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Review regressions before expanding the test." ], "measure": "Successful outcomes, response time, human rework, and total cost per successful task.", "decision": "Keep the change only if it meets your preselected quality and latency limits and improves the metric you care about after setup and operating costs. Otherwise retain the baseline. This is an exploration plan, not a validated recommendation." }, "builder_review": null, "arxiv_id": "2609.16170", "title": "Skeletal Prototypes on Iterative Nerve Expansions", "summary": "SPINE replaces point-set prototype reduction with per-class embedded 1-complexes built from class-conditional Mapper graphs, where edges and vertices both enter the nearest-complex decision rule. Cost is construction overhead comparable to discriminative prototype methods, with a vertex-fitting phase under a classification objective; no GPU or large infrastructure is required. 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