84 lines
4.9 KiB
YAML
84 lines
4.9 KiB
YAML
id: https://nde.nl/ontology/hc/classes/UpdateFrequency
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name: UpdateFrequency
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title: UpdateFrequency
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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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dcterms: http://purl.org/dc/terms/
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dcat: http://www.w3.org/ns/dcat#
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schema: http://schema.org/
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time: http://www.w3.org/2006/time#
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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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rdfs: http://www.w3.org/2000/01/rdf-schema#
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org: http://www.w3.org/ns/org#
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xsd: http://www.w3.org/2001/XMLSchema#
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imports:
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- linkml:types
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- ./Quantity
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- ./TimeInterval
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- ../slots/has_or_had_quantity
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- ../slots/has_or_had_time_interval
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default_range: string
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classes:
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UpdateFrequency:
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description: "Structured representation of how often a device, system, or data source sends updates or refreshes data.\n**WHY A DEDICATED CLASS?**\nUpdate frequency is more than a simple string - it has: - **Quantity**: How many updates (e.g., \"5\" in \"every 5 minutes\") - **Time Interval**: The period (e.g., \"minutes\" in \"every 5 minutes\") - **Trigger-based**: Some updates are event-driven, not time-based\n**SLOT_FIXES.YAML REVISION** (lines 1893-1910): - Branch 1: has_or_had_quantity \u2192 Quantity (numeric value) - Branch 2: has_or_had_time_interval \u2192 TimeInterval (duration)\n**ONTOLOGY MAPPING**: - class_uri: dcterms:Frequency (Dublin Core) - Dublin Core `accrualPeriodicity` uses Frequency for collection update rates\n**USE CASES**: - IoT sensors: \"Every 5 minutes\", \"Hourly\", \"Real-time\" - Data feeds: \"Daily\", \"Weekly\", \"Monthly\" - Event-driven: \"On proximity trigger\", \"On change\"\n**EXAMPLES**: - Climate sensor: 5 updates per minute - Beacon: On proximity\
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\ trigger (no time interval) - Database sync: Daily at midnight"
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class_uri: dcterms:Frequency
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exact_mappings:
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- dcterms:Frequency
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- dcat:frequency
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close_mappings:
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- schema:Schedule
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related_mappings:
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- time:TemporalEntity
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slots:
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- has_or_had_quantity
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- has_or_had_time_interval
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attributes:
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frequency_description:
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range: string
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description: 'Human-readable description of the update frequency. Examples: "Every 5 minutes", "Hourly", "Real-time", "On proximity trigger"'
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is_event_driven:
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range: boolean
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description: 'True if updates are triggered by events rather than time intervals. Examples: beacon proximity triggers, change detection, user actions.'
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ifabsent: 'false'
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trigger_type:
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range: string
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description: 'Type of event that triggers updates (when is_event_driven is true). Examples: "proximity", "change", "request", "threshold"'
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slot_usage:
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has_or_had_quantity:
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range: Quantity
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inlined: true
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description: The numeric quantity component of the frequency. For "every 5 minutes", this would be a Quantity with value 5.
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examples:
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- value: "has_or_had_quantity:\n numeric_value: 5\n has_or_had_measurement_unit:\n has_or_had_symbol: \"updates\"\n"
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description: 5 updates per interval
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has_or_had_time_interval:
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range: TimeInterval
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inlined: true
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description: The time interval/period component of the frequency. For "every 5 minutes", this would be a TimeInterval representing minutes.
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examples:
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- value: "has_or_had_time_interval:\n duration_value: \"PT1M\"\n duration_description: \"per minute\"\n"
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description: Per-minute interval
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annotations:
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custodian_types: '["*"]'
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custodian_types_rationale: Update frequency applicable to all custodian types with IoT or data systems.
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custodian_types_primary: '*'
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specificity_score: 0.35
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specificity_rationale: Moderate specificity - relevant to custodians with digital/IoT infrastructure.
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examples:
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- value: "UpdateFrequency:\n frequency_description: \"Every 5 minutes\"\n has_or_had_quantity:\n numeric_value: 5\n has_or_had_time_interval:\n duration_value: \"PT1M\"\n duration_description: \"minute\"\n"
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description: Climate sensor updating every 5 minutes.
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- value: "UpdateFrequency:\n frequency_description: \"Hourly\"\n has_or_had_quantity:\n numeric_value: 1\n has_or_had_time_interval:\n duration_value: \"PT1H\"\n duration_description: \"hour\"\n"
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description: Hourly update frequency.
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- value: "UpdateFrequency:\n frequency_description: \"On proximity trigger\"\n is_event_driven: true\n trigger_type: \"proximity\"\n"
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description: Event-driven beacon updates (no time interval).
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- value: "UpdateFrequency:\n frequency_description: \"Real-time\"\n is_event_driven: true\n trigger_type: \"continuous\"\n"
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description: Real-time streaming updates.
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comments:
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- Created from slot_fixes.yaml migration (2026-01-14)
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- Replaces simple string update_frequency slot
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- Supports both time-based and event-driven frequencies
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- Uses Dublin Core Frequency class for semantic alignment
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