This example displays a hierarchical tree of machine learning algorithms, organized from broad categories like classical learning and ensemble methods down to specific techniques such as linear regression and XGBoost. The D3 v5 code uses a `tree()` layout with `linkHorizontal` paths to draw the branching structure, while `zoom` enables panning and scaling. Node labels are rendered as SVG `<text>` elements, and the visualization is generated from a local `data.json` file.