{ "model": { "rank": 12378, "code": "thing-q864897", "model_id": "vr.tr.single-elimination-tournament", "name": "single-elimination tournament", "purpose": "Let an agent handle single-elimination tournaments by bracket, seeding, rounds, byes and results.", "family": "Thing Registry", "category": "Activities and processes", "status": "research-draft", "kind": "thing", "plane": "ACT", "domain": "ACT.EVT", "industry": "", "version": "", "url": "/models/thing/q864897/", "tier": 2, "score": 40, "payload": { "layer": "wikidata", "aliases": [ "quarter-final", "NCAA Division II men's basketball tournament", "CollegeInsider.com Postseason Tournament", "NCAA Division I men's basketball tournament", "league cup", "Floorball Final4", "tie with replays possible", "Bergvall system", "2025 Women's Rugby World Cup knockout stage", "final four", "play-down", "National Football League playoffs", "best-of-seven elimination tournament", "two-legged tie", "international association football clubs cup", "Russian Bandy Cup", "2014 FNL Cup", "2015 FNL Cup", "2016 FNL Cup", "2013 FNL Cup", "2012 FNL Cup", "BBL Cup Winners' Cup", "2017 FNL Cup", "2018 FNL Cup", "2019 FNL Cup", "association football two-legged tie" ], "aliasCount": 26, "merged": 26, "knownIn": 40, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q864897", "url": "https://www.wikidata.org/wiki/Q864897", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T07:46:04Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 1, "engine": "claude" }, "metaModel": { "id": "THING-Q864897", "registryId": "vr.tr.single-elimination-tournament", "name": "single-elimination tournament", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "ACT.EVT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q864897/", "model": { "registry_id": "vr.tr.single-elimination-tournament", "name": "single-elimination tournament", "purpose": "Let an agent handle single-elimination tournaments by bracket, seeding, rounds, byes and results.", "definition": "A tournament format in which the loser of each match is immediately eliminated, rounds halving the field until a final decides the winner; used in cups, playoffs and many sports.", "what_it_is_for": "Deciding a winner quickly among many entrants.", "affordances": [ "build a bracket", "seed entrants", "assign byes", "track results round by round" ], "distinguishing_features": [ "One loss eliminates", "Rounds halve the field", "Seeding avoids early clashes", "Byes needed when entrants are not a power of two" ], "appearance": "A bracket diagram narrowing to a final.", "visual_identification": [ "Brackets with rounds such as quarter-finals", "Knockout cups", "Double elimination gives a second chance" ], "physical_properties": [], "families_and_kinds": [ "knockout cups", "playoff brackets", "seeded and random draws", "single-elimination with third-place match" ], "related_models": [ { "relation": "is a kind of", "target": "tournament", "why": "category" }, { "relation": "is contrasted with", "target": "round-robin and double elimination", "why": "formats" }, { "relation": "produces", "target": "champion", "why": "result" }, { "relation": "is used in", "target": "championship", "why": "events" } ], "identifiers": [], "standards_and_regulation": [ "Competition rules of each governing body" ], "failure_modes_and_hazards": [ "Unfair seeding", "Luck deciding outcomes", "Bracket errors" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "bracket", "name": "Bracket", "description": "Structure.", "rationale": "Structure is mathematical.", "layers": [ { "id": "size", "name": "Size", "description": "Entrants and rounds.", "findings": [ { "id": "size-finding", "name": "Size", "description": "Bracket size.", "questions": [ { "text": "How many entrants and rounds are there?", "kind": "measurement" }, { "text": "How many byes are needed?", "kind": "measurement" } ] } ] }, { "id": "seeding", "name": "Seeding", "description": "Placement.", "findings": [ { "id": "seeding-finding", "name": "Seeding", "description": "Seeding.", "questions": [ { "text": "How are entrants seeded?", "kind": "definition" }, { "text": "Is the draw random or ranked?", "kind": "definition" } ] } ] } ] }, { "id": "rules", "name": "Rules", "description": "Match rules.", "rationale": "Rules decide advancement.", "layers": [ { "id": "ties", "name": "Ties", "description": "Tie-breaks.", "findings": [ { "id": "ties-finding", "name": "Ties", "description": "Tie-breaks.", "questions": [ { "text": "How are drawn matches decided?", "kind": "provenance" }, { "text": "Is extra time or penalties used?", "kind": "definition" } ] } ] }, { "id": "third-place", "name": "Third place", "description": "Bronze match.", "findings": [ { "id": "third-place-finding", "name": "Third place", "description": "Third-place match.", "questions": [ { "text": "Is there a third-place match?", "kind": "definition" }, { "text": "Why?", "kind": "definition" } ] } ] } ] }, { "id": "results", "name": "Results", "description": "Progress.", "rationale": "Results need tracking.", "layers": [ { "id": "progress", "name": "Progress", "description": "Round results.", "findings": [ { "id": "progress-finding", "name": "Progress", "description": "Round results.", "questions": [ { "text": "Who advanced from each round?", "kind": "provenance" }, { "text": "Where are official results?", "kind": "provenance" } ] } ] }, { "id": "winner", "name": "Winner", "description": "Final.", "findings": [ { "id": "winner-finding", "name": "Winner", "description": "Winner.", "questions": [ { "text": "Who won the final?", "kind": "provenance" }, { "text": "When?", "kind": "provenance" } ] } ] } ] }, { "id": "fairness", "name": "Fairness", "description": "Format choice.", "rationale": "Formats have trade-offs.", "layers": [ { "id": "comparison", "name": "Comparison", "description": "Other formats.", "findings": [ { "id": "comparison-finding", "name": "Comparison", "description": "Format comparison.", "questions": [ { "text": "Why use single elimination instead of round-robin?", "kind": "definition" }, { "text": "What are the trade-offs?", "kind": "boundary" } ] } ] }, { "id": "data", "name": "Data", "description": "Bracket data.", "findings": [ { "id": "data-finding", "name": "Data", "description": "Bracket data.", "questions": [ { "text": "How should the bracket be stored as data?", "kind": "action" }, { "text": "Is it validated?", "kind": "boundary" } ] } ] } ] } ] }, "openQuestions": [ "Should seeding methods be separate entries?", "How should brackets be represented as data?", "How should named tournaments be linked?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "event or period", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a single-elimination tournament, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent handle single-elimination tournaments by bracket, seeding, rounds, byes and results.", "characteristics": { "substance": "activity", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: quarter-final, NCAA Division II men's basketball tournament, CollegeInsider.com Postseason Tournament, NCAA Division I men's basketball tournament, league cup, Floorball Final4, tie with replays possible, Bergvall system, 2025 Women's Rugby World Cup knockout stage, final four, play-down, National Football League playoffs.", "26 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 40 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a single-elimination tournament, and on what evidence are they told apart?" ], "whatItIsMadeOf": "something that happens over time", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Not a thing to see. Recognised by when it happened and who was involved, on the account of somebody." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "quarter-final", "NCAA Division II men's basketball tournament", "CollegeInsider.com Postseason Tournament", "NCAA Division I men's basketball tournament", "league cup", "Floorball Final4", "tie with replays possible", "Bergvall system", "2025 Women's Rugby World Cup knockout stage", "final four", "play-down", "National Football League playoffs" ] } ], "standing": "Described in 40 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 26 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one single-elimination tournament from another, and a single-elimination tournament from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a single-elimination tournament, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a single-elimination tournament, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a single-elimination tournament is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a single-elimination tournament, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a single-elimination tournament, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a single-elimination tournament is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a single-elimination tournament sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a single-elimination tournament, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a single-elimination tournament, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a single-elimination tournament is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a single-elimination tournament from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a single-elimination tournament, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a single-elimination tournament, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a single-elimination tournament is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a single-elimination tournament passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a single-elimination tournament between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a single-elimination tournament, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a single-elimination tournament, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a single-elimination tournament is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a single-elimination tournament, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a single-elimination tournament is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a single-elimination tournament, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a single-elimination tournament, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a single-elimination tournament is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "process-and-outcome", "name": "Process, inputs and outcome", "description": "How a single-elimination tournament proceeds, what it needs and what it leaves behind.", "rationale": "An activity is known by its steps and its results, and both have to be recordable while it is still running.", "layers": [ { "id": "steps-and-sequence", "name": "Steps and sequence", "description": "The steps of a single-elimination tournament, their order and what may run in parallel.", "findings": [ { "id": "steps-and-preconditions", "name": "Steps, preconditions and completion", "description": "What has to be true before each step of a single-elimination tournament and what marks it done.", "questions": [ { "id": "steps-and-preconditions-q01", "text": "What identifies and describes a step of a single-elimination tournament, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "steps-and-preconditions-q02", "text": "Who or what asserted this about a step of a single-elimination tournament, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "steps-and-preconditions-q03", "text": "What may an agent decide or do once a step of a single-elimination tournament is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "inputs-and-results", "name": "Inputs, resources and results", "description": "What a single-elimination tournament consumes and what it produces.", "findings": [ { "id": "inputs-and-outputs", "name": "Inputs, outputs and side effects", "description": "The resources a single-elimination tournament takes and the results it leaves, wanted or not.", "questions": [ { "id": "inputs-and-outputs-q01", "text": "What identifies and describes the inputs and results of a single-elimination tournament, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "inputs-and-outputs-q02", "text": "Who or what asserted this about the inputs and results of a single-elimination tournament, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "inputs-and-outputs-q03", "text": "What may an agent decide or do once the inputs and results of a single-elimination tournament is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "extent-and-dating", "name": "Temporal extent and dating", "description": "When single-elimination tournament began and ended, and who says so.", "rationale": "Dates for events are conventions held by historiographies that disagree, and a single confident date hides the disagreement.", "layers": [ { "id": "dating", "name": "Dating and calendar", "description": "Start, end, granularity and the calendar used.", "findings": [ { "id": "date-record", "name": "Dates, granularity and authority", "description": "What is dated, how precisely, and on whose account.", "questions": [ { "id": "date-record-q01", "text": "What start and end are conventionally given for single-elimination tournament, at what granularity, in which calendar?", "kind": "definition" }, { "id": "date-record-q02", "text": "Which accounts date it differently, and on what grounds?", "kind": "provenance" } ] } ] }, { "id": "membership-of-the-event", "name": "What counts as part of it", "description": "Sub-events included or excluded, and by whom.", "findings": [ { "id": "inclusion", "name": "Inclusion and exclusion", "description": "The episodes treated as inside the event and those left out.", "questions": [ { "id": "inclusion-q01", "text": "Which episodes are counted as part of single-elimination tournament, and which are treated as separate?", "kind": "boundary" }, { "id": "inclusion-q02", "text": "Whose framing is being followed in that inclusion, and who frames it otherwise?", "kind": "provenance" } ] } ] } ] }, { "id": "participants-and-consequence", "name": "Participants, causes and consequences", "description": "Who took part in single-elimination tournament and what is claimed to follow from it.", "rationale": "Causation around events is asserted rather than observed, so each claim needs the party asserting it.", "layers": [ { "id": "participants", "name": "Participants and roles", "description": "Parties involved and what each did.", "findings": [ { "id": "participant-record", "name": "Parties and their roles", "description": "Who is recorded as involved and in what capacity.", "questions": [ { "id": "participant-record-q01", "text": "Which parties took part in single-elimination tournament, in what roles, and on whose account?", "kind": "provenance" }, { "id": "participant-record-q02", "text": "Where do accounts disagree about who was involved?", "kind": "boundary" } ] } ] }, { "id": "consequences", "name": "Causes and consequences", "description": "What is claimed to have caused it and followed from it.", "findings": [ { "id": "causal-claims", "name": "Causal claims and who makes them", "description": "Antecedents and outcomes as attributed claims.", "questions": [ { "id": "causal-claims-q01", "text": "What causes and consequences are attributed to single-elimination tournament, and by whom?", "kind": "provenance" }, { "id": "causal-claims-q02", "text": "What would an agent need before treating such a claim as settled rather than contested?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a single-elimination tournament came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a single-elimination tournament and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a single-elimination tournament, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a single-elimination tournament, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a single-elimination tournament is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a single-elimination tournament is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a single-elimination tournament, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a single-elimination tournament, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a single-elimination tournament is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 6, "layers": 12, "findings": 14, "questions": 38 } } } }