A force-directed network graph displays weighted relationships between named individuals, with nodes as circles and links as paths whose thickness reflects link value. The layout is computed using D3 v3's `d3.forceSimulation` (likely `d3.layout.force`), rendering to SVG with CSS styling for node fill, stroke, and text labels. Data is hardcoded as a JavaScript array of link objects specifying source, target, and numeric value, which drives node positioning without external data files.