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Class: VariableMetadata

Metadata describing an individual variable, field, or column in a dataset. Variables may represent measurements, observations, derived values, or categorical attributes.

URI: schema:PropertyValue

classDiagram class VariableMetadata click VariableMetadata href "../VariableMetadata/" DatasetProperty <|-- VariableMetadata click DatasetProperty href "../DatasetProperty/" VariableMetadata : categories VariableMetadata : data_type VariableMetadata --> "0..1" VariableTypeEnum : data_type click VariableTypeEnum href "../VariableTypeEnum/" VariableMetadata : derivation VariableMetadata : description VariableMetadata : examples VariableMetadata : id VariableMetadata : is_identifier VariableMetadata : is_sensitive VariableMetadata : maximum_value VariableMetadata : measurement_technique VariableMetadata : minimum_value VariableMetadata : missing_value_code VariableMetadata : name VariableMetadata : precision VariableMetadata : quality_notes VariableMetadata : unit VariableMetadata : used_software VariableMetadata --> "*" Software : used_software click Software href "../Software/" VariableMetadata : variable_name

Inheritance

Slots

Name Cardinality and Range Description Inheritance
variable_name 1
String		 The name or identifier of the variable as it appears in the data files direct
data_type 0..1
VariableTypeEnum		 The data type of the variable (e direct
unit 0..1
Uriorcurie		 The unit of measurement for the variable, preferably using QUDT units (http:/... direct
missing_value_code *
String		 Code(s) used to represent missing values for this variable direct
minimum_value 0..1
Float		 The minimum value that the variable can take direct
maximum_value 0..1
Float		 The maximum value that the variable can take direct
categories *
String		 The permitted categories or values for a categorical variable direct
examples *
String		 Example values for this variable to illustrate typical data direct
is_identifier 0..1
Boolean		 Indicates whether this variable serves as a unique identifier or key for reco... direct
is_sensitive 0..1
Boolean		 Indicates whether this variable contains sensitive information (e direct
precision 0..1
Integer		 The precision or number of decimal places for numeric variables direct
measurement_technique 0..1
String		 The technique or method used to measure this variable direct
derivation 0..1
String		 Description of how this variable was derived or calculated from other variabl... direct
quality_notes *
String		 Notes about data quality, reliability, or known issues specific to this varia... direct
id 0..1
Uriorcurie		 An optional identifier for this property DatasetProperty
name 0..1
String		 A human-readable name for this property DatasetProperty
description 0..1
String		 A human-readable description for this property DatasetProperty
used_software *
Software		 What software was used as part of this dataset property? DatasetProperty

Usages

used by used in type used
Dataset variables range VariableMetadata
DataSubset variables range VariableMetadata

Identifier and Mapping Information

Schema Source

  • from schema: https://w3id.org/bridge2ai/data-sheets-schema

Mappings

Mapping Type Mapped Value
self schema:PropertyValue
native data_sheets_schema:VariableMetadata
exact schema:PropertyValue

LinkML Source

Direct

name: VariableMetadata
description: Metadata describing an individual variable, field, or column in a dataset.
  Variables may represent measurements, observations, derived values, or categorical
  attributes.
from_schema: https://w3id.org/bridge2ai/data-sheets-schema
exact_mappings:
- schema:PropertyValue
is_a: DatasetProperty
attributes:
  variable_name:
    name: variable_name
    description: The name or identifier of the variable as it appears in the data
      files.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    exact_mappings:
    - schema:name
    rank: 1000
    slot_uri: schema:name
    domain_of:
    - VariableMetadata
    range: string
    required: true
  data_type:
    name: data_type
    description: The data type of the variable (e.g., integer, float, string, boolean,
      date, categorical). Use standard type names when possible.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    exact_mappings:
    - schema:DataType
    rank: 1000
    slot_uri: schema:DataType
    domain_of:
    - VariableMetadata
    range: VariableTypeEnum
  unit:
    name: unit
    description: 'The unit of measurement for the variable, preferably using QUDT
      units (http://qudt.org/vocab/unit/). Examples: qudt:Kilogram, qudt:Meter, qudt:DegreeCelsius.'
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    exact_mappings:
    - qudt:hasUnit
    - schema:unitCode
    rank: 1000
    slot_uri: qudt:unit
    domain_of:
    - VariableMetadata
    range: uriorcurie
  missing_value_code:
    name: missing_value_code
    description: 'Code(s) used to represent missing values for this variable. Examples:
      "NA", "-999", "null", "". Multiple codes may be specified.'
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    domain_of:
    - VariableMetadata
    range: string
    multivalued: true
  minimum_value:
    name: minimum_value
    description: The minimum value that the variable can take. Applicable to numeric
      variables.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    slot_uri: schema:minValue
    domain_of:
    - VariableMetadata
    range: float
  maximum_value:
    name: maximum_value
    description: The maximum value that the variable can take. Applicable to numeric
      variables.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    slot_uri: schema:maxValue
    domain_of:
    - VariableMetadata
    range: float
  categories:
    name: categories
    description: The permitted categories or values for a categorical variable. Each
      entry should describe a possible value and its meaning.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    slot_uri: schema:valueReference
    domain_of:
    - VariableMetadata
    range: string
    multivalued: true
  examples:
    name: examples
    description: Example values for this variable to illustrate typical data.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    slot_uri: skos:example
    domain_of:
    - ExistingUse
    - IntendedUse
    - VariableMetadata
    range: string
    multivalued: true
  is_identifier:
    name: is_identifier
    description: Indicates whether this variable serves as a unique identifier or
      key for records in the dataset.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    slot_uri: schema:identifier
    domain_of:
    - VariableMetadata
    range: boolean
  is_sensitive:
    name: is_sensitive
    description: Indicates whether this variable contains sensitive information (e.g.,
      personal data, protected health information).
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    domain_of:
    - VariableMetadata
    range: boolean
  precision:
    name: precision
    description: The precision or number of decimal places for numeric variables.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    domain_of:
    - VariableMetadata
    range: integer
  measurement_technique:
    name: measurement_technique
    description: 'The technique or method used to measure this variable. Examples:
      "mass spectrometry", "self-report survey", "GPS coordinates".'
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    slot_uri: schema:measurementTechnique
    domain_of:
    - VariableMetadata
    range: string
  derivation:
    name: derivation
    description: Description of how this variable was derived or calculated from other
      variables, if applicable.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    domain_of:
    - VariableMetadata
    range: string
  quality_notes:
    name: quality_notes
    description: Notes about data quality, reliability, or known issues specific to
      this variable.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    domain_of:
    - VariableMetadata
    range: string
    multivalued: true
class_uri: schema:PropertyValue

Induced

name: VariableMetadata
description: Metadata describing an individual variable, field, or column in a dataset.
  Variables may represent measurements, observations, derived values, or categorical
  attributes.
from_schema: https://w3id.org/bridge2ai/data-sheets-schema
exact_mappings:
- schema:PropertyValue
is_a: DatasetProperty
attributes:
  variable_name:
    name: variable_name
    description: The name or identifier of the variable as it appears in the data
      files.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    exact_mappings:
    - schema:name
    rank: 1000
    slot_uri: schema:name
    alias: variable_name
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: string
    required: true
  data_type:
    name: data_type
    description: The data type of the variable (e.g., integer, float, string, boolean,
      date, categorical). Use standard type names when possible.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    exact_mappings:
    - schema:DataType
    rank: 1000
    slot_uri: schema:DataType
    alias: data_type
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: VariableTypeEnum
  unit:
    name: unit
    description: 'The unit of measurement for the variable, preferably using QUDT
      units (http://qudt.org/vocab/unit/). Examples: qudt:Kilogram, qudt:Meter, qudt:DegreeCelsius.'
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    exact_mappings:
    - qudt:hasUnit
    - schema:unitCode
    rank: 1000
    slot_uri: qudt:unit
    alias: unit
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: uriorcurie
  missing_value_code:
    name: missing_value_code
    description: 'Code(s) used to represent missing values for this variable. Examples:
      "NA", "-999", "null", "". Multiple codes may be specified.'
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    alias: missing_value_code
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: string
    multivalued: true
  minimum_value:
    name: minimum_value
    description: The minimum value that the variable can take. Applicable to numeric
      variables.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    slot_uri: schema:minValue
    alias: minimum_value
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: float
  maximum_value:
    name: maximum_value
    description: The maximum value that the variable can take. Applicable to numeric
      variables.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    slot_uri: schema:maxValue
    alias: maximum_value
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: float
  categories:
    name: categories
    description: The permitted categories or values for a categorical variable. Each
      entry should describe a possible value and its meaning.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    slot_uri: schema:valueReference
    alias: categories
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: string
    multivalued: true
  examples:
    name: examples
    description: Example values for this variable to illustrate typical data.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    slot_uri: skos:example
    alias: examples
    owner: VariableMetadata
    domain_of:
    - ExistingUse
    - IntendedUse
    - VariableMetadata
    range: string
    multivalued: true
  is_identifier:
    name: is_identifier
    description: Indicates whether this variable serves as a unique identifier or
      key for records in the dataset.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    slot_uri: schema:identifier
    alias: is_identifier
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: boolean
  is_sensitive:
    name: is_sensitive
    description: Indicates whether this variable contains sensitive information (e.g.,
      personal data, protected health information).
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    alias: is_sensitive
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: boolean
  precision:
    name: precision
    description: The precision or number of decimal places for numeric variables.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    alias: precision
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: integer
  measurement_technique:
    name: measurement_technique
    description: 'The technique or method used to measure this variable. Examples:
      "mass spectrometry", "self-report survey", "GPS coordinates".'
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    slot_uri: schema:measurementTechnique
    alias: measurement_technique
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: string
  derivation:
    name: derivation
    description: Description of how this variable was derived or calculated from other
      variables, if applicable.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    alias: derivation
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: string
  quality_notes:
    name: quality_notes
    description: Notes about data quality, reliability, or known issues specific to
      this variable.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/variables
    rank: 1000
    alias: quality_notes
    owner: VariableMetadata
    domain_of:
    - VariableMetadata
    range: string
    multivalued: true
  id:
    name: id
    description: An optional identifier for this property.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/base
    slot_uri: schema:identifier
    alias: id
    owner: VariableMetadata
    domain_of:
    - NamedThing
    - DatasetProperty
    range: uriorcurie
  name:
    name: name
    description: A human-readable name for this property.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/base
    slot_uri: schema:name
    alias: name
    owner: VariableMetadata
    domain_of:
    - NamedThing
    - DatasetProperty
    range: string
  description:
    name: description
    description: A human-readable description for this property.
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/base
    slot_uri: schema:description
    alias: description
    owner: VariableMetadata
    domain_of:
    - NamedThing
    - DatasetProperty
    - DatasetRelationship
    range: string
  used_software:
    name: used_software
    description: What software was used as part of this dataset property?
    from_schema: https://w3id.org/bridge2ai/data-sheets-schema/base
    rank: 1000
    alias: used_software
    owner: VariableMetadata
    domain_of:
    - DatasetProperty
    range: Software
    multivalued: true
    inlined: true
    inlined_as_list: true
class_uri: schema:PropertyValue