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Library / First Principles Framework (FPF) - Core Conceptual Specification
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C.16.Q:4.5 - Normal-form discipline

A QualitySense SHALL declare one admissible default evaluative normal form and MAY declare additional admissible evaluative normal forms explicitly.

The normal forms in this section are endpoint or evaluative forms. They are not publication forms by themselves. Publication face, publication form, publication unit, carrier, rendering, export, and front-end questions remain with E.17, E.8, or the applicable endpoint-publication pattern.

QNF-1 - SignalPack. Use for QS.PhenomenalCharacter, QS.PreconceptualFit, and many cases of QS.LatentFit.

A conforming SignalPack contains:

  • exemplar or contrast set or probe set,
  • articulation notes,
  • source episode, carrier, and observer,
  • optional ordinal or thresholded summaries,
  • explicit warning that the signal is not yet a Characteristic unless an admissible proxy is later declared.

QNF-2 - Characteristic. Use only when the sense is truly one measurable characteristic on one declared scale. This uses A.17, A.18, and C.16 and inherits full scale legality.

QNF-3 - Bundle. Use when the sense is composite. Typical for QS.ExplanatoryMerit, many engineering quality families, and QS.ControlAdequacy.

A conforming bundle contains:

  • member heads,
  • whether each head is Characteristic, status, mechanism, scope, or test,
  • aggregation policy if any,
  • prohibition on hidden scalarisation.

Engineering note. For engineering -ility families, the preferred bundle endpoint is Q-Bundle (C.25), because it keeps Measures[CHR] distinct from ClaimScope and WorkScope and from Mechanisms and Status. Q-Bundle is a C.25-governed bundle endpoint rather than a fifth normal form beside SignalPack | Characteristic | Bundle | Objective. Do not use a free-floating bundle with hidden metric semantics.

QNF-4 - Objective. Use for QS.UseValue in selection, generation, or search contexts.

A conforming objective contains:

  • CG-frame or objective endpoint source reference,
  • admissible comparators,
  • acceptance or selector policy,
  • reference plane and window,
  • relation to novelty, diversity, and constraints.