assertion polarity
- CURIE:
gmeow:assertionPolarity - IRI: https://blackcatinformatics.ca/gmeow/assertionPolarity
- Category: property
- Defined by:
gmeow:slices/accessibility - Box roles: CBox role, RBox role (What is this?)
Whether the assertion is a positive feature, a negative barrier, or a limited/partial status. Functional per relator: one polarity per AccessibilityAssertion.
Structure
Property shape: object property; gmeow:AccessibilityAssertion -> gmeow:AccessibilityPolarity; functional
Practical Pattern
Use gmeow:assertionPolarity from gmeow:AccessibilityAssertion to gmeow:AccessibilityPolarity when the relationship itself belongs in the native GMEOW graph.
Example Snippets
These snippets are generated from canonical slice examples and trimmed to the Turtle blocks where this term appears.
Location Access
- Source:
slices/extensions/accessibility/examples/location-access.ttl - Examples catalog: open in catalog#example-slices-extensions-accessibility-examples-location-access
# SPDX-FileCopyrightText: 2026 Blackcat Informatics® Inc. <paudley@blackcatinformatics.ca>
# SPDX-License-Identifier: CC-BY-4.0
#
# Worked example: accessibility as MATCHABLE facets. One open vocabulary of
# gmeow:AccessibilityFacets (wheelchair, step-free, visual, auditory, cognitive …)
# is used across three relations: what a location HAS
# (gmeow:hasAccessibilityFeature), what it lacks as a gmeow:hasBarrier, and what an
# agent NEEDS (gmeow:hasAccessibilityNeed). Because need and feature draw on the
# same vocabulary, "Dana needs wheelchair access" and "the library has wheelchair
# access" MATCH directly. A reified gmeow:AccessibilityAssertion records who
# claims which facet, with a gmeow:assertionPolarity (feature / barrier / limited).
@prefix gmeow: <https://blackcatinformatics.ca/gmeow/> .
@prefix ex: <https://blackcatinformatics.ca/gmeow/examples/accessibility/> .
# --- A reified assertion: a surveyor claims the library is step-free (a feature).
ex:assertion a gmeow:AccessibilityAssertion ;
gmeow:assertionSubject ex:library ;
gmeow:assertionFacet gmeow:facetStepFree ;
gmeow:assertionPolarity gmeow:polarityFeature .