{
  "annotation_id": "3c4ae773-98b2-42b0-b8be-78eab477838c",
  "date_created": "2026-03-02T18:01:14.821000Z",
  "date_modified": "2026-03-02T18:01:14.821000Z",
  "file_hash": "fa8025f2acaff1c6229d4e6d58a88ce475b0cd72524dbe07bf0457a75dd48adf",
  "private": false,
  "record": {
    "abstract": "We present an empirical analysis of the network formed by the trade\nrelationships between all world countries, or World Trade Web (WTW). Each\n(directed) link is weighted by the amount of wealth flowing between two\ncountries, and each country is characterized by the value of its Gross Domestic\nProduct (GDP). By analysing a set of year-by-year data covering the time\ninterval 1950-2000, we show that the dynamics of all GDP values and the\nevolution of the WTW (trade flow and topology) are tightly coupled. The\nprobability that two countries are connected depends on their GDP values,\nsupporting recent theoretical models relating network topology to the presence\nof a `hidden\u0027 variable (or fitness). On the other hand, the topology is shown\nto determine the GDP values due to the exchange between countries. This leads\nus to a new framework where the fitness value is a dynamical variable\ndetermining, and at the same time depending on, network topology in a\ncontinuous feedback.",
    "arxiv_id": "physics/0701030",
    "authors": [
      "D. Garlaschelli",
      "T. Di Matteo",
      "T. Aste",
      "G. Caldarelli",
      "M. I. Loffredo"
    ],
    "categories": [
      "physics.soc-ph",
      "nlin.AO",
      "q-fin.GN"
    ],
    "doi": "10.1140/epjb/e2007-00131-6",
    "journal_ref": "Eur. Phys. J. B 57,159-164 (2007)",
    "title": "Interplay between topology and dynamics in the World Trade Web",
    "url": "https://arxiv.org/abs/physics/0701030"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9e391224-0f1c-4f62-b31a-db0cf4572ac5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}