{
  "annotation_id": "d35dd1a7-2017-4788-a0f7-c5234312bfd3",
  "date_created": "2026-03-02T18:01:10.868000Z",
  "date_modified": "2026-03-02T18:01:10.868000Z",
  "file_hash": "870b110478ecafb08c88c27c958465b15aa57fbb1c520a65e97b913b8114070c",
  "private": false,
  "record": {
    "abstract": "The minimum spanning tree is used to study the process of market integration\nfor a large group of national stock market indices. We show how the asset tree\nevolves over time and describe the dynamics of its normalized length, mean\noccupation layer, and single- and multiple-step linkage survival rates. Over\nthe period studied, 1997-2006, the tree shows a tendency to become more\ncompact. This implies that global equity markets are increasingly interrelated.\nThe consequence for global investors is a potential reduction of the benefits\nof international portfolio diversification.",
    "arxiv_id": "physics/0607022",
    "authors": [
      "Ricardo Coelho",
      "Claire G. Gilmore",
      "Brian Lucey",
      "Peter Richmond",
      "Stefan Hutzler"
    ],
    "categories": [
      "physics.soc-ph"
    ],
    "doi": "10.1016/j.physa.2006.10.045",
    "journal_ref": "Physica A 376, 455 (2007)",
    "title": "The Evolution of Interdependence in World Equity Markets - Evidence from   Minimum Spanning Trees",
    "url": "https://arxiv.org/abs/physics/0607022"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1732092e-dba0-4aba-8be7-d1c5f271bb56",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}