{ "model": { "rank": 6152, "code": "thing-q189962", "model_id": "vr.tr.interval", "name": "interval", "purpose": "Let an agent handle musical intervals by name, size in semitones and cents, frequency ratio and tuning system.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.TME", "industry": "", "version": "", "url": "/models/thing/q189962/", "tier": 2, "score": 62, "payload": { "layer": "wikidata", "aliases": [ "consonance", "Supermajor interval", "harmonic interval", "Pythagorean interval", "Incomposite interval", "eleventh", "twelfth", "thirteenth", "fourteenth", "fifteenth", "ninth", "pure interval", "octave", "microtone", "octave designation", "tritone", "neutral interval", "tenth", "neutral seventh", "augmented octave", "diminished octave", "pseudo-octave", "Limma" ], "aliasCount": 23, "merged": 23, "knownIn": 62, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.interval-communication", "source": { "dataset": "wikidata", "item": "Q189962", "url": "https://www.wikidata.org/wiki/Q189962", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T05:22:06Z", "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-Q189962", "registryId": "vr.tr.interval", "name": "interval", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.TME" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q189962/", "model": { "registry_id": "vr.tr.interval", "name": "interval", "purpose": "Let an agent handle musical intervals by name, size in semitones and cents, frequency ratio and tuning system.", "definition": "In music, the difference in pitch between two notes, named by the number of scale steps (second, third, fifth) and quality (major, minor, perfect), and expressed as a frequency ratio.", "what_it_is_for": "Describing melody and harmony, tuning instruments and analysing music.", "affordances": [ "name and identify it by ear or score", "compute its size in semitones and cents", "tune it, in a tuning system", "use it, in composition and analysis" ], "distinguishing_features": [ "Pitch difference between two notes", "Named by number and quality", "Size depends on tuning system", "Harmonic (simultaneous) or melodic (successive)" ], "appearance": "Two notes on a staff at a distance, or two sounds heard together or in sequence.", "visual_identification": [ "Distance between noteheads on a staff", "Names such as perfect fifth, major third", "Ratios such as 3:2 for a just fifth" ], "physical_properties": [ { "quantity": "octave ratio", "typical_range": "2:1", "unit": "frequency ratio", "note": "1200 cents" }, { "quantity": "equal-tempered semitone", "typical_range": "100", "unit": "cents", "note": "" } ], "families_and_kinds": [ "perfect, major, minor, augmented, diminished intervals", "consonant and dissonant intervals", "just and Pythagorean intervals", "compound intervals such as the eleventh", "microtonal intervals" ], "related_models": [ { "relation": "is measured as", "target": "frequency ratio", "why": "physical basis" }, { "relation": "relates to", "target": "frequency", "why": "pitch" }, { "relation": "is part of", "target": "scale and chord", "why": "musical structures" }, { "relation": "is confused with", "target": "time interval", "why": "a different sense" } ], "identifiers": [], "standards_and_regulation": [ "ISO 16 standard tuning A = 440 Hz" ], "failure_modes_and_hazards": [ "Mixing tuning systems when computing sizes", "Enharmonic confusion (augmented fourth vs diminished fifth)" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "naming", "name": "Naming", "description": "Number and quality.", "rationale": "Names encode function in tonal music.", "layers": [ { "id": "name", "name": "Name", "description": "Interval name.", "findings": [ { "id": "name-finding", "name": "Name", "description": "Name of the interval.", "questions": [ { "text": "What is the interval name?", "kind": "definition" }, { "text": "Is an enharmonic spelling intended?", "kind": "boundary" } ] } ] }, { "id": "direction", "name": "Direction and type", "description": "Melodic or harmonic.", "findings": [ { "id": "direction-finding", "name": "Type", "description": "Melodic or harmonic.", "questions": [ { "text": "Is it melodic or harmonic, ascending or descending?", "kind": "definition" }, { "text": "Is it simple or compound?", "kind": "definition" } ] } ] } ] }, { "id": "size", "name": "Size", "description": "Semitones, cents, ratio.", "rationale": "Size depends on tuning.", "layers": [ { "id": "measure", "name": "Measure", "description": "Cents and semitones.", "findings": [ { "id": "measure-finding", "name": "Size", "description": "Size values.", "questions": [ { "text": "How large is it in semitones and cents?", "kind": "measurement" }, { "text": "In which tuning system?", "kind": "definition" } ] } ] }, { "id": "ratio", "name": "Ratio", "description": "Frequency ratio.", "findings": [ { "id": "ratio-finding", "name": "Ratio", "description": "Frequency ratio.", "questions": [ { "text": "What frequency ratio does it correspond to?", "kind": "measurement" }, { "text": "How far is equal temperament from just intonation here?", "kind": "measurement" } ] } ] } ] }, { "id": "function", "name": "Function", "description": "Role in music.", "rationale": "Intervals build harmony and melody.", "layers": [ { "id": "consonance", "name": "Consonance", "description": "Consonant or dissonant.", "findings": [ { "id": "consonance-finding", "name": "Consonance", "description": "Consonance status.", "questions": [ { "text": "Is it consonant or dissonant in this style?", "kind": "definition" }, { "text": "How is it resolved?", "kind": "definition" } ] } ] }, { "id": "context", "name": "Context", "description": "Scale and chord.", "findings": [ { "id": "context-finding", "name": "Context", "description": "Role in context.", "questions": [ { "text": "What role does it play in this chord or scale?", "kind": "definition" }, { "text": "Which tradition defines that role?", "kind": "provenance" } ] } ] } ] }, { "id": "tuning", "name": "Tuning", "description": "Getting it in tune.", "rationale": "Tuning decides how intervals sound.", "layers": [ { "id": "system", "name": "System", "description": "Equal, just, other.", "findings": [ { "id": "system-finding", "name": "Tuning system", "description": "The tuning system.", "questions": [ { "text": "Which tuning system is used?", "kind": "definition" }, { "text": "What reference pitch?", "kind": "measurement" } ] } ] }, { "id": "practice", "name": "Practice", "description": "Tuning by ear or device.", "findings": [ { "id": "practice-finding", "name": "Tuning practice", "description": "How it is tuned.", "questions": [ { "text": "How can this interval be tuned accurately?", "kind": "action" }, { "text": "What beat rate indicates tuning?", "kind": "measurement" } ] } ] } ] } ] }, "openQuestions": [ "Should each interval be a separate entry?", "How should tuning systems be linked?", "How should non-Western interval systems be represented?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "abstract concept", "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 interval, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent handle musical intervals by name, size in semitones and cents, frequency ratio and tuning system.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: consonance, Supermajor interval, harmonic interval, Pythagorean interval, Incomposite interval, eleventh, twelfth, thirteenth, fourteenth, fifteenth, ninth, pure interval.", "23 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 62 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 interval, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "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": [ "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about." ], "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": [ "consonance", "Supermajor interval", "harmonic interval", "Pythagorean interval", "Incomposite interval", "eleventh", "twelfth", "thirteenth", "fourteenth", "fifteenth", "ninth", "pure interval" ] } ], "standing": "Described in 62 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 23 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 interval from another, and a interval 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 interval, 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 interval, 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 interval 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 interval, 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 interval, 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 interval 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 interval 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 interval, 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 interval, 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 interval 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 interval from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a interval, 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 interval, 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 interval 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 interval 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 interval between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a interval, 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 interval, 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 interval 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 interval, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a interval 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 interval, 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 interval, 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 interval is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definitions-in-contest", "name": "Definitions and who holds them", "description": "What interval is taken to mean, and by whom.", "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.", "layers": [ { "id": "competing-definitions", "name": "Competing definitions", "description": "The main readings and the traditions behind them.", "findings": [ { "id": "definition-map", "name": "Definitions and their holders", "description": "Each definition with the school or body that holds it.", "questions": [ { "id": "definition-map-q01", "text": "Which definitions of interval are in use, and which tradition or body holds each?", "kind": "definition" }, { "id": "definition-map-q02", "text": "What turns on the difference between them in practice?", "kind": "boundary" } ] } ] }, { "id": "operationalisation", "name": "Operationalisation", "description": "How it is measured or applied when it has to be.", "findings": [ { "id": "operational-record", "name": "Measures and proxies", "description": "Instruments and indicators used to stand in for it.", "questions": [ { "id": "operational-record-q01", "text": "How is interval operationalised or measured in practice, and by what instrument?", "kind": "measurement" }, { "id": "operational-record-q02", "text": "What does that operationalisation leave out, and when does that matter?", "kind": "boundary" } ] } ] } ] }, { "id": "instances-and-use", "name": "Instances, use and consequence", "description": "What counts as an instance of interval and what follows from calling something that.", "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.", "layers": [ { "id": "instances", "name": "What counts as an instance", "description": "Clear cases, borderline cases and non-cases.", "findings": [ { "id": "instance-tests", "name": "Tests for an instance", "description": "What would settle whether something falls under it.", "questions": [ { "id": "instance-tests-q01", "text": "What would settle whether something is an instance of interval?", "kind": "boundary" }, { "id": "instance-tests-q02", "text": "Which borderline cases are argued about, and on what grounds?", "kind": "definition" } ] } ] }, { "id": "consequence", "name": "Consequence of application", "description": "Rights, duties or decisions that follow from the label.", "findings": [ { "id": "consequence-record", "name": "What the label licenses", "description": "What an agent may do once something is classified this way.", "questions": [ { "id": "consequence-record-q01", "text": "What follows practically once something is treated as interval?", "kind": "action" }, { "id": "consequence-record-q02", "text": "What must an agent not infer from the label alone?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a interval 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 interval and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a interval, 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 interval, 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 interval 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 interval is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a interval, 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 interval, 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 interval is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }