{
  "unit": "dataset, then parent/query, then an eligible target",
  "dataset_probabilities": {
    "refpath_train": 0.25,
    "pannuke": 0.2,
    "nucls": 0.15,
    "nuinsseg": 0.15,
    "bcss": 0.1,
    "midogpp": 0.1,
    "lizard": 0.05
  },
  "applied_to_export": false
}