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authorYurenHao0426 <Blackhao0426@gmail.com>2026-07-29 20:42:34 -0500
committerYurenHao0426 <Blackhao0426@gmail.com>2026-07-29 20:42:34 -0500
commit47ab7f9777852b5fd70e0dad90557057a3f42c13 (patch)
tree2210b89046b1a4e8118212397eaef8c38ff450d4
parentf8f778255c4327ac564e11d141439a1d9433e7a3 (diff)
Suspend positive scaling claims; state the negative result and the pre-registered protocol (user doctrine)
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn
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@@ -252,8 +252,8 @@
<thead><tr><th>Model</th><th>Data</th><th>EP (val CE)</th><th>BP twin</th><th>Gap</th></tr></thead>
<tbody>
<tr><td>72M transformer LM</td><td>FineWeb-Edu, 1.4B tok</td><td>3.33</td><td>3.29</td><td>+4-5% ppl</td></tr>
- <tr><td>135M transformer LM</td><td>FineWeb-Edu, 2.7B tok</td><td colspan="3">trained end-to-end, zero instability
- events; scaling analysis below</td></tr>
+ <tr><td>135M transformer LM</td><td>FineWeb-Edu, 2.7B tok</td><td colspan="3">trains stably end to end; the frozen
+ 72M recipe does not transfer (gap grows to roughly 30% ppl). See the scaling note below.</td></tr>
</tbody>
</table>
<p class="is-size-6 has-text-grey">Twin discipline: identical architecture, tokenizer, data order,
@@ -276,16 +276,18 @@
<div class="container is-max-desktop">
<div class="columns is-centered">
<div class="column is-four-fifths">
- <h2 class="title is-3">The scaling science</h2>
+ <h2 class="title is-3">The scaling note</h2>
<div class="content has-text-justified">
- <p>Scaling a physical learning rule surfaces phenomena backprop never meets. Between widths 512 and 768
- we identified a width-scaling loss in the EP gradient: localized to the top half of the network,
- invisible to every per-step alignment metric, and traced to response components that finite nudge
- displacement under-reaches. We built a screening instrument that measures this leak in 90 minutes per
- candidate recipe, mapped its dose-response law (logarithmic across two decades of displacement
- amplification), and demonstrated a pure estimator-side treatment that closes 97% of it: no change to
- the model, its inference path, or the cost budget. The same instruments provide the go/no-go protocol
- for each next rung of the ladder.</p>
+ <p>Scaling the frozen 72M recipe one width step (512 to 768) fails: the EP to BP gap grows from
+ 4-5% to roughly 30% perplexity. We treat this as the central result of the current phase and the
+ central research object. It has sharp structure: the loss is fully localized to the top half of the
+ network, is invisible to every per-step alignment metric, is untouched by estimator symmetrization,
+ precision, relaxation depth, and output-head interventions, and is removed completely by
+ substituting true gradients in the top half. A mechanism-identification campaign across four widths
+ is in progress, with a pre-registered transfer law and a blind holdout at the next width. Positive
+ scaling claims are suspended until the law predicts an unseen width with zero tuning.</p>
+ </div>
+ <div class="content" style="display:none">
</div>
<h2 class="title is-3">Hardware line</h2>
<div class="content">
@@ -301,11 +303,12 @@
</div>
<h2 class="title is-3">Roadmap</h2>
<div class="content has-text-justified">
- <p>Staged scaling with matched BP controls and hardware-relevant ablations at every rung: a 150M-600M
- ladder (the gap is measured against a backprop twin at every rung), then 1B-3B; each stage
- gated on the previous stage&rsquo;s loss, alignment, and throughput numbers. In parallel: the
- algorithm&rarr;regime map across the activity-difference family (contrastive / coupled-learning arms on
- the same harness), and a bounded single-column hardware feasibility study.</p>
+ <p>Mechanism first: identify the width-scaling term across four measured widths, freeze a transfer
+ law with its thresholds and budgets, then validate blind at 270M with from-scratch runs and two
+ seeds. The scaling ladder resumes only on a zero-tuning hit at the holdout width. In parallel: the
+ algorithm-to-regime map across the activity-difference family, and a bounded single-column hardware
+ feasibility study.</p>
+ </div>
</div>
</div>
</div>