{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "schema:DataCatalog",
  "title": "DataCatalog",
  "description": "A collection of datasets.",
  "type": "object",
  "allOf": [
    {
      "description": "The most generic kind of creative work, including books, movies, photographs, software programs, etc.",
      "$ref": "schema:CreativeWork"
    }
  ],
  "properties": {
    "dataset": {
      "description": "A dataset contained in this catalog.",
      "oneOf": [
        { "$ref": "schema:Dataset" },
        { "type": "array", "items": { "$ref": "schema:Dataset" } }
      ]
    },
    "measurementMethod": {
      "description": "A subproperty of [[measurementTechnique]] that can be used for specifying specific methods, in particular via [[MeasurementMethodEnum]].",
      "oneOf": [
        {
          "anyOf": [
            { "type": "string", "format": "uri" },
            { "type": "string" },
            { "$ref": "schema:DefinedTerm" },
            { "$ref": "schema:MeasurementMethodEnum" }
          ]
        },
        {
          "type": "array",
          "items": {
            "anyOf": [
              { "type": "string", "format": "uri" },
              { "type": "string" },
              { "$ref": "schema:DefinedTerm" },
              { "$ref": "schema:MeasurementMethodEnum" }
            ]
          }
        }
      ]
    },
    "measurementTechnique": {
      "description": "A technique, method or technology used in an [[Observation]], [[StatisticalVariable]] or [[Dataset]] (or [[DataDownload]], [[DataCatalog]]), corresponding to the method used for measuring the corresponding variable(s) (for datasets, described using [[variableMeasured]]; for [[Observation]], a [[StatisticalVariable]]). Often but not necessarily each [[variableMeasured]] will have an explicit representation as (or mapping to) an property such as those defined in Schema.org, or other RDF vocabularies and \"knowledge graphs\". In that case the subproperty of [[variableMeasured]] called [[measuredProperty]] is applicable.\n    \nThe [[measurementTechnique]] property helps when extra clarification is needed about how a [[measuredProperty]] was measured. This is oriented towards scientific and scholarly dataset publication but may have broader applicability; it is not intended as a full representation of measurement, but can often serve as a high level summary for dataset discovery. \n\nFor example, if [[variableMeasured]] is: molecule concentration, [[measurementTechnique]] could be: \"mass spectrometry\" or \"nmr spectroscopy\" or \"colorimetry\" or \"immunofluorescence\". If the [[variableMeasured]] is \"depression rating\", the [[measurementTechnique]] could be \"Zung Scale\" or \"HAM-D\" or \"Beck Depression Inventory\". \n\nIf there are several [[variableMeasured]] properties recorded for some given data object, use a [[PropertyValue]] for each [[variableMeasured]] and attach the corresponding [[measurementTechnique]]. The value can also be from an enumeration, organized as a [[MeasurementMetholdEnumeration]].",
      "oneOf": [
        {
          "anyOf": [
            { "type": "string", "format": "uri" },
            { "type": "string" },
            { "$ref": "schema:DefinedTerm" },
            { "$ref": "schema:MeasurementMethodEnum" }
          ]
        },
        {
          "type": "array",
          "items": {
            "anyOf": [
              { "type": "string", "format": "uri" },
              { "type": "string" },
              { "$ref": "schema:DefinedTerm" },
              { "$ref": "schema:MeasurementMethodEnum" }
            ]
          }
        }
      ]
    }
  }
}