| about |
Subject matter of the content. Contains DefinedTerm objects (topics, biological scales, types). |
| accessibleForFree |
Whether the resource can be accessed at no cost to the user. |
| accessUrl |
Access point for the distribution: the landing page where the data can be browsed and obtained (DCAT allows a landing page as accessURL). |
| additionalProperty |
Aggregated dataset characteristics with no dedicated schema.org property, each a self-describing PropertyValue keyed by propertyID to its MIDAS category: geographic resolution (midas03), topic (midas2), digital object type (midas10). |
| additionalType |
Additional rdf:type-style classification (used by SoftwareApplication and Literature). |
| address |
Street address. |
| agentType |
Designates the concrete Agent subclass of this node (schema:Person or schema:Organization), set from the curated collection_creator.is_person flag. |
| applicationCategory |
High-level application category. Also the runtime discriminator for Dashboard (emits as schema:SoftwareApplication). |
| applicationSubCategory |
More specific application sub-category. |
| audience |
Intended audience. Default shape is the LearningResource form (DefinedTerm, multivalued); Literature overrides to a single string via slot_usage. |
| bibliographicCitation |
Recommended citation for the resource (authorship, title, date, URL) in standard academic citation format. |
| broadMatch |
SKOS broad-match crosswalk IRI. Instance-level (per term), not a slot-level mapping. |
| catalogLicense |
License governing the metadata catalog itself (the hardcoded default), separate from the license of the source data. |
| city |
City / locality. |
| codeRepository |
URL of the source-code repository. |
| competencyRequired |
Prerequisite competencies. |
| conformsTo |
Established standards or specifications that this metadata adheres to (e.g., Schema.org, Bioschemas, Dublin Core, DCAT). |
| country |
Country. |
| courseMode |
Delivery mode(s) of a course instance (e.g. online, in-person, MOOC). Emits the mode's IRI when available, else the mode name (iri-over-name) — so values are strings that MAY be IRIs; modeled as string (not uriorcurie) because the name fallback is not an IRI. |
| creator |
Agent(s) who created or compiled the data — each a Person or an Organization, selected per node by agentType from the curated is_person flag (may include ORCID identifiers). Always emitted as an array; a single-element set holding the MIDAS Coordination Center Organization when no creators are recorded. Range is Agent, the Person/Organization supertype, so the generated JSON Schema accepts either subclass. |
| dataRequirement |
Data prerequisite(s) for the resource (LRMI vocabulary). |
| dateModified |
Date the resource was last modified or updated. ISO 8601 (YYYY-MM-DD). Populated from the collection creation end date. |
| datePublished |
Last date the resource was made available (date of publication, or of the most recent update/modified version), from the curated Last Publication Date. ISO 8601 (YYYY-MM-DD). Absence is meaningful: a blank value denotes a regularly/automatically-updated resource, and MIDAS never defaults it. |
| description |
Brief description of the data. For datasets: what is included (variables, measurements), method/origin. For software: what it does, access requirements, supported languages. |
| displayName |
Human-readable display label for the term. |
| distributions |
Distributions of the dataset, one per available data format, each an access point (dcat:Distribution) whose accessURL is the landing page. (Field is plural; IRI is singular schema:distribution.) |
| educationalLevel |
Educational level(s) the resource targets. |
| educationalObjective |
Learning objectives (LRMI vocabulary). |
| educationalUse |
Intended educational use(s). |
| email |
Contact email for the organization. |
| encodingFormat |
Media/encoding format. Shared by DataDownload (single, per distribution) and SoftwareApplication (multivalued, formats the software reads/writes). |
| endpointUrl |
Web page where users can browse information about the dataset and access download links. Canonical landing-page slot (the authoritative landing-page predicate for external consumers). |
| exactMatch |
SKOS exact-match crosswalk IRI. Instance-level (per term), not a slot-level mapping. |
| externalIdentifiers |
External identifier strings (DOIs, URLs, etc.) that reference this resource in other systems. Shares schema:identifier with identifier. |
| featureClass |
GeoNames feature class (e.g. A, P). CURIE-compresses under the geonames prefix. |
| featureCode |
GeoNames feature code (e.g. PCLI). CURIE-compresses under the geonames prefix. |
| funder |
Organization that funded the creation or maintenance of this resource. |
| generated |
Entity generated by the activity. |
| genre |
Genre of the collection. Also the runtime discriminator for ModelingStudy ("modeling studies") and DiseaseSpecificCollection ("disease-specific collection"). |
| hasCourseInstance |
An offering/instance of the course. |
| id |
Unique identifier (IRI/URL) for this resource. In JSON-LD, @id represents the globally unique identifier. (Maps to @id; the identifier slot is bound to @id by gen-jsonld-context.) |
| identifier |
Primary persistent identifier for this resource (e.g., DOI, Handle, ARK, or persistent URL). Can be a simple string or PropertyValue object. |
| identifiers |
External identifier strings for the person (e.g. ORCID). Shares schema:identifier with identifier/externalIdentifiers. Curator-recommended ("Creator Identifier — ID"); the backing registry entry carries the 6-arg recommended flag. Although this is a nested Person-level slot, recommending it is consistent with the model's identifiability stance: creator is recommended, and identifier/externalIdentifiers (resource-level) are recommended, so recommending the creator-level identifier extends the same principle rather than introducing a new one. The flag emits as flat property documentation (same as all recommended slots); it does not encode the "nested under a recommended creator" conditionality, which is accepted as an adequate representation. NOTE: there is no separate identifier-TYPE slot on Person, so the "Creator Identifier — Type" recommendation has no distinct emitted slot. |
| includedInDataCatalog |
A collection of datasets in which this resource is included. Links to the MIDAS Catalog or other data catalogs. |
| inDefinedTermSet |
IRI of the controlled vocabulary / term set the term belongs to. |
| inLanguage |
Primary language(s) of the resource content. Language objects with ISO 639-2 codes; each also carries a Lexvo ISO 639-3 sameAs cross-link when available. |
| instructor |
Instructor(s) of a course, carried on the CourseInstance (schema:instructor is defined only on CourseInstance, not on Course/LearningResource). Populated from the collection's creator field when the educational resource is a course with delivery modes; for non-course educational resources that field maps to schema:creator instead. Range is Person per schema.org; MIDAS cannot guarantee the party is a person, so an organization named as instructor still emits as a Person node. No MCC fallback (unlike creator): absent when no instructor is recorded. |
| keywords |
Topic labels as plain text (schema:keywords), for keyword-based discovery (e.g. Google Dataset Search). Topic names only — the same subject fact also appears structured under about. |
| learningResourceType |
Type/format of the learning resource. |
| license |
A schema:CreativeWork license node (id/name/url), used by provenance entities (ProvEntity) and DataDownload. Distinct slot from catalogLicense/sourceLicense but the same range (License) and predicate (schema:license). |
| location |
Postal address of the organization. |
| mediaType |
IANA media type of this distribution as a resolvable IRI (dcat:mediaType). Projected as an IRI reference — mirrors accessUrl/endpointUrl. |
| name |
Title or name of the digital object, page, or resource. |
| operatingSystems |
Operating system(s) the software runs on, as OperatingSystem nodes (id = dbpedia resource IRI). |
| pavCreatedBy |
Agent responsible for creating the resource (authorship-specific counterpart to prov:wasGeneratedBy). |
| pavDerivedFrom |
Source resources from which this version was derived, one IRI per source (versioning emphasis). Multivalued: PAV permits repeated derivation, and a record built from several sources derives from all of them. |
| places |
Place objects with GeoNames references describing geographic locations covered by the resource. Shares schema:spatialCoverage with spatialCoverage. |
| programmingLanguage |
Programming language(s). Shared by SoftwareApplication and LearningResource. |
| propertyID |
IRI of the characteristic (category) a PropertyValue represents — the immutable dispatch key (midas10 digital object type, midas2 topic, midas03 geographic resolution). |
| provider |
Organization(s) providing the resource. |
| publisher |
Organization responsible for making the resource available. For MIDAS Catalog resources, the MIDAS Coordination Center. |
| relatedData |
RelatedData (CreativeWork) objects describing publications, datasets, or other resources related to this resource. The kind of relationship is carried per-object in each RelatedData's description. |
| rights |
Usage rights and conditions for accessing or using the resource (e.g., 'Registration required', 'Academic use only'). |
| sameAs |
URL of a reference web page that unambiguously indicates the item's identity (e.g., ORCID profile, Wikidata entry). NOTE: deliberately NOT mapped to dcat:landingPage — although CreativeWork populates sameAs from the landing page, this is a generic Thing slot (a Person's sameAs is an ORCID, not a landing page), so the landing-page equivalence is builder behavior, not a slot-level fact. |
| sdDatePublished |
Date MIDAS published this structured-data record (when curation of the record was completed). A fact about the metadata, not the dataset: it is never used as the dataset's datePublished. ISO 8601 (YYYY-MM-DD). |
| sourceLicense |
License governing the original source data or related resources. Shares schema:license with catalogLicense (distinct slots, same predicate). |
| standardType |
Type/category of the standard. |
| standardVersion |
Version of the conformance standard this record was produced under. Set only on the MIDAS Catalog JSON-LD Schema standard entry, sourced from MidasCatalogJsonLdSchema.VERSION. |
| state |
State / region. |
| subjectAreas |
Subject areas the standard covers. |
| teaches |
Concepts/skills the resource teaches. |
| temporalCoverage |
Date range covered by the data. ISO 8601 interval (YYYY-MM-DD/YYYY-MM-DD, or YYYY-MM-DD/.. for ongoing). |
| timeRequired |
Approximate time to complete, as an ISO 8601 duration. |
| url |
URL to the website that contains and/or describes the digital object or person. |
| used |
Entities the activity used. |
| value |
The characteristic's value (e.g. the resolution level or topic label). |
| valueReference |
The value as a controlled-vocabulary DefinedTerm carrying its own IRI (when minted) and inDefinedTermSet membership. |
| version |
Version identifier of the resource (numeric or named, e.g., '1.0', 'v2.3'). |
| wasAssociatedWith |
Agents associated with the activity. |
| wasAttributedTo |
Agent the entity was attributed to. |
| wasDerivedFrom |
Source entity from which this resource was derived. Multivalued on CreativeWork (see its slot_usage) where a record may derive from several sources; single-valued on ProvEntity. |
| wasGeneratedBy |
Activity that generated this resource. Links to a prov:Activity describing the creation process. |
| zipcode |
Postal / ZIP code. |