Table 5.
Graphical display options and statistical analysis methods in iLearnPlus
| Category | Types | Purpose |
|---|---|---|
| Graphic display options | Histogram | Display data distribution |
| Kernel density plot | Display data distribution | |
| Heatmap | Display P-value/correlation matrix between different models | |
| Scatter plot | Display clustering and dimensionality reduction result | |
| Boxplot | Depict the group values in the K-fold cross-validation for each of the eight metrics | |
| ROC curve | Depict the overall performance of a model for balanced data | |
| PRC curve | Depict the overall performance of a model for un-balanced data | |
| Statistical analysis | Student's t-test | Compare the means of two evaluate metric |
| Bootstrap test | Evaluate the significance of performance difference between all pairs of ROC or PRC curves |