{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.state-q3505845","code":"thing-q3505845","url":"https://ver.cy/models/thing/q3505845/","name":"state","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.5","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.STA"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The condition of an object or system at a given time, described by the values of a set of variables that characterise it, such as a physical state, a machine's operating state or the state of a software object.","purpose":"Let an agent describe the state of anything by its variables, their values, the time of observation and the transitions between states.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["A state is a snapshot of variable values; a process is change over time.","The same object can be described by different state variables in different models.","Equilibrium means unchanged under given conditions; stability concerns behaviour under small perturbations."],"structure":{"bundles":[{"id":"definition","name":"Definition","description":"What defines a state.","layers":[{"id":"state-variables","name":"State variables","description":"Variables chosen.","findings":[{"id":"variables","name":"Variables","description":"Variables, their domains and units, admissible combinations and the state space; which values stay invariant and for how long.","questions":[{"text":"Which variables define the state here?","kind":"definition"},{"text":"Are they sufficient to predict behaviour?","kind":"boundary"}]}]},{"id":"domain","name":"Domain","description":"Physics, computing, devices.","findings":[{"id":"domain","name":"Domain","description":"Field and model.","questions":[{"text":"In which field and model is the state defined?","kind":"definition"},{"text":"Which theory gives the variables?","kind":"provenance"}]}]}]},{"id":"observation","name":"Observation","description":"Knowing the current state.","layers":[{"id":"measurement","name":"Measurement","description":"How values are obtained.","findings":[{"id":"observed-values","name":"Observed values","description":"Values, time and source.","questions":[{"text":"What are the current values, and when were they observed?","kind":"measurement"},{"text":"Which sensor or source reported them?","kind":"provenance"}]}]},{"id":"uncertainty","name":"Uncertainty","description":"Confidence in the state.","findings":[{"id":"uncertainty","name":"Uncertainty","description":"Accuracy and staleness.","questions":[{"text":"How certain and how recent is the state?","kind":"measurement"},{"text":"Could it have changed since?","kind":"boundary"}]}]}]},{"id":"transitions","name":"Transitions","description":"How states change.","layers":[{"id":"events","name":"Events","description":"Triggers of change.","findings":[{"id":"transition","name":"Transition","description":"From, to and trigger.","questions":[{"text":"Which event moves the system to another state?","kind":"definition"},{"text":"Which transitions are allowed?","kind":"boundary"}]}]},{"id":"stability","name":"Stability","description":"Stable and unstable states.","findings":[{"id":"stability","name":"Stability","description":"Equilibrium and persistence.","questions":[{"text":"Is the state stable?","kind":"boundary"},{"text":"What would disturb it?","kind":"definition"}]}]}]},{"id":"representation","name":"Representation","description":"Recording states.","layers":[{"id":"models","name":"Models","description":"State machines and diagrams.","findings":[{"id":"state-model","name":"State model","description":"Formal model used.","questions":[{"text":"Which formal model represents the states?","kind":"provenance"},{"text":"Is it complete?","kind":"boundary"}]}]},{"id":"data-exchange","name":"Data exchange","description":"Sharing state between systems.","findings":[{"id":"exchange-format","name":"Exchange format","description":"Format and semantics.","questions":[{"text":"How is the state shared with other systems?","kind":"provenance"},{"text":"Do both sides define it the same way?","kind":"boundary"}]}]}]}]},"agentConduct":{"may":["describe and record states with timestamps","explain state models"],"mustNot":["report a state without the time it was observed","change the state of real systems without authority"],"requiresHuman":["changes to the state of safety-critical systems"]},"ethics":{"considerations":["accuracy of reported status"],"affectedParties":["users of monitored systems"]},"owners":{"steward":"no universal owner; identify the custodian and rights for each state record","roles":[],"masterSystems":["monitoring and control systems"]},"relations":[{"target":"Q483247","type":"parent","note":"registry parent class"},{"target":"Q937228","type":"parent","note":"registry parent class"},{"target":"state variable","type":"related","note":"variables that define it"},{"target":"state transition","type":"related","note":"discrete events or continuous evolution"},{"target":"process","type":"related","note":"change over time"},{"target":"state machine","type":"related","note":"formal model"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.state-q3505845","Wikidata: Q3505845 (https://www.wikidata.org/wiki/Q3505845)"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"optional","items":["Shown as values of variables, status indicators or diagrams of states"]},"capabilities":{"applicability":"required","items":["list the variables that define a system's state","record a state with its timestamp and source","describe transitions between states","explain related concepts such as state machines"]},"hazards":{"applicability":"required","items":["Stale state data used as if current","Incompatible state definitions between systems"]},"interfaces":{"applicability":"required","items":["OMG Unified Modeling Language (UML) state machine diagrams"]},"context":{"applicability":"required","items":["Describing and predicting how systems behave and change over time.","physical state","thermodynamic state","quantum state","state of a finite-state machine","operating state of a device","state of matter"]}},"sources":[{"title":"Q3505845","url":"https://www.wikidata.org/wiki/Q3505845","note":"identity of the registry item, labels and sitelinks"},{"title":"Unified Modeling Language, Version 2.5.1","url":"https://www.omg.org/spec/UML/2.5.1/PDF","note":"state machines"},{"title":"State","url":"https://xlinux.nist.gov/dads/HTML/state.html","note":"state in computing"},{"title":"Lectures on Dynamic Systems and Control","url":"https://ocw.mit.edu/courses/6-241j-dynamic-systems-and-control-spring-2011/996025f6db0d90b00f11c44fc49b85f9_MIT6_241JS11_textbook.pdf","note":"state in dynamical systems"}],"openQuestions":["Should states of matter and quantum states link here as kinds or be separate entries only?"],"resources":{"spec":"/models/things/publications/thing-q3505845/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q3505845/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-10-21T19:34:53Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-21T19:40:20+00:00: completeness 1.00; sense: Wikidata description; 4 live sources; review by codex: pass","interaction.properties":"An abstract concept has no physical properties."},"score":1.0}}