Is a ImpactAssessment a Node or a Blank Node?

A ImpactAssessment is a Node. Nodes are the fundamental items which store data. They are identified using a unique @id field. Blank Nodes are stored within them. An example of a Node is a Site which might describe an area of cropland, or a Term which describes an item in the food system.

What are the internal properties of a ImpactAssessment?

The following properties are automatically set when data are uploaded to the HESTIA platform: @context, @id and @type. If they are included in an uploaded file, they will be overwritten.

ImpactAssessment

Impact Assessment

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Type:Node

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The emissions, resource uses, and environmental impacts created during the production of one unit of a Product from a Cycle. The functional unit is defined by the units of the Product. If there are more than one Product in the Cycle, allocation is used to apportion these impacts across the Products.

Field	Type	Required	Definition
name	string	No	The name of the Impact Assessment.
version	string	No	The version of the Impact Assessment.
versionDetails	string	No	A text description of the version of the Impact Assessment.
cycle	Cycle	No	A reference to the node describing the production Cycle.
product	Product	Yes	The Product produced during the production Cycle, which is the target of this Impact Assessment.
functionalUnitQuantity	number	Yes	The quantity of the `product` that this Impact Assessment is expressed per. The units are determined by the Term of the `product` (e.g., 1kg for Wheat, grain, or 1 head for a Pig). Possible values are: `1`
allocationMethod	string	Yes	The method used to allocate environmental impacts between Products. Possible values are: `economic`, `mass`, `energy`, `biophysical`, `none`, `none required`, `system expansion`
endDate	string	Yes	The end date or year of production in ISO 8601 format (YYYY-MM-DD, YYYY-MM, or YYYY).
startDate	string	No	The start date of production in ISO 8601 format (YYYY-MM-DD, YYYY-MM, or YYYY).
site	Site	No	A reference to the node describing the Site where production occurred.
country	Term	Yes	The country from the Glossary, following GADM naming conventions. This field has additional validation rules when set: the `country.termType` must have one of the following values: `region`.
region	Term	No	The lowest level GADM region available following the naming convention used in the Glossary. This field has additional validation rules when set: the `region.termType` must have one of the following values: `region`.
organisation	Organisation	No	A reference to the node describing the Organisation that produced the Product.
source	Source	No	The Source for the data in the Impact Assessment. Not required (but recommended) for public uploads (i.e., where `dataPrivate` is `false`).
emissionsResourceUse	List[Indicator]	No	A list of emissions and resource uses. emissionsResourceUse cannot be duplicated. The following fields determine whether a Indicator is unique: `term.@id`, `key.@id`, `inputs.@id`, `animals.@id`, `country.@id`, `operation.@id`, `methodModel.@id`, `transformation.@id`, `landCover.@id`, `previousLandCover.@id` This field has additional validation rules when set: the `emissionsResourceUse.term.termType` must have one of the following values: `emission`, `resourceUse`.
impacts	List[Indicator]	No	The mid-point environmental impact Indicators. These are calculated from `emissions` and `resourceUse` by applying characterisation factors to generate a characterised impact indicator. impacts cannot be duplicated. The following fields determine whether a Indicator is unique: `term.@id`, `key.@id`, `inputs.@id`, `methodModel.@id` This field has additional validation rules when set: the `impacts.term.termType` must have one of the following values: `characterisedIndicator`. `methodModel` must also be set.
endpoints	List[Indicator]	No	The end-point environmental impact Indicators. These are calculated from the mid-point `impacts` by applying characterisation factors to generate an end-point impact indicator. endpoints cannot be duplicated. The following fields determine whether a Indicator is unique: `term.@id`, `inputs.@id`, `methodModel.@id` This field has additional validation rules when set: the `endpoints.term.termType` must have one of the following values: `endpointIndicator`. `methodModel` must also be set.
dataPrivate	boolean	Yes	If these data are private. Private means that HESTIA administrators can access these data and you can grant access to other platform users, but these data will not be made available to any other users of the platform or distributed to third parties.

Internal Properties

The following properties are automatically set when data are uploaded to the HESTIA platform. If they are included in a file which is uploaded, they will be overwritten.

Field	Type	Definition
@context		The location of the JSON-LD context file.
@id		The unique ID assigned to the Node by HESTIA.
@type		ImpactAssessment
organic	boolean	If the Cycle has an organic label. Used by the aggregation engine only.
irrigated	boolean	If the Cycle was irrigated. Used by the aggregation engine only.
autoGenerated	boolean	If this node was autogenerated during upload.
originalId	string	The identifier for these data in the source database (e.g., if the data were converted from openLCA or ecoinvent, the id field from that database).
schemaVersion	string	The version of the schema when these data were created.
added	array[string]	A list of fields that have been added to the original dataset.
addedVersion	array[string]	A list of versions of the model used to add these fields.
updated	array[string]	A list of fields that have been updated on the original dataset.
updatedVersion	array[string]	A list of versions of the model used to update these fields.
aggregated	boolean	If this Impact Assessment has been 'aggregated' using data from multiple Impact Assessments.
aggregatedDataValidated	boolean	If this aggregated Impact Assessment has been validated by the HESTIA team.
aggregatedVersion	string	A version of the aggregation engine corresponding to this Impact Assessment.
aggregatedQualityScore	integer	A data quality score for aggregated data, set equal to the quality score of the linked Cycle.
aggregatedQualityScoreMax	integer	The maximum value for the aggregated quality score, set equal to the max quality score of the linked Cycle.
aggregatedImpactAssessments	List[ImpactAssessment]	Impact Assessments used to aggregated this Impact Assessment.
aggregatedSources	List[Source]	Sources used to aggregated this Impact Assessment.
createdAt	date	Date created on HESTIA in ISO 8601 format (YYYY-MM-DD).
updatedAt	date	Last update date on HESTIA in ISO 8601 format (YYYY-MM-DD).

Example 1

JSON-LD
CSV
CSV (Compacted)

[object Object]

{
  "@context": "https://DOMAIN/schema/ImpactAssessment.jsonld",
  "@id": "impact",
  "@type": "ImpactAssessment",
  "name": "Impact Assessment for 'Wheat, grain' under treatment '50N' in 1989 in France",
  "endDate": "1989-12-31",
  "country": {
    "@id": "GADM-FRA",
    "@type": "Term",
    "name": "France",
    "termType": "region"
  },
  "region": {
    "@id": "GADM-FRA.6.9.3_1",
    "@type": "Term",
    "name": "Forbach (Districts), Moselle (Department), Grand Est (Region), France",
    "termType": "region"
  },
  "product": {
    "@type": "Product",
    "term": {
      "@id": "wheatGrain",
      "@type": "Term",
      "name": "Wheat, grain",
      "termType": "crop"
    },
    "value": [
      100
    ]
  },
  "functionalUnitQuantity": 1,
  "allocationMethod": "economic",
  "source": {
    "@id": "source",
    "@type": "Source",
    "name": "Gigou (1990)"
  },
  "emissionsResourceUse": [
    {
      "@type": "Indicator",
      "term": {
        "@id": "no3ToGroundwaterSoilFlux",
        "@type": "Term",
        "name": "NO3, to groundwater, soil flux",
        "units": "kg NO3",
        "termType": "emission"
      },
      "value": 0.01709,
      "methodModel": {
        "@id": "percolationLysimeter",
        "@type": "Term",
        "name": "Percolation lysimeter",
        "termType": "methodEmissionResourceUse"
      },
      "methodTier": "tier 2"
    }
  ],
  "impacts": [
    {
      "@type": "Indicator",
      "term": {
        "@id": "gwp100",
        "@type": "Term",
        "name": "GWP100",
        "units": "kg CO2eq",
        "termType": "characterisedIndicator"
      },
      "methodModel": {
        "@id": "ipcc2007",
        "@type": "Term",
        "name": "IPCC (2007)",
        "units": "kg CO2eq",
        "termType": "model"
      },
      "value": 0.1947728
    }
  ],
  "dataPrivate": false
}