Time¶

QuantityValue restricted to time units, that is a duration. It shows the per-quantity subclass pattern: constrain the units, default to the SI one, and give each unit individual its community aliases.

Not the same as the time module

This is the quantity kind Time: a duration with a unit. The time module is about process time, that is temporal regions, process start and end, and temporalized qualities. Upstream ontologies use the same word for both, so mapping one onto the other is a mistake that is easy to make and hard to notice.

module: quantities 0.3.0
module version: 0.1 · 0.2 · dev
extends: QuantityValue (allOf)
schema file: /quantities/dev/Time.schema.json
earlier versions: 0.1.0, 0.2.0

TermsJSONYAMLInstanceRDFGraph

Term	Constraints	Consensus mapping	Alternative mappings
all of QuantityValue
`type`	`array`, default `["QuantityValue"]`	`@type`	-
`"QuantityValue"`	type alias	qudt:Quantity value	schemaorg: schema:QuantitativeValue closeMatch broader: also covers intervals/ranges pmdco: obo:scalar value specification emmo: emmo:QuantityValue closeMatch EMMO QuantityValue requires a nested numerical part (EMMO#376)
`value` *	`number`	qudt:value	schemaorg: schema:value pmdco: obo:has specified numeric value
`unit`	`string`, format `iri-reference`	qudt:has unit	schemaorg: schema:unitCode URL branch of schema:unitCode, carrying the QUDT unit IRI pmdco: obo:has measurement unit label closeMatch range is iao:measurement unit label; unit-label vs QUDT-IRI mapping needed emmo: emmo:hasReferencePart hasReferencePart; pinned 1.0.4 branch snapshot (units are individuals there)
`standard_uncertainty` Standard uncertainty, expressed in the unit of value (GUM convention)	`number`	qudt:standard uncertainty	emmo: emmo:standardUncertainty standardUncertainty (VIM4 3.6); 1.0.4 branch only
`relative_standard_uncertainty` Dimensionless ratio, not percent; ratio-scale quantities only, undefined at value 0; redundant with standard_uncertainty (u = r * \|v\|), give only one	`number`	qudt:relative standard uncertainty	-
Time
`type`	default `["Time"]`	`@type`	-
`"Time"`	type alias	qkind:Time	emmo: emmo:Time Time (ISO 80000 item 3-7); Duration (EMMO_0adabf6f) is its subclass
`unit`	enum, default `"second"`	qudt:has unit	-
`"second"`	value alias	qunit:Second	emmo: emmo:Second pmdco: obo:second UO second; UO units are classes, punning like EMMO#377
`"milli_second"`	value alias	qunit:Millisecond	emmo: emmo:MilliSecond pmdco: obo:millisecond UO millisecond
`"hour"`	value alias	qunit:Hour	emmo: emmo:Hour pmdco: obo:hour UO hour

* marks a required property.

{
  "$schema": "https://oo-ld.org/latest/meta/oold-meta-schema.json",
  "$id": "Time.schema.json",
  "x-oold-uuid": "d06f35fd-0b42-54db-a2e6-1c329204346d",
  "x-oold-version": "0.2.0",
  "title": "Time",
  "examples": [
    {
      "type": [
        "Time"
      ],
      "value": 12.7,
      "unit": "second",
      "standard_uncertainty": 0.05
    }
  ],
  "allOf": [
    {
      "$ref": "QuantityValue.schema.json"
    }
  ],
  "@context": [
    "QuantityValue.schema.json",
    {
      "qkind": "http://qudt.org/vocab/quantitykind/",
      "Time": "qkind:Time",
      "second": "qunit:SEC",
      "milli_second": "qunit:MilliSEC",
      "hour": "qunit:HR"
    }
  ],
  "properties": {
    "type": {
      "default": [
        "Time"
      ]
    },
    "unit": {
      "enum": [
        "second",
        "milli_second",
        "hour"
      ],
      "default": "second"
    }
  },
  "x-oold-context": {
    "Time": {
      "emmo:EMMO_d4f7d378_5e3b_468a_baa1_a7e98358cda7": {
        "x-oold-sssom": {
          "predicate_id": "skos:exactMatch",
          "mapping_set_id": "https://w3id.org/oo-ld/schemas/mappings/emmo.sssom.tsv",
          "object_source_version": "https://w3id.org/emmo/1.0.4",
          "comment": "Time (ISO 80000 item 3-7); Duration (EMMO_0adabf6f) is its subclass"
        }
      }
    },
    "second": {
      "emmo:Second": {
        "x-oold-sssom": {
          "predicate_id": "skos:exactMatch",
          "mapping_set_id": "https://w3id.org/oo-ld/schemas/mappings/emmo.sssom.tsv"
        }
      },
      "obo:UO_0000010": {
        "x-oold-sssom": {
          "predicate_id": "skos:exactMatch",
          "mapping_set_id": "https://w3id.org/oo-ld/schemas/mappings/pmdco.sssom.tsv",
          "comment": "UO second; UO units are classes, punning like EMMO#377"
        }
      }
    },
    "milli_second": {
      "emmo:MilliSecond": {
        "x-oold-sssom": {
          "predicate_id": "skos:exactMatch",
          "mapping_set_id": "https://w3id.org/oo-ld/schemas/mappings/emmo.sssom.tsv"
        }
      },
      "obo:UO_0000028": {
        "x-oold-sssom": {
          "predicate_id": "skos:exactMatch",
          "mapping_set_id": "https://w3id.org/oo-ld/schemas/mappings/pmdco.sssom.tsv",
          "comment": "UO millisecond"
        }
      }
    },
    "hour": {
      "emmo:Hour": {
        "x-oold-sssom": {
          "predicate_id": "skos:exactMatch",
          "mapping_set_id": "https://w3id.org/oo-ld/schemas/mappings/emmo.sssom.tsv"
        }
      },
      "obo:UO_0000032": {
        "x-oold-sssom": {
          "predicate_id": "skos:exactMatch",
          "mapping_set_id": "https://w3id.org/oo-ld/schemas/mappings/pmdco.sssom.tsv",
          "comment": "UO hour"
        }
      }
    }
  }
}

$schema: https://oo-ld.org/latest/meta/oold-meta-schema.json
$id: Time.schema.json
x-oold-uuid: d06f35fd-0b42-54db-a2e6-1c329204346d
x-oold-version: 0.2.0
title: Time
examples:
- type:
  - Time
  value: 12.7
  unit: second
  standard_uncertainty: 0.05
allOf:
- $ref: QuantityValue.schema.json
'@context':
- QuantityValue.schema.json
- qkind: http://qudt.org/vocab/quantitykind/
  Time: qkind:Time
  second: qunit:SEC
  milli_second: qunit:MilliSEC
  hour: qunit:HR
properties:
  type:
    default:
    - Time
  unit:
    enum:
    - second
    - milli_second
    - hour
    default: second
x-oold-context:
  Time:
    emmo:EMMO_d4f7d378_5e3b_468a_baa1_a7e98358cda7:
      x-oold-sssom:
        predicate_id: skos:exactMatch
        mapping_set_id: https://w3id.org/oo-ld/schemas/mappings/emmo.sssom.tsv
        object_source_version: https://w3id.org/emmo/1.0.4
        comment: Time (ISO 80000 item 3-7); Duration (EMMO_0adabf6f) is its subclass
  second:
    emmo:Second:
      x-oold-sssom:
        predicate_id: skos:exactMatch
        mapping_set_id: https://w3id.org/oo-ld/schemas/mappings/emmo.sssom.tsv
    obo:UO_0000010:
      x-oold-sssom:
        predicate_id: skos:exactMatch
        mapping_set_id: https://w3id.org/oo-ld/schemas/mappings/pmdco.sssom.tsv
        comment: UO second; UO units are classes, punning like EMMO#377
  milli_second:
    emmo:MilliSecond:
      x-oold-sssom:
        predicate_id: skos:exactMatch
        mapping_set_id: https://w3id.org/oo-ld/schemas/mappings/emmo.sssom.tsv
    obo:UO_0000028:
      x-oold-sssom:
        predicate_id: skos:exactMatch
        mapping_set_id: https://w3id.org/oo-ld/schemas/mappings/pmdco.sssom.tsv
        comment: UO millisecond
  hour:
    emmo:Hour:
      x-oold-sssom:
        predicate_id: skos:exactMatch
        mapping_set_id: https://w3id.org/oo-ld/schemas/mappings/emmo.sssom.tsv
    obo:UO_0000032:
      x-oold-sssom:
        predicate_id: skos:exactMatch
        mapping_set_id: https://w3id.org/oo-ld/schemas/mappings/pmdco.sssom.tsv
        comment: UO hour

{
  "$schema": "https://w3id.org/oo-ld/schemas/quantities/dev/Time.schema.json",
  "@context": "https://w3id.org/oo-ld/schemas/quantities/dev/Time.schema.json",
  "id": "https://example.org/m1-duration",
  "type": [
    "Time"
  ],
  "value": 12.7,
  "unit": "second",
  "standard_uncertainty": 0.05
}

Mapping set

PREFIX ex: <https://example.org/>
PREFIX qkind: <http://qudt.org/vocab/quantitykind/>
PREFIX qudt: <http://qudt.org/schema/qudt/>
PREFIX qunit: <http://qudt.org/vocab/unit/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

ex:m1-duration
    a qkind:Time ;
    qudt:hasUnit qunit:SEC ;
    qudt:standardUncertainty 5e-02 ;
    qudt:value 1.27e+01 ;
.

PREFIX emmo: <https://w3id.org/emmo#>
PREFIX ex: <https://example.org/>
PREFIX qudt: <http://qudt.org/schema/qudt/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

ex:m1-duration
    a emmo:EMMO_d4f7d378_5e3b_468a_baa1_a7e98358cda7 ;
    qudt:value 1.27e+01 ;
    emmo:EMMO_bba7f0f0_3707_42b9_b3fa_fd04610ef147 5e-02 ;
    emmo:EMMO_eeb06032_dd4f_476e_9da6_aa24302b7588 emmo:Second ;
.

PREFIX ex: <https://example.org/>
PREFIX obo: <http://purl.obolibrary.org/obo/>
PREFIX qkind: <http://qudt.org/vocab/quantitykind/>
PREFIX qudt: <http://qudt.org/schema/qudt/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

ex:m1-duration
    a qkind:Time ;
    obo:IAO_0000039 obo:UO_0000010 ;
    obo:OBI_0001937 1.27e+01 ;
    qudt:standardUncertainty 5e-02 ;
.

PREFIX ex: <https://example.org/>
PREFIX qkind: <http://qudt.org/vocab/quantitykind/>
PREFIX qudt: <http://qudt.org/schema/qudt/>
PREFIX qunit: <http://qudt.org/vocab/unit/>
PREFIX schema1: <http://schema.org/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

ex:m1-duration
    a qkind:Time ;
    qudt:standardUncertainty 5e-02 ;
    schema1:unitCode qunit:SEC ;
    schema1:value 1.27e+01 ;
.

Mapping set

flowchart LR
  n0["m1-duration<br>qkind:Time"]
  n1["qunit:Second"]
  n2[/"0.05"/]
  n3[/"12.7"/]
  n0 -->|qudt:has unit| n1
  n0 -->|qudt:standard uncertainty| n2
  n0 -->|qudt:value| n3

flowchart LR
  n0["m1-duration<br>emmo:Time"]
  n1[/"12.7"/]
  n2[/"0.05"/]
  n3["emmo:Second"]
  n0 -->|qudt:value| n1
  n0 -->|emmo:standardUncertainty| n2
  n0 -->|emmo:hasReferencePart| n3

flowchart LR
  n0["m1-duration<br>qkind:Time"]
  n1["obo:second"]
  n2[/"12.7"/]
  n3[/"0.05"/]
  n0 -->|obo:has measurement unit label| n1
  n0 -->|obo:has specified numeric value| n2
  n0 -->|qudt:standard uncertainty| n3

flowchart LR
  n0["m1-duration<br>qkind:Time"]
  n1[/"0.05"/]
  n2["qunit:Second"]
  n3[/"12.7"/]
  n0 -->|qudt:standard uncertainty| n1
  n0 -->|schema:unitCode| n2
  n0 -->|schema:value| n3

Where the unit aliases come from¶

The EMMO 1.0.4 branch publishes around 1600 unit individuals, each carrying a qudtReference annotation. The alias table is therefore generated rather than hand-typed, and the same source gives the UCUM and UN/CEFACT codes when they are needed.