{
  "hydraulic": {
    "creators": [
      "Nikolai Helwig",
      "Eliseo Pignanelli",
      "Andreas Sch\u00fctze"
    ],
    "dataset_year": 2015,
    "uci_url": "https://archive.ics.uci.edu/dataset/447/condition+monitoring+of+hydraulic+systems",
    "doi": "10.24432/C5CW21",
    "license": "CC BY 4.0",
    "measurements": "60-second cycles of a laboratory hydraulic test rig",
    "selected_units": {
      "PS1": "bar",
      "PS2": "bar",
      "PS3": "bar",
      "PS4": "bar",
      "FS1": "l/min",
      "TS1": "degrees Celsius",
      "EPS1": "W",
      "VS1": "mm/s"
    }
  },
  "gas": {
    "creator": "Alexander Vergara",
    "dataset_year": 2012,
    "uci_url": "https://archive.ics.uci.edu/dataset/224/gas+sensor+array+drift+dataset",
    "doi": "10.24432/C5RP6W",
    "license": "UCI currently displays CC BY 4.0; legacy description says research-only. This noncommercial research respects both.",
    "selected_features": "Second (normalized resistance response) feature of sensors 1 through 8; dimensionless ratios per provider description",
    "temporal_context": "10 provider batches across 36-month drift experiment; batches 1-3 source, batches 6-10 confirmation",
    "recorded_availability_timestamps": false
  },
  "scope": {
    "fresh_to_this_experiment": true,
    "private_unpublished_data": false,
    "provider_defined_sequential_task": false,
    "physical_retrieval_cost_measured": false
  }
}