{ "model": { "rank": 1593, "code": "thing-q38933", "model_id": "vr.tr.fever", "name": "fever", "purpose": "Let an agent explain fever and its patterns in general terms, route dangerous fevers and vulnerable patients to care, relay guidance on measurement and home care from health bodies, and describe causes and investigation with attribution.", "family": "Thing Registry", "category": "Information and virtual systems", "status": "research-draft", "kind": "thing", "plane": "INF", "domain": "INF.KNW", "industry": "", "version": "", "url": "/models/thing/q38933/", "tier": 2, "score": 136, "payload": { "layer": "wikidata", "aliases": [ "fever of unknown origin", "sudden onset of fever", "transient fever", "hyperpyrexia", "prolonged fever", "hectic fever", "postoperative fever", "psychogenic fever", "febrile seizure", "Pel-Ebstein fever", "viral fever", "remittent fever", "afebrile", "continuous fever", "fever during pregnancy", "intermittent fever", "recurrent fever", "high fever", "tomato fever", "low-grade fever", "cotton fever", "hyperthermia, cutaneous, with headaches and nausea", "febrile seizures, familial", "periodic fever", "very high fever", "Subfebrile" ], "aliasCount": 26, "merged": 27, "knownIn": 136, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.fever-feeling", "source": { "dataset": "wikidata", "item": "Q38933", "url": "https://www.wikidata.org/wiki/Q38933", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T23:30:49Z", "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": 2, "engine": "claude" }, "metaModel": { "id": "THING-Q38933", "registryId": "vr.tr.fever", "name": "fever", "version": "0.2.0-wave.2", "entryKind": "thing", "family": "Thing Registry", "domain": [ "INF.KNW" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q38933/", "model": { "registry_id": "vr.tr.fever", "name": "fever", "purpose": "Let an agent explain fever and its patterns in general terms, route dangerous fevers and vulnerable patients to care, relay guidance on measurement and home care from health bodies, and describe causes and investigation with attribution.", "definition": "A rise in body temperature above the normal range, a clinical sign of infection, inflammation or other conditions, ranging from transient and low-grade fever to prolonged fever and dangerous hyperpyrexia, with patterns such as hectic fever and the diagnostic category of fever of unknown origin; fever is measured with thermometers, managed with supportive care and, where needed, treatment of the cause, and is a common reason for seeking care.", "what_it_is_for": "Raised body temperature as a sign.", "affordances": [ "explain fever and patterns", "route dangerous fevers to care", "relay measurement and home care guidance", "describe causes and investigation" ], "distinguishing_features": [ "Clinical sign", "Temperature thresholds", "Patterns and duration", "Vulnerable groups" ], "appearance": "Elevated temperature, often with chills, sweating and malaise.", "visual_identification": [ "Body temperature above normal", "Sign of infection or inflammation", "Hyperthermia from heat exposure differs in mechanism" ], "physical_properties": [], "families_and_kinds": [ "low-grade and transient fever", "prolonged fever", "hyperpyrexia", "fever of unknown origin", "fever patterns such as hectic and intermittent fever" ], "related_models": [ { "relation": "is a kind of", "target": "clinical sign", "why": "category" }, { "relation": "is related to", "target": "influenza", "why": "a common cause" }, { "relation": "is related to", "target": "abscess", "why": "infection with fever" }, { "relation": "is related to", "target": "emergency department", "why": "care for dangerous fever" } ], "identifiers": [], "standards_and_regulation": [ "Clinical guidelines on fever in children and adults", "Thermometer accuracy standards", "Public health guidance during outbreaks" ], "failure_modes_and_hazards": [ "Missed sepsis or meningitis", "Agents giving individual dosing advice", "Overtreating mild fever" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "urgent", "name": "Urgent", "description": "Dangerous fever.", "rationale": "Routing.", "layers": [ { "id": "redflags", "name": "Red flags", "description": "Emergency signs.", "findings": [ { "id": "redflags-finding", "name": "Red flags", "description": "Red flags.", "questions": [ { "text": "Are there signs such as very high temperature, stiff neck, rash that does not fade, breathing difficulty, confusion, or fever in a very young infant that need urgent care?", "kind": "boundary" }, { "text": "Should emergency services be called now?", "kind": "action" } ] } ] }, { "id": "vulnerable", "name": "Vulnerable", "description": "Vulnerable people.", "findings": [ { "id": "vulnerable-finding", "name": "Vulnerable", "description": "Vulnerable.", "questions": [ { "text": "Which groups, such as infants, older people, pregnant people and the immunocompromised, need earlier assessment for fever, according to guidance?", "kind": "provenance" }, { "text": "Is the user asking for a diagnosis, which needs a clinician?", "kind": "boundary" } ] } ] } ] }, { "id": "understand", "name": "Understand", "description": "What fever is.", "rationale": "General information.", "layers": [ { "id": "mechanism", "name": "Mechanism", "description": "How fever arises.", "findings": [ { "id": "mechanism-finding", "name": "Mechanism", "description": "Mechanism.", "questions": [ { "text": "How does the body raise its temperature in fever, and what purpose does it serve?", "kind": "definition" }, { "text": "How does fever differ from hyperthermia?", "kind": "definition" } ] } ] }, { "id": "patterns", "name": "Patterns", "description": "Patterns and unknown origin.", "findings": [ { "id": "patterns-finding", "name": "Patterns", "description": "Patterns.", "questions": [ { "text": "What are fever patterns such as hectic or intermittent fever, and what is fever of unknown origin?", "kind": "definition" }, { "text": "How is prolonged fever investigated, in general terms?", "kind": "provenance" } ] } ] } ] }, { "id": "manage", "name": "Manage", "description": "Measuring and home care.", "rationale": "Guidance.", "layers": [ { "id": "measure", "name": "Measure", "description": "Measuring temperature.", "findings": [ { "id": "measure-finding", "name": "Measure", "description": "Measurement.", "questions": [ { "text": "How should temperature be measured, and what thresholds define fever in children and adults, according to guidance?", "kind": "provenance" }, { "text": "Which thermometers are reliable?", "kind": "provenance" } ] } ] }, { "id": "homecare", "name": "Home care", "description": "Home care.", "findings": [ { "id": "homecare-finding", "name": "Home care", "description": "Home care.", "questions": [ { "text": "What general home care do health bodies advise for mild fever, and when should medicines be considered, without individual dosing advice?", "kind": "provenance" }, { "text": "Which entry fits a specific medicine?", "kind": "action" } ] } ] } ] }, { "id": "learn", "name": "Learn", "description": "Causes and teaching.", "rationale": "Context.", "layers": [ { "id": "causes", "name": "Causes", "description": "Causes of fever.", "findings": [ { "id": "causes-finding", "name": "Causes", "description": "Causes.", "questions": [ { "text": "What are common and serious causes of fever, and how do they vary by age and region?", "kind": "provenance" }, { "text": "Which entry fits a specific infection?", "kind": "action" } ] } ] }, { "id": "teach", "name": "Teach", "description": "Teaching.", "findings": [ { "id": "teach-finding", "name": "Teach", "description": "Teaching.", "questions": [ { "text": "How can fever assessment be taught to caregivers and students?", "kind": "action" }, { "text": "Which misconceptions arise?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Should fever in children be a separate entry?", "How should guidelines be linked?", "How should emergency contacts be localised?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "disease or condition", "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 fever, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain fever and its patterns in general terms, route dangerous fevers and vulnerable patients to care, relay guidance on measurement and home care from health bodies, and describe causes and investigation with attribution.", "characteristics": { "substance": "information", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "read and interpreted" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: fever of unknown origin, sudden onset of fever, transient fever, hyperpyrexia, prolonged fever, hectic fever, postoperative fever, psychogenic fever, febrile seizure, Pel-Ebstein fever, viral fever, remittent fever.", "27 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 136 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 fever, and on what evidence are they told apart?" ], "whatItIsMadeOf": "content that has to be carried by something else", "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": [ "read it and act on what it says" ], "howItIsRecognised": [ "Recognised by criteria applied to signs and findings, not by appearance. Two conditions can look identical and be distinguished only by test." ], "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": [ "fever of unknown origin", "sudden onset of fever", "transient fever", "hyperpyrexia", "prolonged fever", "hectic fever", "postoperative fever", "psychogenic fever", "febrile seizure", "Pel-Ebstein fever", "viral fever", "remittent fever" ] } ], "standing": "Described in 136 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 27 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 fever from another, and a fever 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 fever, 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 fever, 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 fever 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 fever, 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 fever, 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 fever 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 fever 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 fever, 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 fever, 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 fever 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 fever from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a fever, 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 fever, 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 fever 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 fever 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 fever between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a fever, 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 fever, 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 fever 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 fever, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a fever 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 fever, 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 fever, 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 fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "content-and-access", "name": "Content, encoding and access", "description": "What a fever says, how it is encoded and who may read it.", "rationale": "An informational thing carries content that can be copied, versioned and withheld, none of which its physical carrier explains.", "layers": [ { "id": "content-and-encoding", "name": "Content and encoding", "description": "The content itself, its format and its language.", "findings": [ { "id": "content-and-format", "name": "Content, format and language", "description": "What a fever contains and in what form it is held.", "questions": [ { "id": "content-and-format-q01", "text": "What identifies and describes the content of a fever, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "content-and-format-q02", "text": "Who or what asserted this about the content of a fever, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "content-and-format-q03", "text": "What may an agent decide or do once the content of a fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "access-and-rights", "name": "Access, rights and retention", "description": "Who may read, copy or change it, and for how long it is kept.", "findings": [ { "id": "access-rules", "name": "Access rules and retention", "description": "The permissions attached to a fever and the period it survives.", "questions": [ { "id": "access-rules-q01", "text": "What identifies and describes access to a fever, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "access-rules-q02", "text": "Who or what asserted this about access to a fever, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "access-rules-q03", "text": "What may an agent decide or do once access to a fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "diagnosis-and-criteria", "name": "Diagnosis, criteria and coding", "description": "What makes a case of fever a case, and under which revision.", "rationale": "Criteria change between revisions, so a diagnosis without its coding revision cannot be compared with a later one.", "layers": [ { "id": "criteria", "name": "Diagnostic criteria", "description": "The criteria in force and who issues them.", "findings": [ { "id": "criteria-record", "name": "Criteria, issuer and revision", "description": "What must be true for a diagnosis, according to whom.", "questions": [ { "id": "criteria-record-q01", "text": "What criteria define fever, issued by which body, in which revision?", "kind": "definition" }, { "id": "criteria-record-q02", "text": "What changed between revisions that would reclassify existing cases?", "kind": "boundary" } ] } ] }, { "id": "coding", "name": "Coding and terminology", "description": "The codes used to record it and their mapping.", "findings": [ { "id": "coding-record", "name": "Codes and mappings", "description": "Which classification codes apply and how they map.", "questions": [ { "id": "coding-record-q01", "text": "Which classification and terminology codes cover fever, and how do they map to each other?", "kind": "definition" }, { "id": "coding-record-q02", "text": "What is lost when a case is mapped from one scheme to another?", "kind": "boundary" } ] } ] } ] }, { "id": "course-and-population", "name": "Course, population and care", "description": "How fever develops, whom it affects, and what is done about it.", "rationale": "The condition, the diagnosis and the episode of care are three different things, and an agent must not merge them.", "layers": [ { "id": "course", "name": "Course and stages", "description": "Onset, progression, remission and outcome.", "findings": [ { "id": "course-record", "name": "Stages and transitions", "description": "The stages recorded and what moves a case between them.", "questions": [ { "id": "course-record-q01", "text": "What course does fever typically take, and what marks each stage?", "kind": "definition" }, { "id": "course-record-q02", "text": "What separates the condition itself from an episode of care for it?", "kind": "boundary" } ] } ] }, { "id": "population", "name": "Affected populations", "description": "Who is affected, how often, and on what evidence.", "findings": [ { "id": "epidemiology", "name": "Prevalence and its basis", "description": "Rates with their population, period and source.", "questions": [ { "id": "epidemiology-q01", "text": "What prevalence or incidence is reported for fever, in which population and period?", "kind": "measurement" }, { "id": "epidemiology-q02", "text": "What may an agent not conclude about an individual from a population rate?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a fever 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 fever and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a fever, 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 fever, 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 fever 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 fever is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a fever, 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 fever, 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 fever 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 } } } }