{
  "annotation_id": "bb39c267-334d-4943-a4f9-54721683b674",
  "date_created": "2026-03-02T18:02:38.021000Z",
  "date_modified": "2026-03-02T18:02:38.021000Z",
  "file_hash": "4d6ae9dc3d0b902c0242c36cee2b8a9c5b9c9bbd9d7139d319bd0b64ca2376e5",
  "private": false,
  "record": {
    "abstract": "For a given ensemble of $N$ independent and identically prepared particles,\nwe calculate the binary decision costs of different strategies for measurement\nof polarised spin 1/2 particles. The result proves that, for any given values\nof the prior probabilities and any number of constituent particles, the cost\nfor a combined measurement is always less than or equal to that for any\ncombination of separate measurements upon sub-ensembles. The Bayes cost, which\nis that associated with the optimal strategy (i.e., a combined measurement) is\nobtained in a simple closed form.",
    "arxiv_id": "quant-ph/9507008",
    "authors": [
      "Dorje Brody",
      "Bernhard Meister"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.76.1",
    "journal_ref": "Phys.Rev.Lett. 76 (1996) 1-5",
    "title": "Minimum Decision Cost for Quantum Ensembles",
    "url": "https://arxiv.org/abs/quant-ph/9507008"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5d770d83-c581-43c9-9d30-5d6a8973ee31",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}