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The λ sweep is the strongest single piece of two-mode separation
evidence and doesn't require the early-epoch caveat. New §5.4 with
table showing:
λ=0: vanilla, both modes broken
λ=1e-4: mode 1 ALLEVIATED (||h_L||=2.4e4, ||g||=6.3e-7), mode 2 NOT
(cos -0.022, rho -0.004)
λ=1e-2: mode 1 alleviated, mode 2 partially (cos +0.16, rho +0.09)
λ=1e-1: slightly over-constrained (cos +0.13, rho +0.07)
The two modes have different intervention thresholds. §5.4 is now the
killer evidence; the early-epoch disambiguation in §5.3 becomes
supporting. Updated section summary to 'five validations'.
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Title: 'Beyond Accuracy and Alignment: A Diagnostic Evaluation Protocol
for Feedback Alignment'
Structure (per round 21 prescription):
Abstract: 'broken because conflated' framing, 2 distinct modes named
§1 Introduction: discovery hook -> 2-mode framing -> contribution
§2 Related work
§3 Audit (the field-standard pair walks back nothing)
§4 The diagnostic protocol (4 diagnostics, calibrated thresholds,
decision-utility ablation, cross-architecture validation)
§5 Two distinct failure modes (mechanism, penalty rescue, direct
cosine measurement, hypothesis-disambiguation, capacity-cost control)
§6 Limitations
§7 Broader impacts
§8 Conclusion
Appendices: reproducibility, 7-pitfalls catalog, walk-back chain (4 step),
all 6 validations of the two-mode separation
Includes 4 result tables, ~10 references, structured as eandd track
double-blind submission. 760 lines of LaTeX, balanced environments
verified. Ready for compilation on a system with pdflatex.
Template: paper/neurips_2026.{sty,tex}, downloaded from official
NeurIPS 2026 source. checklist.tex also unzipped.
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