minimum population
- CURIE:
gmeow:minimumPopulation - IRI: https://blackcatinformatics.ca/gmeow/minimumPopulation
- Category: property
- Defined by:
gmeow:slices/aggregation - Box roles: RBox role (What is this?)
The minimum population size (k) required for the aggregation result to be disclosed — the k-anonymity parameter. A result failing this check is suppressed at projection time (coarsen or withhold, Principle 10), never deleted.
Structure
Property shape: datatype property; gmeow:SpatialAggregation -> xsd:nonNegativeInteger; functional
Practical Pattern
Use gmeow:minimumPopulation from gmeow:SpatialAggregation to xsd:nonNegativeInteger 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.
Spatial Bins
- Source:
slices/extensions/aggregation/examples/spatial-bins.ttl - Examples catalog: open in catalog#example-slices-extensions-aggregation-examples-spatial-bins
# SPDX-FileCopyrightText: 2026 Blackcat Informatics® Inc. <paudley@blackcatinformatics.ca>
# SPDX-License-Identifier: CC-BY-4.0
#
# Worked example: spatial aggregation IS a measurement, with a privacy floor
# . A gmeow:SpatialAggregation is a gmeow:Measurement (so it carries the
# observation bundle: observedFeature, vantage, observationMethod, result) that
# applies a gmeow:aggregationFunction (average / count / density …) over
# gmeow:SpatialBins. gmeow:minimumPopulation is the k-anonymity floor: bins with
# fewer than that many people are NOT reported, so the aggregate can be published
# without re-identifying individuals (P12 — the safe public projection).
@prefix gmeow: <https://blackcatinformatics.ca/gmeow/> .
@prefix ex: <https://blackcatinformatics.ca/gmeow/examples/aggregation/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
# --- The aggregation: average household size over the region, by survey, with a
# 1000-person minimum-population floor for safe publication.
ex:householdAgg a gmeow:SpatialAggregation ;
gmeow:observedFeature ex:metro ;
gmeow:vantage ex:censusBureau ;
gmeow:observationMethod gmeow:methodSurvey ;
gmeow:aggregationFunction gmeow:aggAverage ;
gmeow:minimumPopulation "1000"^^xsd:nonNegativeInteger ;
gmeow:hasBin ex:downtownBin ;
gmeow:observationResult ex:avgHouseholdSize .