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Library / First Principles Framework (FPF) - Core Conceptual Specification
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F.0.1:5.2.3 - observation and service metric
  • Worked result — W3C SOSA/SSN Recommendation (19 October 2017), §4.3.2.2, sosa:Observation. Observation denotes the act of carrying out a procedure to estimate or calculate a value of a property of a feature of interest.
  • Recognition cue — ITIL 4. If service-level metric is used for a quantity that evaluates a service-level objective, identify the exact ITIL 4 publication, edition, and passage before using that reading.

The verified SOSA reading alone establishes no service-metric relation. Once the second reading is source-backed, a named use may ask whether the observation supplies evidence for that metric; that is a subject relation, not lexical identity or same-row membership.