Model
OpenDeco reference exponential compartment fixture, 1.0.0
This record describes OpenDeco reference exponential compartment fixture, version 1.0.0, implemented as opendeco-adapters 1.0.0, in-process Python adapter 1.0.0 using configuration reference_exponential_compartment_fixture_v1 1.0.0. Any reported result applies to this exact implementation and configuration.
CautionEvery empirical value this model uses is synthetic
NoteThis adapter is a pipeline fixture
Identity
A family name does not identify the coefficients, the algorithm version, the ascent constraints, the gas handling or the software behaviour behind a number. OpenDeco records those layers separately, and a benchmark result attaches to the bottom of the stack, never to the name at the top.
- Family
- OpenDeco reference exponential compartment fixture
- Version
- 1.0.0
- Implementation
- opendeco-adapters 1.0.0, in-process Python adapter 1.0.0
- Configuration
- reference_exponential_compartment_fixture_v1 1.0.0
- Aliases
- Does not exist for this sourceThe adapter declares no alternative name.
- First publication
- Does not exist for this sourceNo public record is available for this field.
- Ownership
- OpenDeco
- Openness
- Open source implementation
- Model class basis
- Assigned from the adapter's declared family name. No model family record exists in the registry yet.
Source and lineage
It wraps no external implementation and transcribes no published parameter set.
No BIG292 lineage assessment has been recorded for this model version. The flag no known BIG292 training would say that somebody looked and found nothing, and it requires a named evidence basis that this record does not have.
- BIG292 lineage flag
- Unknown
- Lineage evidence basis
- Not yet obtainedNo search for a BIG292 development relationship has been run and recorded for this model version.
- Derived from
- Does not exist for this sourceThe model version derives from no parent model version, so no lineage flag is inherited.
- Performance class
- Unknown lineage
Implementation
OpenDeco can inspect and version the implementation used for this record.
This adapter claims agreement only to its declared tolerance, and the numerical method is a closed-form exponential uptake solution per segment, a supersaturation ratio limit inverted for the ceiling, and a fixed-step scan followed by bisection for the no-decompression limit.
- Implementation type
- Open source
- Adapter pattern
- In-process Python
- Adapter version
- 1.0.0
- Trust classification
- OpenDeco authored
- Determinism
- Deterministic within a declared tolerance
- Declared relative tolerance
- 1e-9
- Declared absolute tolerance
- 0.0012Pa
- Minimum ambient pressure
- 20,000Pa
- Maximum ambient pressure
- 1,200,000Pa
- Schedule generation
- Not supported
- Native probability output
- Does not exist for this sourceThe adapter produces no probability, so no risk metric may be computed from it.
- Licence
- Apache-2.0
- profile_replay
- ndl_generation
- ceiling
- tissue_state
- repetitive_state
- gas_switching
- altitude
- helium
| Evidence | Kind | What it checks |
|---|---|---|
| golden_corpus_v1 | golden_corpus | Committed outputs over the hand-auditable corpus pin adapter behaviour between commits. |
| closed_form_sanity_check | unit_test_suite | Per-segment uptake agrees with an independently written closed-form expression. |
| property_suite_v1 | property_test_suite | the verification protocol invariants hold under generated inputs. |
| state_round_trip_v1 | state_round_trip_test | Serialised state round-trips to an identical tissue state. |
| invalid_input_v1 | invalid_input_test | Malformed input raises typed adapter errors instead of returning a value. |
Configuration
The configuration carries three compartments with half-times and supersaturation ratio limits chosen for hand-auditability. The supersaturation limit is a plain ratio of absolute ambient pressure. It is not an M-value.
This adapter exists to keep the run pipeline honest between commits. Its golden outputs were accepted as a bootstrap baseline by an automated build and reviewed by no person, which the acceptance ledger records in those words.
- Configuration
- reference_exponential_compartment_fixture_v1
- Provenance class
- Synthetic
- Compartments
- 3
- Tracks helium
- Yes
- Golden corpus acceptance
- Bootstrap of an existing baseline, reviewed by no person
- Published source
- Does not exist for this sourceNo configuration value is taken from any published parameter table.
Known calibration data
No dataset was used to develop, calibrate or tune this model version, because no dataset was used at all.
The repository records no parameter source gap for this adapter, because it is a fixture and its configuration is never intended to carry a real parameter set.
Benchmark results
Not applicable at this stage
No released benchmark result is attached to this model record.
Sensitivity
Not applicable at this stage
No sensitivity analysis is attached to this model record.
Failure regions
Not applicable at this stage
No failure-region analysis is attached to this model record.
Limitations
- Compartment half-times and supersaturation ratio limits are configuration values chosen for hand-auditability. They are not taken from any published parameter table.
- The supersaturation limit is a plain ratio of absolute ambient pressure. It is not an M-value and carries no equivalence claim to any M-value formulation.
- The no-decompression limit assumes instantaneous direct ascent to the surfacing pressure and accounts for no ascent time.
- The no-decompression limit is resolved only to the declared search resolution, so a short excursion between two scan points goes undetected.
- Oxygen exposure, bubble dynamics, workload, temperature and subject covariates are not modelled and are ignored if supplied.
- Alveolar water vapour pressure is a required configuration value with no default, because published conventions differ and this adapter asserts none of them.
- The golden baseline for this adapter was accepted by an automated build and no person has reviewed it.
Reproducibility
The configuration digest below identifies the exact parameter values a run used, and a different digest means a different model.
They pin adapter behaviour between commits and they are not cited here as a result.
- Licence
- Apache-2.0
- Release identifier
- Not applicable at this stageNo OpenDeco release includes this implementation yet.
Verification level
- Level
- V1 Sanity checked
- What the level means
- Basic known profiles and invariants pass.
- Evidence records
- 5
Development-data lineage
- Flag
- Unknown
- Performance class
- Unknown lineage
Content addressing
- Configuration digest, SHA-256
- 72367ca1ee6d690101af31dcbf16b11cd1d0251f4384463d1b233fedd9664f09The canonical serialisation of the adapter configuration, as recorded in the golden acceptance ledger.
Elsewhere