47663e7c79
- Migrated `published_at` to `is_or_was_published_at` with structured `PublicationEvent` class for enhanced temporal accuracy. - Introduced `has_or_had_publisher` slot to replace the string-based `publisher` slot, allowing for detailed publisher information. - Added new slots: `deduction_percentage`, `regulatory_body`, `expiration_date`, and `jurisdiction` to support tax scheme documentation. - Archived outdated slots: `published_by` and `publisher`, ensuring compliance with updated naming conventions and ontology alignment. - Updated `Database` types to `DatabaseSystem` for consistency in technological infrastructure classification. - Broadened range types for slots `allows_or_allowed` and `includes_or_included` from `string` to `uriorcurie` to resolve OWL ambiguities. - Enhanced documentation and examples across various classes and slots to clarify usage and improve understanding.
238 lines
10 KiB
YAML
238 lines
10 KiB
YAML
id: https://nde.nl/ontology/hc/class/SocialMediaContent
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name: social_media_content_class
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title: Social Media Content Base Class
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imports:
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- linkml:types
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- ./SocialMediaProfile
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- ./SocialMediaPlatformType
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- ./TimeSpan
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- ./WebObservation
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- ../slots/language
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- ../slots/has_or_had_api_endpoint
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- ../slots/has_api_version
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- ../slots/content_category
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- ../slots/content_id
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- ../slots/content_url
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- ../slots/description
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- ../slots/is_official_content
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- ../slots/platform_type
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- ../slots/posted_by_profile
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# - ../slots/published_at # ARCHIVED 2026-01-17 - migrated per Rule 53/56
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- ../slots/is_or_was_published_at # was: published_at - migrated per Rule 53/56 (2026-01-17)
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- ./PublicationEvent # for is_or_was_published_at range
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- ./TimeSpan # for PublicationEvent.temporal_extent
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- ../slots/retrieval_timestamp
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- ../slots/specificity_annotation
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- ../slots/is_or_was_categorized_as # was: tag - migrated per Rule 53/56 (2026-01-16)
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- ./Tag
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- ../slots/has_or_had_score # was: template_specificity - migrated per Rule 53 (2026-01-17)
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- ../slots/has_or_had_url # was: thumbnail_url - migrated per Rule 53 (2026-01-15)
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- ../slots/has_or_had_label # was: title - migrated per Rule 53
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- ../slots/was_last_updated_at # was: updated_at - migrated per Rule 53
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- ./SpecificityAnnotation
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- ./TemplateSpecificityScore # was: TemplateSpecificityScores - migrated per Rule 53 (2026-01-17)
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- ./TemplateSpecificityType
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- ./TemplateSpecificityTypes
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prefixes:
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linkml: https://w3id.org/linkml/
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hc: https://nde.nl/ontology/hc/
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schema: http://schema.org/
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foaf: http://xmlns.com/foaf/0.1/
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dcterms: http://purl.org/dc/terms/
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prov: http://www.w3.org/ns/prov#
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crm: http://www.cidoc-crm.org/cidoc-crm/
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skos: http://www.w3.org/2004/02/skos/core#
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as: https://www.w3.org/ns/activitystreams#
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default_prefix: hc
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classes:
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SocialMediaContent:
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class_uri: as:Object
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abstract: true
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description: "Abstract base class for all social media content items.\n\n**DEFINITION**:\n\nSocialMediaContent represents\
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\ discrete pieces of content published on social media\nplatforms. This includes videos, images, text posts, stories,\
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\ and other content types.\nEach content item is posted by a SocialMediaProfile (the channel/account).\n\n**CRITICAL:\
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\ CONTENT vs PROFILE vs PLATFORM**:\n\n| Class | Represents | Example | Cardinality |\n|-------|------------|---------|-------------|\n\
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| SocialMediaPlatformType | Platform category | YouTube | ~25 types |\n| SocialMediaProfile | Account/channel | @rijksmuseum\
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\ | Thousands |\n| **SocialMediaContent** | Individual content | A video, post | Millions |\n\n**ACTIVITY STREAMS 2.0\
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\ ALIGNMENT**:\n\nMaps to `as:Object` from W3C Activity Streams 2.0 vocabulary:\n- as:Object is the base type for content\
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\ in social media\n- Subclasses map to as:Video, as:Image, as:Note, etc.\n- Enables federation with ActivityPub-based\
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\ platforms (Mastodon, PeerTube)\n\n**HERITAGE INSTITUTION CONTEXT**:\n\nSocial media content from heritage institutions\
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\ includes:\n\n1. **Official content** (posted by the institution):\n - Collection highlights\n - Exhibition announcements\n\
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\ - Educational videos\n - Behind-the-scenes content\n - Event recordings\n\n2. **Third-party content** (about\
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\ the institution):\n - Visitor videos/photos\n - News coverage\n - Academic discussions\n - Review content\n\
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\n3. **User-generated content** (mentions):\n - Tagged posts\n - Check-ins\n - Comments/discussions\n\n**PROVENANCE\
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\ TRACKING**:\n\nContent items are OBSERVATIONAL data retrieved via:\n- Platform APIs (YouTube Data API, Twitter API,\
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\ etc.)\n- Web scraping (when API unavailable)\n- Manual archival\n\nEach content record includes:\n- `retrieval_timestamp`:\
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\ When content was fetched\n- `api_endpoint`: Which API/method was used\n- `metrics_observed_date`: When engagement\
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\ metrics were recorded\n\n**TEMPORAL CONSIDERATIONS**:\n\nContent has multiple temporal dimensions:\n- `is_or_was_published_at`:\
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\\ When originally posted\\n- `was_last_updated_at`: Last modification by author\\n- `retrieval_timestamp`: When we fetched it\\n\\
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- `metrics_observed_date`: When metrics (views, likes) were recorded\n\nEngagement metrics change constantly; always\
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\ record observation timestamp.\n\n**SUBCLASSES**:\n\n- VideoPost: YouTube, TikTok, Vimeo videos\n- ImagePost: Instagram,\
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\ Pinterest posts (future)\n- TextPost: Twitter/X, Mastodon posts (future)\n- StoryPost: Instagram/Facebook stories\
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\ (future)\n"
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exact_mappings:
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- as:Object
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close_mappings:
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- schema:CreativeWork
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- crm:E73_Information_Object
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related_mappings:
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- schema:SocialMediaPosting
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- dcterms:BibliographicResource
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slots:
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- has_or_had_api_endpoint
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- has_api_version
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- content_category
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- content_id
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- content_url
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- description
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- is_official_content
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- language
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- platform_type
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- posted_by_profile
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- is_or_was_published_at # was: published_at - migrated per Rule 53/56 (2026-01-17)
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- retrieval_timestamp
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- specificity_annotation
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- is_or_was_categorized_as # was: tag - migrated per Rule 53/56 (2026-01-16)
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- has_or_had_score # was: template_specificity - migrated per Rule 53 (2026-01-17)
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- has_or_had_url # was: thumbnail_url - migrated per Rule 53 (2026-01-15)
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- has_or_had_label # was: title
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- was_last_updated_at # was: updated_at - migrated per Rule 53
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slot_usage:
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content_id:
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range: string
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required: true
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identifier: true
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examples:
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- value: FbIoC-Owy-M
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description: YouTube video ID
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content_url:
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range: uri
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required: true
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pattern: ^https?://
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examples:
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- value: https://www.youtube.com/watch?v=FbIoC-Owy-M
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description: YouTube video URL
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platform_type:
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range: SocialMediaPlatformType
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required: true
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examples:
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- value: YouTube
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description: Content from YouTube platform
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posted_by_profile:
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range: SocialMediaProfile
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required: false
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examples:
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- value: https://nde.nl/ontology/hc/social-media/nationaal-onderduikmuseum-youtube
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description: Museum's YouTube channel profile
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has_or_had_label: # was: title
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range: string
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required: false
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examples:
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- value: De Vrijheidsroute (aflevering 3) – Zevenaar, Duiven, Westervoort
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description: YouTube video title
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description:
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range: string
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required: false
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examples:
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- value: De videoreeks De Vrijheidsroute is gebaseerd op de gelijknamige fietsroute...
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description: YouTube video description
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is_or_was_published_at: # was: published_at - migrated per Rule 53/56 (2026-01-17)
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range: PublicationEvent
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required: true
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inlined: true
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description: |
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Publication event with temporal extent. For precise timestamps,
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set all four TimeSpan boundaries to the same instant.
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examples:
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- value:
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temporal_extent:
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begin_of_the_begin: '2025-07-30T18:05:15Z'
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end_of_the_begin: '2025-07-30T18:05:15Z'
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begin_of_the_end: '2025-07-30T18:05:15Z'
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end_of_the_end: '2025-07-30T18:05:15Z'
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description: Published July 30, 2025 (precise timestamp)
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was_last_updated_at: # was: updated_at - migrated per Rule 53
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range: datetime
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required: false
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examples:
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- value: '2025-08-01T10:30:00Z'
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description: Last edited August 1, 2025
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language:
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range: string
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required: false
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examples:
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- value: nl
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description: Dutch language content
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# was: tag - migrated per Rule 53/56 (2026-01-16)
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is_or_was_categorized_as:
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range: Tag
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multivalued: true
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inlined_as_list: true
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required: false
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description: |
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Tags, hashtags, or keywords associated with the content.
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MIGRATED from tag slot per slot_fixes.yaml (Rule 53/56, 2026-01-16).
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examples:
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- value:
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- tag_value: "80 jaar vrijheid"
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is_hashtag: false
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tag_platform: YouTube
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- tag_value: "wo2"
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is_hashtag: false
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tag_platform: YouTube
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- tag_value: "vrijheidsroute"
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is_hashtag: false
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tag_platform: YouTube
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description: YouTube video tags (migrated to structured Tag format)
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has_or_had_url: # was: thumbnail_url - migrated per Rule 53 (2026-01-15)
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range: uri
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required: false
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description: |
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Thumbnail URL for this social media content.
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MIGRATED from thumbnail_url slot per slot_fixes.yaml (Rule 53, 2026-01-15).
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examples:
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- value: https://i.ytimg.com/vi/FbIoC-Owy-M/hqdefault.jpg
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description: YouTube video thumbnail
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is_official_content:
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range: boolean
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required: false
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ifabsent: 'true'
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examples:
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- value: true
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description: Posted by official museum channel
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content_category:
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range: string
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required: false
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examples:
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- value: '22'
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description: YouTube category ID for People & Blogs
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retrieval_timestamp:
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range: datetime
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required: true
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examples:
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- value: '2025-12-01T23:16:22.294232+00:00'
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description: Retrieved December 1, 2025
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has_or_had_api_endpoint:
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range: string
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required: false
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examples:
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- value: https://www.googleapis.com/youtube/v3
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description: YouTube Data API v3
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has_api_version:
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range: string
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required: false
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examples:
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- value: v3
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description: YouTube API version 3
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comments:
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- Abstract base class - use specific subclasses (VideoPost, ImagePost, etc.)
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- Represents individual CONTENT items, not profiles or platforms
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- Activity Streams 2.0 alignment enables ActivityPub federation
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- Metrics are observational - always include retrieval_timestamp
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- Supports both official institutional content and third-party coverage
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see_also:
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- https://www.w3.org/ns/activitystreams#Object
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- https://schema.org/CreativeWork
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- https://schema.org/SocialMediaPosting
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