This radial tree visualizes the hierarchical relationships among philosophy schools and associated philosophers, using a dataset from data.json. The layout applies d3.cluster to position nodes in a circular arrangement, with curved paths linking parent and child nodes. Text labels are rotated and glow-enhanced for readability, while d3.zoom enables panning and zooming across the visualization. The implementation uses D3 v4 APIs including d3.hierarchy, d3.cluster, and SVG path elements, with font sizes scaled by node depth.