Understanding IDS Design

The IDS captures as much available information from the RAW files as possible, such as:

  • time - Time that the data set is related to
  • system(s) - Equipment used to produce the result, software, and firmware
  • user(s) - Person who performed the experiment
  • sample(s) - Sample used in the experiment
  • method(s) - Experimental recipe and input parameters
  • run(s) - A particular execution of the experiment
  • experiment(s) - Information about the experiment, id, name, and so on
  • result(s) - Measurement results
  • related_file(s) - Pointer(s) to related files (for example, raw experimental data sets in the vendor specific, and often proprietary, format)
  • datacubes - Multi-dimensional data such as chromatogram, images, plate readings, and so on

IDS JSON Example

An example of an IDS JSON is below:

  • Three pieces of information are used to uniquely identify the IDS:
    "@idsType": "cell-counter",
    "@idsVersion": "v1.0.0",
    "@idsNamespace": "common,

  • Items such as the run, time, sample, method, user, and results are also included.

{
  "@idsType": "cell-counter",
  "@idsVersion": "v1.0.0",
  "@idsNamespace": "common",
  "system": {
    "serial_number": "serial_number"
  },
  "run": {
    "id": "413befdd-c7e2-4edd-9e9b-06cf1cb0283f"
  },
  "time": {
    "measurement": "2015-09-24T03:47:13.0Z"
  },
  "sample": {
    "id": "unknown-10",
    "batch": {
      "id": "batch-number"
    }
  },
  "method": {
    "instrument": {
      "cell_type": "CHO",
      "dilution_factor": 1
    }
  },
  "user": {
    "name": "operator-1"
  },
  "result": {
    "cell": {
      "viability": {
        "value": 0.1,
        "unit": "Percent"
      },
      "diameter": {
        "average": {
          "live": {
            "value": 21.07,
            "unit": "Micrometer"
          }
        }
      },
      "count": {
        "total": {
          "value": 1207,
          "unit": "Cell"
        },
        "viable": {
          "value": 1,
          "unit": "Cell"
        }
      },
      "density": {
        "total": {
          "value": 102.24,
          "unit": "MillionCellsPerMilliliter"
        },
        "viable": {
          "value": 0.1,
          "unit": "MillionCellsPerMilliliter"
        }
      }
    }
  }
}

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