quantity uncertainty

• CURIE: gmeow:quantityUncertainty
• IRI: https://blackcatinformatics.ca/gmeow/quantityUncertainty
• Category: property
• Defined by: gmeow:slices/observations
• Box roles: RBox role (What is this?)

The uncertainty (e.g. ±1 sigma) of a scalar quantity, in the same unit as the quantity value.

Structure

Property shape: datatype property; gmeow:ScalarQuantity -> xsd:decimal; functional

Practical Pattern

Use gmeow:quantityUncertainty from gmeow:ScalarQuantity to xsd:decimal when the relationship itself belongs in the native GMEOW graph.

Example Snippets

These snippets are generated from canonical slice examples and trimmed to the Turtle blocks where this term appears.

Temperature Reading

• Source: slices/core/observations/examples/temperature-reading.ttl
• Examples catalog: open in catalog#example-slices-core-observations-examples-temperature-reading

# --- The result wrapper: value + unit + uncertainty, not a bare literal.
ex:temp a gmeow:ScalarQuantity ;
    gmeow:quantityValue       "22.5"^^xsd:decimal ;
    gmeow:quantityUncertainty "0.1"^^xsd:decimal ;
    gmeow:hasUnit             <http://qudt.org/vocab/unit/DEG_C> .

Common Companion Terms

gmeow:ScalarQuantity

External Equivalences

Equivalent or closely aligned targets: qudt

Linkages

Generated from the canonical mapping DSL. SSSOM files are the generated public interchange form for term equivalences.

Term Equivalences

Usage Advice

Use when

• Use to record the EPISTEMIC spread of a scalar reading — a ±1σ or tolerance figure, expressed in the same unit as gmeow:quantityValue.

Avoid when

• Avoid conflating it with ontic determinacy (gmeow:hasDeterminacy — whether the value is crisp, vague, fuzzy) or with resolution (gmeow:hasGranularity); uncertainty is how-sure, an axis distinct from those (Principle 9).

How to use

• State the spread in the quantity's own unit alongside gmeow:quantityValue; leave the fuzzy/probabilistic arithmetic and confidence intervals to the solver layer (P12), and carry the ontic model separately on gmeow:hasDeterminacy.

Examples

• ex:temp22 gmeow:quantityUncertainty 0.3.