{
  "schema_version": "1.0",
  "window": "2021-2025 pooled cross-section",
  "samples": [
    {
      "sample": "All group links",
      "links": 577,
      "dominated_links": 544,
      "share": 0.9428
    },
    {
      "sample": "At least three shared papers",
      "links": 126,
      "dominated_links": 103,
      "share": 0.8175
    },
    {
      "sample": "At least two researchers on each side",
      "links": 71,
      "dominated_links": 38,
      "share": 0.5352
    }
  ],
  "single_pair_links": 358,
  "interpretation": "Concentration depends on link size and the current researcher coverage. A roster alone does not demonstrate shared delivery, redundancy or continuity. These are anonymous group-link aggregates, not researcher rankings."
}