skeleton
Enable an AI agent to recognise skeleton as a sledding activity, assess a participant's readiness and run state, and identify which participation, training or competition actions are permitted.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
Researched by: Codex
Purpose and description
Enable an AI agent to recognise skeleton as a sledding activity, assess a participant's readiness and run state, and identify which participation, training or competition actions are permitted.
It can be Classify an observed activity as a skeleton descent, a related exercise or an unresolved case.; Associate a participant, sled, track configuration and release decision with an attempt.; Record transitions through push, loading, descent, finish and stopping phases.; Compare start, split and finish performance between sufficiently comparable runs.; Flag missing eligibility evidence, unresolved equipment checks or absent track release for authorised review.; Trace an accepted, interrupted or invalidated result to timing evidence and the applicable decision..
Distinguishing features
The rider descends prone and head-first, distinguishing the activity from feet-first, supine luge.
The rider is supported on a sled rather than seated inside a bobsleigh.
The descent involves one rider per sled rather than a crew sharing a vehicle.
A skeleton training exercise may isolate the push start or another phase; its relationship to skeleton must be recorded rather than assuming every exercise is a complete descent.
Scope
+ Defining riding posture, sled use and descent format
+ Participant, sled and track relationships for a particular run
+ Start, descent, finish and interruption states
+ Timing, trajectory observations and comparable performance
+ Run eligibility, track release and competition adjudication
- Anatomical skeletons and skeletal health
- Sled manufacturing, component engineering and maintenance procedures
- Ice-track construction and facility operations
- Athlete medical diagnosis and treatment
- Whole-event scheduling, commercial management and federation governance
Characteristics
- Activity format
- competition run | training descent | start practice | other declared exercise Determines which run phases, timing evidence and permissions are relevant.
- Riding orientation
- prone and head-first | transitional | other | unobserved Supports recognition of the discipline while allowing the start and loading phases to differ from descent posture.
- Participant-sled assignment
- identified participant linked to the sled used for the attempt Connects eligibility, equipment checks and results to the actual rider and sled.
- Track and start configuration
- track identity, start position, finish position and configuration reference Establishes the route attempted and whether times can meaningfully be compared.
- Run phase
- awaiting release | push start | loading | descent | finish crossed | stopping | concluded | interrupted Distinguishes readiness to start, timed completion and completion of the stopping phase.
- Elapsed and split times
- seconds, with timing points, timing method and precision Measures performance and locates differences between attempts.
- Track-condition context
- time-stamped condition report associated with the run Provides context for interpreting readiness and performance differences.
- Run disposition
- pending | accepted | under review | invalid | did not start | did not finish, mapped to applicable rules Separates an observed attempt from a result accepted for competition purposes.
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.skeleton
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 10 layers · 10 findings · 20 questions.
Discipline and attempt boundary Identifies skeleton and distinguishes full descents from exercises that reproduce only part of the activity.
Head-first sled descent is the central recognition test, but skeleton participation also includes practice that lacks a complete run.
Descent identity
Records the observable riding arrangement that identifies the discipline.
Rider posture and sled arrangement
The model must distinguish the descent posture and rider arrangement from luge, bobsleigh and incidental sled use.
- During descent, is one rider supported prone and head-first on the sled? definition
- What observation or activity designation distinguishes this attempt from another sledding discipline? boundary
Exercise extent
Defines which portions of skeleton an attempt actually includes.
Full run or isolated phase
An attempt needs an explicit extent so that start practice is not evaluated as an unfinished descent.
- Is the attempt a full descent, a shortened training descent or an isolated push-start exercise? definition
- Which start location, finish location and intended phases bound this attempt? boundary
Rider, sled and track readiness Connects the participant and equipment to the intended descent and its release conditions.
A skeleton run depends on a particular rider-sled combination being admitted to a particular track configuration.
Rider-sled admission
Records the evidence used to admit the participant and sled to the session.
Assigned rider and checked sled
Readiness must refer to the rider and sled actually used, with checks interpreted under the applicable session requirements.
- Which participant and sled are assigned to this attempt, and which participation or equipment checks apply? definition
- Who recorded those checks, when, and what unresolved condition affects admission? provenance
Track release
Captures permission to enter the intended descent route.
Release for selected start
Being ready at the start and being authorised to launch are separate states that require track-specific evidence.
- Which track configuration and start position are available to this participant for this attempt? boundary
- Has the responsible track authority released this attempt, or must it remain on hold? action
Push, loading and descent Represents execution from the initial push through travel along the track.
Skeleton performance and incomplete attempts must be interpreted through the transition from running with the sled to riding it.
Push and loading
Separates acceleration at the start from the transition onto the sled.
Start-phase execution
The model must record whether the push and loading occurred and which observations or measurements describe them.
- Did the attempt progress from the push into a loaded descent, and where did that transition occur? measurement
- Which timing points or observations describe the push and loading without conflating them with the whole run? measurement
Track traversal
Locates descent observations along identifiable track sections.
Line and contact observations
Trajectory deviations, contacts and riding interruptions need location and evidence rather than unsupported explanations of rider technique.
- At which track sections were line deviations, wall contacts or loss of riding position observed? measurement
- Which video, sensor record or observer report supports each observation, and which causal interpretations remain uncertain? provenance
Timing and performance comparison Makes run measurements interpretable and comparisons defensible.
A finish time alone cannot distinguish start performance, section losses or changes in track configuration and conditions.
Timing coverage
Defines what each recorded time measures.
Timing points and integrity
Elapsed and split times require known boundaries, units and evidence of timing validity.
- Which start, split and finish points bound each recorded time? measurement
- What timing system produced the values, and are any readings missing, disputed or corrected? provenance
Run comparability
Determines which performance comparisons the available context supports.
Comparable descent context
Comparison must account for route, timing boundaries, equipment assignment and recorded track conditions.
- Do the compared attempts share track configuration, start position and timing boundaries? boundary
- What differences in sled assignment or recorded conditions limit attributing a time change to the participant? boundary
Completion and result authority Separates finishing the timed route, concluding the physical attempt and accepting a sporting result.
Crossing the finish does not by itself establish that stopping is complete or that a competition result has been accepted.
Finish and stopping
Tracks the end of timed descent and the subsequent conclusion of the attempt.
Physical attempt outcome
The model must distinguish finish crossing, stopping and interruption using available observations.
- Did the rider cross the designated finish, and is completion of the stopping phase confirmed? measurement
- If the attempt was interrupted, what phase and location were reached, and what response was requested by responsible personnel? action
Sporting result disposition
Connects result acceptance and any further attempt to governing decisions.
Accepted or disputed result
A measured time becomes a competition result only through the applicable rules and adjudication process.
- Which rule set and official decision establish whether this attempt counts and how it contributes to the event result? provenance
- Is a review or another attempt permitted, and which authority must decide? action
What the second pass must settle
- Does registry entry vr.tr.skeleton-q186190 denote the sledding sport as assumed here, and does an existing Vercy world model already own that concept?
- Which authoritative discipline definitions and rule sets should anchor the model across competition levels and training contexts?
- Where should the boundary fall between skeleton itself, push-start practice, shortened descents and adapted participation formats?
- Which rider, equipment and track-release requirements vary by venue or governing body, and what evidence establishes that each has been satisfied?
- Which trajectory observations and track-condition measurements support reliable performance comparisons, and which interpretations must remain tentative?