FPF Reference

    A.19.SOURCE-SET-SPACE-SUBSTRATE:11 - SoTA-Echoing

    Preface node heading:a-19-source-set-space-substrate-11-sota-echoing:24799

    What this page is

    This is generated FPF reference text from the specification preface or supporting sections. It helps interpret FPF; it is not FPF Reference product documentation.

    Methodology

    Use it to understand how the specification wants to be read, then return to a route, pattern, or work packet for active work. Cite generated IDs only when the wording changes the task decision.

    Content

    SoTA practicePrimary source(s)Practice demand disciplined herePractical safeguard boughtAdoption stance
    Modern multilevel evolutionary theory looks for one common substrate across several levels rather than forcing one tradition-local carrier to tell the whole story.Vanchurin (2026) on generally covariant evolutionary dynamics; Warrell et al. (2024) on unified multilevel evolutionary frameworks.SS-0, SS-2, CC-A19SS-1, CC-A19SS-2.Keeps one neutral substrate beside A.19, so one archive, front, or publication face cannot silently stand in for the whole substrate declaration load.Adapt. Keep one neutral substrate, but bind it to FPF declaration discipline.
    Contemporary QD practice distinguishes feature/behavior space, quality/objective side, archive/repertoire set results, and local competition rather than treating one vague "space" as enough.2026 QD review; IJCAI 2024 stepping-stone results; MOUR-QD (2025).SS-1, SS-3, CC-A19SS-3, CC-A19SS-4, worked slices 5.1 and 5.2.Forces search-side ref, outcome-side ref, and source-to-outcome relation to stay explicit, so downstream search/evaluation claims remain auditable.Adopt/Adapt. Adopt the split; adapt it to FPF declared-source-set discipline.
    Frontier QD and adjacent work increasingly use learned, adaptive, unstructured, and uncertainty-bearing spaces and qualifiers, so one heavy metric or transition stack should not be assumed everywhere.Uncertain Quality-Diversity (2023); Extract-QD (2025); later adaptive-space and meta-competition lines.SS-4, SS-5, CC-A19SS-5, CC-A19SS-6.Makes uncertainty posture explicit while keeping declared map ref, metric, transition, and bridge-loss pins optional unless the case truly depends on them.Adopt/Adapt. Adopt uncertainty honesty and optional heavier qualifiers; reject mandatory geometric monoculture.
    Atlas and manifold-qualifier lines are useful in some cases, but they are not the default meaning of every source-set/space-substrate line.UMAP 2024 review; 2024-2025 atlas and manifold-optimization lines.SS-5, SS-6, boundary anti-case 5.3, CC-A19SS-8.Preserves substrate semantics so later interpretive or atlas views can help interpretation without quietly becoming the ontology.Adapt. Keep atlas-form interpretation as a later specialization, not the substrate's ordinary center.

    Last Updated: 2026-06-17 — upstream FPF commit 646b0b9b (github.com/ailev/FPF)