (c) is titled “L R” with “R squared equals 0.49” displayed. The blue data points exhibit considerable scatter throughout the range, with most points clustered between 0.0 and 0.6 on both axes. Part (d) is titled “N N” with “R squared equals 0.86” displayed. The blue data points are moderately clustered along the diagonal line. Points range from 0.0 to approximately 1.0 on both axes, with some scatter at higher predicted conductivity values above 0.6. Part (e) is titled “R T” with “R squared equals 0.54” displayed. The blue data points show significant scatter with a horizontal clustering pattern, particularly around 0.4 to 0.7 on the vertical axis across various real conductivity values. Points extend from 0.0 to approximately 1.0 on the horizontal axis, indicating weak to moderate positive correlation. Part (f) is titled “S V M” with “R squared equals 0.73” displayed. The blue data points are moderately scattered along the diagonal line. Most points are concentrated between 0.0 and 0.6, with some extending to approximately 1.0 on both axes. The scatter increases at higher conductivity values, indicating moderate correlation. Note: All numerical values are approximated.Regression analysis of thermal conductivity for each model in the testing phase ((a) GPR, (b) ET, (c) LR, (d) NN, (e) RT and (f) SVM)