id: https://nde.nl/ontology/hc/class/VideoTextContent name: video_text_content_class title: Video Text Content Class imports: - linkml:types - ../enums/GenerationMethodEnum - ../slots/has_title - ../slots/has_language - ../slots/has_quantity - ../slots/has_score - ../slots/generated_by - ../slots/verified_by - ../slots/provided_by - ../slots/has_confidence_measure - ../slots/has_time_interval - ../slots/has_source - ../slots/temporal_extent prefixes: linkml: https://w3id.org/linkml/ hc: https://nde.nl/ontology/hc/ schema: http://schema.org/ dcterms: http://purl.org/dc/terms/ prov: http://www.w3.org/ns/prov# crm: http://www.cidoc-crm.org/cidoc-crm/ skos: http://www.w3.org/2004/02/skos/core# oa: http://www.w3.org/ns/oa# default_prefix: hc classes: VideoTextContent: class_uri: crm:E73_Information_Object abstract: true description: "Abstract base class for all textual/derived content from videos.\n\n**DEFINITION**:\n\nVideoTextContent is the abstract parent for all text that is extracted,\ntranscribed, or derived from video content. This includes:\n\n| Subclass | Source | Description |\n|----------|--------|-------------|\n| VideoTranscript | Audio | Full text transcription of spoken content |\n| VideoSubtitle | Audio | Time-coded caption entries (SRT/VTT) |\n| VideoAnnotation | Visual | CV/multimodal-derived descriptions |\n\n**PROVENANCE REQUIREMENTS**:\n\nAll video-derived text MUST include comprehensive provenance:\n\n1. **Source**: Which video was processed (`source_video`)\n2. **Method**: How was content generated (`generation_method`)\n3. **Agent**: Who/what generated it (`generated_by`)\n4. **Time**: When was it generated (`generation_timestamp`)\n5. **Version**: Tool/model version (`model_version`)\n6. **Quality**: Overall confidence (`overall_confidence`)\n\n**PROV-O ALIGNMENT**:\n\nMaps\ \ to W3C PROV-O for provenance tracking:\n\n```turtle\n:transcript a hc:VideoTranscript ;\n prov:wasGeneratedBy :asr_activity ;\n prov:wasAttributedTo :whisper_model ;\n prov:generatedAtTime \"2025-12-01T10:00:00Z\" ;\n prov:wasDerivedFrom :source_video .\n```\n\n**CIDOC-CRM E73_Information_Object**:\n\n- E73 is the base for all identifiable immaterial items\n- Includes texts, computer programs, songs, recipes\n- VideoTextContent are E73 instances derived from video (E73)\n\n**GENERATION METHODS**:\n\n| Method | Description | Typical Confidence |\n|--------|-------------|-------------------|\n| ASR_AUTOMATIC | Automatic speech recognition | 0.75-0.95 |\n| ASR_ENHANCED | ASR with post-processing | 0.85-0.98 |\n| MANUAL_TRANSCRIPTION | Human transcription | 0.98-1.0 |\n| MANUAL_CORRECTION | Human-corrected ASR | 0.95-1.0 |\n| CV_AUTOMATIC | Computer vision detection | 0.60-0.90 |\n| MULTIMODAL | Combined audio+visual AI | 0.70-0.95 |\n| OCR | Optical character recognition\ \ | 0.80-0.98 |\n| PLATFORM_PROVIDED | From YouTube/Vimeo API | 0.85-0.95 |\n\n**HERITAGE INSTITUTION CONTEXT**:\n\nVideo text content is critical for:\n- **Accessibility**: Deaf/HoH users need accurate captions\n- **Discovery**: Full-text search over video collections\n- **Preservation**: Text outlasts video format obsolescence\n- **Research**: Analyzing spoken content at scale\n- **Translation**: Multilingual access to heritage content\n\n**LANGUAGE SUPPORT**:\n\n- `content_language`: Primary language of text content\n- May differ from video's default_audio_language if translated\n- ISO 639-1 codes (e.g., \"nl\", \"en\", \"de\")\n" exact_mappings: - crm:E73_Information_Object close_mappings: - prov:Entity related_mappings: - schema:CreativeWork - dcterms:Text slots: - has_language - has_title - generated_by - temporal_extent - verified_by - provided_by - generated_by - has_confidence_measure - has_time_interval - has_source - has_source - has_score - verified_by - has_quantity slot_usage: has_source: # range: string required: true examples: - value: FbIoC-Owy-M has_source: range: uri required: false examples: - value: https://www.youtube.com/watch?v=FbIoC-Owy-M has_language: # range: string required: true inlined: false # Fixed invalid inline for primitive type multivalued: true examples: - value: language_name: "Dutch" - value: language_name: "English" has_title: # range: string required: false examples: - value: De Vrijheidsroute Ep.3 - Dutch Transcript - value: YouTube Auto-captions - value: manual:curator@rijksmuseum.nl generated_by: range: GenerationEvent required: true inlined: true examples: - value: has_methodology: methodology_type: ASR_AUTOMATIC has_label: Automatic Speech Recognition - value: has_methodology: methodology_type: MANUAL_TRANSCRIPTION has_label: Manual Transcription temporal_extent: range: TimeSpan inlined: true required: false examples: - value: begin_of_the_begin: '2025-12-02T15:00:00Z' generated_by: # range: string required: false examples: - value: large-v3 - value: v2.3.1 provided_by: # range: string required: false examples: - value: OpenAI - value: Google Cloud has_confidence_measure: range: float required: false minimum_value: 0.0 maximum_value: 1.0 examples: - value: 0.92 verified_by: range: boolean required: false ifabsent: 'false' examples: - value: true verified_by: range: Verifier required: false inlined: true examples: - value: has_name: curator@rijksmuseum.nl has_time_interval: range: float required: false minimum_value: 0.0 examples: - value: 45.3 has_quantity: range: integer required: false multivalued: true inlined: false # Fixed invalid inline for primitive type inlined_as_list: false # Fixed invalid inline for primitive type examples: - value: - quantity_value: 1523 has_measurement_unit: has_type: WORD has_symbol: words has_description: Word count in transcript - quantity_value: 8742 has_measurement_unit: has_type: CHARACTER has_symbol: chars has_description: Character count including spaces comments: - Abstract base for all video-derived text content - Comprehensive PROV-O provenance tracking - Confidence scoring for AI-generated content - Verification workflow support - Critical for heritage accessibility and discovery see_also: - https://www.w3.org/TR/prov-o/ - http://www.cidoc-crm.org/cidoc-crm/E73_Information_Object annotations: specificity_score: 0.1 specificity_rationale: Generic utility class/slot created during migration custodian_types: "['*']"