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{
 "rule": "mean F1 over human200 and ami_dev on a 0.01 grid; moved only when the bootstrap 95% interval of the gain over the previous threshold is above zero; fixed before re-scoring any test set",
 "heads": {
  "commitment": {
   "threshold": 0.54307,
   "previous": 0.54307,
   "dev_set": "human200 (Coleman, blind, product definitions) + ami_dev (AMI human annotations)",
   "gain_mean_f1": 0.017,
   "gain_ci95": [
    -0.0108,
    0.0507
   ],
   "f1_human200": 0.8254,
   "f1_ami_dev": 0.5816,
   "n_human200": 200,
   "pos_human200": 33,
   "n_ami_dev": 5921,
   "pos_ami_dev": 274,
   "moved": false
  },
  "open_question": {
   "threshold": 0.69,
   "previous": 0.53315,
   "dev_set": "human200 (Coleman, blind, product definitions) + ami_dev (AMI human annotations)",
   "gain_mean_f1": 0.0186,
   "gain_ci95": [
    0.0067,
    0.0274
   ],
   "f1_human200": 0.9189,
   "f1_ami_dev": 0.5628,
   "n_human200": 200,
   "pos_human200": 58,
   "n_ami_dev": 18987,
   "pos_ami_dev": 777,
   "moved": true
  },
  "delegate": {
   "threshold": 0.51,
   "previous": 0.31651,
   "dev_set": "human200 (Coleman, blind, product definitions) + ami_dev (AMI human annotations)",
   "gain_mean_f1": 0.0624,
   "gain_ci95": [
    0.0096,
    0.1131
   ],
   "f1_human200": 0.9,
   "f1_ami_dev": 0.3333,
   "n_human200": 200,
   "pos_human200": 31,
   "n_ami_dev": 18952,
   "pos_ami_dev": 22,
   "moved": true
  }
 },
 "fitted": "2026-10-07",
 "previous_rule": "max-F1 on dev; thresholds are fixed before any test run"
}