{ "model": { "rank": 12569, "code": "thing-q483373", "model_id": "vr.tr.electric-multiple-unit", "name": "electric multiple unit", "purpose": "Let an agent handle electric multiple units by class, operator, route, accessibility and technical features.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.OBJ", "industry": "", "version": "", "url": "/models/thing/q483373/", "tier": 2, "score": 39, "payload": { "layer": "wikidata", "aliases": [ "Osaka Municipal Transportation Bureau 200 series", "Hiroshima Rapid Transit 7000 series", "InterCity+", "Renfe Class 801", "Stadler GTW 2/8", "ÖBB 4734/4736", "DBAG Class 481", "E4 Series Shinkansen", "E1 Series Shinkansen", "battery electric multiple unit", "Stadler RS Zero", "Bombardier Talent 3", "Bo′Bo′Bo′Bo′", "SNCF TGV POS", "SNCF Class U 25500 of Transilien", "DB Class 406", "Athens Metro 2nd Generation trains (AC/DC)", "ET 2010", "SNCF TGV 2N2", "TRA EMU800", "FS Class ETR.421", "FS Class ETR.521", "FS Class ETR.621", "TN Class ETR.522", "CRRC DDEMU2", "SL Stadler X15p", "Hitachi Caravaggio", "WLB series 500", "Firema E 84", "Alstom MRP 236", "Nagaden 3000 series", "Toei 6500 series", "CP 3400 Series", "SuperVia 3000 series", "CPTM Série 2000", "CPTM 7000 series", "CPTM 8000 series", "CPTM 5000 series", "CPTM 4800 series", "RFFSA 700 series" ], "aliasCount": 2000, "merged": 2000, "knownIn": 39, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q483373", "url": "https://www.wikidata.org/wiki/Q483373", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-11T10:25:10Z", "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-Q483373", "registryId": "vr.tr.electric-multiple-unit", "name": "electric multiple unit", "version": "0.2.0-wave.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q483373/", "model": { "registry_id": "vr.tr.electric-multiple-unit", "name": "electric multiple unit", "purpose": "Let an agent handle electric multiple units by class, operator, route, accessibility and technical features.", "definition": "A train consisting of self-propelled carriages powered by electricity from overhead lines or a third rail, with motors distributed along the train rather than a separate locomotive, used for commuter, regional, metro and high-speed services.", "what_it_is_for": "Electric passenger rail services.", "affordances": [ "identify EMU classes and operators", "check accessibility features", "find technical specifications", "follow heritage and preserved units" ], "distinguishing_features": [ "Distributed traction", "Electric supply from infrastructure", "Fast acceleration", "Common on commuter networks" ], "appearance": "Multi-car trains with pantographs or third-rail shoes and cabs at both ends.", "visual_identification": [ "Class or series numbers", "Pantographs on the roof", "Locomotive-hauled trains have a separate power unit" ], "physical_properties": [], "families_and_kinds": [ "commuter EMUs", "regional EMUs", "metro trains", "high-speed EMUs", "battery EMUs (hybrid)" ], "related_models": [ { "relation": "is a kind of", "target": "multiple unit and electric vehicle", "why": "category" }, { "relation": "is powered by", "target": "railway electrification", "why": "supply" }, { "relation": "runs on", "target": "railway line", "why": "infrastructure" }, { "relation": "is contrasted with", "target": "diesel multiple unit", "why": "related" } ], "identifiers": [ { "scheme": "class or series number", "value_or_pattern": "operator scheme", "note": "fleet" } ], "standards_and_regulation": [ "EU Technical Specifications for Interoperability", "TSI PRM accessibility requirements" ], "failure_modes_and_hazards": [ "Electrical hazards near overhead lines", "Platform-train gap accidents" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "identity", "name": "Identity", "description": "Which unit.", "rationale": "Classes identify.", "layers": [ { "id": "class", "name": "Class", "description": "Series.", "findings": [ { "id": "class-finding", "name": "Class", "description": "Class.", "questions": [ { "text": "Which class or series is it, and who built it?", "kind": "provenance" }, { "text": "Which operator runs it?", "kind": "provenance" } ] } ] }, { "id": "routes", "name": "Routes", "description": "Services.", "findings": [ { "id": "routes-finding", "name": "Routes", "description": "Routes.", "questions": [ { "text": "On which routes does it operate?", "kind": "provenance" }, { "text": "Is it still in service?", "kind": "provenance" } ] } ] } ] }, { "id": "technical", "name": "Technical", "description": "Specifications.", "rationale": "Specifications matter.", "layers": [ { "id": "power", "name": "Power", "description": "Supply.", "findings": [ { "id": "power-finding", "name": "Power", "description": "Power supply.", "questions": [ { "text": "Which voltage and current system does it use?", "kind": "definition" }, { "text": "What is its maximum speed?", "kind": "measurement" } ] } ] }, { "id": "capacity", "name": "Capacity", "description": "Seats.", "findings": [ { "id": "capacity-finding", "name": "Capacity", "description": "Capacity.", "questions": [ { "text": "How many seats and standing places does it have?", "kind": "measurement" }, { "text": "How many cars?", "kind": "measurement" } ] } ] } ] }, { "id": "passengers", "name": "Passengers", "description": "Accessibility.", "rationale": "Access matters.", "layers": [ { "id": "access", "name": "Access", "description": "Step-free.", "findings": [ { "id": "access-finding", "name": "Access", "description": "Accessibility.", "questions": [ { "text": "Does it offer level boarding and wheelchair spaces?", "kind": "provenance" }, { "text": "How can assistance be booked?", "kind": "action" } ] } ] }, { "id": "facilities", "name": "Facilities", "description": "On board.", "findings": [ { "id": "facilities-finding", "name": "Facilities", "description": "Facilities.", "questions": [ { "text": "Are there toilets, power sockets and information screens?", "kind": "provenance" }, { "text": "Is there Wi-Fi?", "kind": "provenance" } ] } ] } ] }, { "id": "safety", "name": "Safety", "description": "Electric railway.", "rationale": "Electric railways are dangerous.", "layers": [ { "id": "electric", "name": "Electric", "description": "Overhead lines.", "findings": [ { "id": "electric-finding", "name": "Electric", "description": "Electrical safety.", "questions": [ { "text": "What safety rules apply near overhead lines and third rails?", "kind": "provenance" }, { "text": "Why must people never climb on trains?", "kind": "definition" } ] } ] }, { "id": "heritage", "name": "Heritage", "description": "Preserved units.", "findings": [ { "id": "heritage-finding", "name": "Heritage", "description": "Preserved units.", "questions": [ { "text": "Are any units preserved?", "kind": "provenance" }, { "text": "Where can they be seen?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Should each class be a separate entry?", "How should fleet data be linked?", "How should preserved units be handled?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "unit, quantity or measure", "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 electric multiple unit, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent handle electric multiple units by class, operator, route, accessibility and technical features.", "characteristics": { "substance": "material", "origin": "manufactured", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: Osaka Municipal Transportation Bureau 200 series, Hiroshima Rapid Transit 7000 series, InterCity+, Renfe Class 801, Stadler GTW 2/8, ÖBB 4734/4736, DBAG Class 481, E4 Series Shinkansen, E1 Series Shinkansen, battery electric multiple unit, Stadler RS Zero, Bombardier Talent 3.", "2000 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 39 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 electric multiple unit, and on what evidence are they told apart?" ], "whatItIsMadeOf": "matter you can touch", "physicalCharacter": [ "Mobility varies between examples.", "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: a unit is a convention. What is seen is an instrument reading in it." ], "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": [ "Osaka Municipal Transportation Bureau 200 series", "Hiroshima Rapid Transit 7000 series", "InterCity+", "Renfe Class 801", "Stadler GTW 2/8", "ÖBB 4734/4736", "DBAG Class 481", "E4 Series Shinkansen", "E1 Series Shinkansen", "battery electric multiple unit", "Stadler RS Zero", "Bombardier Talent 3" ] } ], "standing": "Described in 39 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 2000 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 electric multiple unit from another, and a electric multiple unit 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 electric multiple unit, 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 electric multiple unit, 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 electric multiple unit 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 electric multiple unit, 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 electric multiple unit, 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 electric multiple unit 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 electric multiple unit 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 electric multiple unit, 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 electric multiple unit, 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 electric multiple unit 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 electric multiple unit from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a electric multiple unit, 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 electric multiple unit, 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 electric multiple unit is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "form-and-composition", "name": "Form, composition and condition", "description": "What a electric multiple unit is made of, what shape and size it takes, and what state it is in.", "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.", "layers": [ { "id": "form-and-dimensions", "name": "Form and dimensions", "description": "Shape, size, mass and the ranges these take across examples.", "findings": [ { "id": "measurable-dimensions", "name": "Measurable dimensions and their units", "description": "The quantities worth recording and the units they are recorded in.", "questions": [ { "id": "measurable-dimensions-q01", "text": "What identifies and describes the dimensions of a electric multiple unit, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "measurable-dimensions-q02", "text": "Who or what asserted this about the dimensions of a electric multiple unit, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "measurable-dimensions-q03", "text": "What may an agent decide or do once the dimensions of a electric multiple unit is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "material-and-composition", "name": "Material and composition", "description": "Materials, parts and how they are put together.", "findings": [ { "id": "parts-and-materials", "name": "Parts and materials", "description": "What a electric multiple unit is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a electric multiple unit, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "parts-and-materials-q02", "text": "Who or what asserted this about the composition of a electric multiple unit, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "parts-and-materials-q03", "text": "What may an agent decide or do once the composition of a electric multiple unit is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "condition-and-integrity", "name": "Condition and integrity", "description": "Wear, damage, health and the difference between working and broken.", "findings": [ { "id": "condition-assessment", "name": "Condition, damage and health", "description": "How the condition of a electric multiple unit is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a electric multiple unit, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "condition-assessment-q02", "text": "Who or what asserted this about the condition of a electric multiple unit, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "condition-assessment-q03", "text": "What may an agent decide or do once the condition of a electric multiple unit is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "place-and-movement", "name": "Place and movement", "description": "Where a electric multiple unit is, how it got there and where it may go (varies).", "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.", "layers": [ { "id": "location-and-placement", "name": "Location and placement", "description": "Position, containment and the reference frame the position is given in.", "findings": [ { "id": "position-and-frame", "name": "Position, container and reference frame", "description": "Where a electric multiple unit is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a electric multiple unit, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "position-and-frame-q02", "text": "Who or what asserted this about the location of a electric multiple unit, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "position-and-frame-q03", "text": "What may an agent decide or do once the location of a electric multiple unit is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "movement-and-transfer", "name": "Movement and transfer", "description": "How a electric multiple unit is carried, installed or relocated.", "findings": [ { "id": "movement-events", "name": "Movement events and constraints", "description": "What counts as a movement, what records it and what limits it.", "questions": [ { "id": "movement-events-q01", "text": "What identifies and describes the movement of a electric multiple unit, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "movement-events-q02", "text": "Who or what asserted this about the movement of a electric multiple unit, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "movement-events-q03", "text": "What may an agent decide or do once the movement of a electric multiple unit 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 electric multiple unit 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 electric multiple unit between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a electric multiple unit, 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 electric multiple unit, 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 electric multiple unit 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 electric multiple unit, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a electric multiple unit 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 electric multiple unit, 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 electric multiple unit, 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 electric multiple unit is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "use-and-operation", "name": "Use and operation", "description": "What can be done with a electric multiple unit and what it takes to do it.", "rationale": "An agent that can recognise a thing but not act on it has only half a model.", "layers": [ { "id": "intended-use", "name": "Intended use and function", "description": "What a electric multiple unit is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a electric multiple unit performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a electric multiple unit, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "function-and-purpose-q02", "text": "Who or what asserted this about the use of a electric multiple unit, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "function-and-purpose-q03", "text": "What may an agent decide or do once the use of a electric multiple unit is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "handling-and-procedure", "name": "Handling and procedure", "description": "The steps, skills and tools involved in using a electric multiple unit.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a electric multiple unit at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a electric multiple unit, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "procedures-and-skills-q02", "text": "Who or what asserted this about handling a electric multiple unit, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "procedures-and-skills-q03", "text": "What may an agent decide or do once handling a electric multiple unit is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "definition-and-realisation", "name": "Definition, dimension and realisation", "description": "What electric multiple unit is defined as and how it is realised in practice.", "rationale": "A unit is not the quantity it measures, and its definition has a history that older data still depends on.", "layers": [ { "id": "definition", "name": "Definition and dimension", "description": "The defining relation and the quantity it measures.", "findings": [ { "id": "definition-record", "name": "Definition, body and date", "description": "What defines it now, and what defined it before.", "questions": [ { "id": "definition-record-q01", "text": "How is electric multiple unit defined, by which body, and since when?", "kind": "definition" }, { "id": "definition-record-q02", "text": "What was the previous definition, and what data still depends on it?", "kind": "provenance" } ] } ] }, { "id": "conversion", "name": "Conversion and compatibility", "description": "Relations to other units, exact or approximate.", "findings": [ { "id": "conversion-record", "name": "Conversions and their exactness", "description": "Factors, and whether each is exact by definition.", "questions": [ { "id": "conversion-record-q01", "text": "What conversions relate electric multiple unit to other units, and which are exact by definition?", "kind": "measurement" }, { "id": "conversion-record-q02", "text": "Where does rounding a conversion change a decision, and how should that be recorded?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a electric multiple unit 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 electric multiple unit and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a electric multiple unit, 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 electric multiple unit, 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 electric multiple unit 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 electric multiple unit is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a electric multiple unit, 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 electric multiple unit, 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 electric multiple unit is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 7, "layers": 15, "findings": 17, "questions": 49 } } } }