{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.population-size","code":"thing-q1613416","url":"https://ver.cy/models/thing/q1613416/","name":"population size","alternateNames":["low risk group","number of speakers","number of eligible voters","number of participants"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.QTY"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The number of inhabitants of a given place at a specified reference date, determined by a census or estimated using surveys, administrative records or modelling, with the place's boundaries and the definition of inhabitant stated.","purpose":"Let an agent handle counts of inhabitants by place, geographic boundaries, residence definition, data source, date and uncertainty, avoiding comparisons across incompatible definitions.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Population size counts the inhabitants of a given place.","The count depends on geographic boundaries and the definition of inhabitant.","Population size changes over time.","Population size is often estimated."],"structure":{"bundles":[{"id":"population","name":"Population","description":"Which population.","layers":[{"id":"definition","name":"Definition","description":"Who counts.","findings":[{"id":"definition-finding","name":"Definition","description":"Population definition.","questions":[{"text":"Which population is being counted, and how is membership defined?","kind":"definition"},{"text":"For which area and date?","kind":"provenance"}]}]},{"id":"figure","name":"Figure","description":"Count.","findings":[{"id":"figure-finding","name":"Figure","description":"Population figure.","questions":[{"text":"What is the population size, according to which source?","kind":"measurement"},{"text":"Is it a count or an estimate?","kind":"boundary"}]}]}]},{"id":"methods","name":"Methods","description":"Estimation.","layers":[{"id":"census","name":"Census","description":"Full counts.","findings":[{"id":"census-finding","name":"Census","description":"Census.","questions":[{"text":"When was the last census, and how complete was it?","kind":"provenance"},{"text":"How are undercounts handled?","kind":"definition"}]}]},{"id":"estimate","name":"Estimate","description":"Surveys and models.","findings":[{"id":"estimate-finding","name":"Estimate","description":"Estimates.","questions":[{"text":"How was the estimate produced, and what is its uncertainty?","kind":"measurement"},{"text":"Which model was used?","kind":"provenance"}]}]}]},{"id":"comparison","name":"Comparison","description":"Consistency.","layers":[{"id":"compare","name":"Compare","description":"Like with like.","findings":[{"id":"compare-finding","name":"Compare","description":"Comparisons.","questions":[{"text":"Are the populations defined the same way?","kind":"boundary"},{"text":"Are the dates comparable?","kind":"boundary"}]}]},{"id":"trends","name":"Trends","description":"Change.","findings":[{"id":"trends-finding","name":"Trends","description":"Trends.","questions":[{"text":"How has the population changed over time?","kind":"measurement"},{"text":"What drives the change?","kind":"provenance"}]}]}]},{"id":"applications","name":"Applications","description":"Uses.","layers":[{"id":"research","name":"Research","description":"Sample size.","findings":[{"id":"research-finding","name":"Research","description":"Sample size.","questions":[{"text":"Is the study sample size adequate for its conclusions?","kind":"boundary"},{"text":"How was it calculated?","kind":"measurement"}]}]},{"id":"wildlife","name":"Wildlife","description":"Species counts.","findings":[{"id":"wildlife-finding","name":"Wildlife","description":"Wildlife populations.","questions":[{"text":"What is the estimated population of this species, and how was it surveyed?","kind":"provenance"},{"text":"What does it mean for its conservation status?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Report population figures with their source, date and method of estimation.","Explain uncertainty in census counts and estimates of a place's inhabitants."],"mustNot":["Present an estimate as an exact count or mix figures from incompatible sources.","Use small-population data in a way that identifies individuals.","Inflate or deflate population figures to support a claim."],"requiresHuman":["Using population figures to allocate seats or funds requires human review."]},"ethics":{"considerations":["Counts decide representation and resources; undercounts harm already marginalised groups.","Data on small groups can expose them to discrimination."],"affectedParties":["Undercounted communities are affected.","Residents whose information contributes to counts or estimates are affected.","Communities whose representation or resources depend on population figures are affected."]},"owners":{"steward":"The body responsible for counting or estimating inhabitants, such as a national statistical office.","roles":[],"masterSystems":["Censuses and population registers maintain records of inhabitants."]},"relations":[{"target":"Q614112","type":"parent","note":"registry parent class"},{"target":"number of entities","type":"related","note":"category"},{"target":"census and survey","type":"related","note":"methods"},{"target":"population density","type":"related","note":"measure"},{"target":"statistics","type":"related","note":"field"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.population-size","Wikidata: Q1613416 (https://www.wikidata.org/wiki/Q1613416)"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"optional","items":["Counts with reference dates","Census and estimates","Population density is a different measure","Not physical; numbers in censuses, surveys and reports."]},"capabilities":{"applicability":"required","items":["find population figures with sources and dates","understand estimation methods","compare populations consistently","report uncertainty"]},"hazards":{"applicability":"required","items":["Outdated figures","Comparing different definitions","False precision"]},"interfaces":{"applicability":"required","items":["UN Principles and Recommendations for Population and Housing Censuses","National statistics law"]},"context":{"applicability":"required","items":["Planning, research, conservation and democracy.","human population sizes","speaker populations of languages","electorates","study sample sizes","wildlife population sizes"]}},"sources":[{"title":"Wikidata item Q1613416: population size","url":"https://www.wikidata.org/wiki/Q1613416","note":"identity and sense of the item"},{"title":"Wikipedia: Population size","url":"https://en.wikipedia.org/wiki/Population_size","note":"general description of the item"}],"openQuestions":["Should population kinds be separate entries?","How should reference dates be recorded?","How should uncertainty be shown?"],"resources":{"spec":"/models/things/publications/thing-q1613416/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q1613416/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T11:14:07Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:26+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}