jspace-nanogpt.git, branch main J-space on nanoGPT: Jacobian Lens replication & critique. J-lens norms anti-correlate with token frequency (r ~ -0.61 to -0.69); frequency-matched synthetic pair + causal loss-reweighting tests. http://git.jayrup.me/c/jspace-nanogpt.git/atom?h=main 2026-08-07T13:32:21Z Blog: clarify J-lens frequency findings 2026-08-07T13:32:21Z CaptainJack2491 jayrupnakawala@gmail.com 2026-08-07T13:32:21Z urn:sha1:34d5e8c4bbad4abb236dcaeb32050bf8c2bdbcf0 Visualize J-lens frequency findings 2026-08-07T13:32:21Z CaptainJack2491 jayrupnakawala@gmail.com 2026-08-07T13:32:21Z urn:sha1:c4e0a4edf312bcb8a5b9d5de9ec0773c8d3157c6 at-scale W_U row-norm check (GPT-2): geometric confound generalizes, r(log10)≈-0.45/-0.49; blog draft: drop 'Actually', log-freq lead, probe transparency, norm-vs-readout concession 2026-08-05T16:10:54Z Void Agent void@jayrup.hermes 2026-08-05T16:10:54Z urn:sha1:65e03aff79fc2b1b78a500153d14c5532c4ef78f Short version: clean-boundary control is resolved (~1.3x), not pending 2026-08-02T15:48:28Z Void Agent void@jayrup.hermes 2026-08-02T15:48:28Z urn:sha1:638754554bc3852bfd12115486a35b550b4f610c Polish per review: results.md GPT-2 -0.18 demoted to do-not-cite footnote; blog section 10 adds W_U-at-init scale prediction (one-line GPT-2 unembedding check) 2026-08-02T15:46:43Z Void Agent void@jayrup.hermes 2026-08-02T15:46:43Z urn:sha1:7ca6d8bcfd0db4feb89456100ccf766d02d5f258 Blog revision per reviewer feedback: de-emphasize reviewer name-drops, promote LN technical note, willkn as Related-work, table footnote, section 8 power reframe (~13 seeds/arm needed); add W_U-at-init finding (learned geometry, r~0 at init vs -0.61 trained) 2026-08-02T15:43:21Z Void Agent void@jayrup.hermes 2026-08-02T15:43:21Z urn:sha1:b1c232ebc00eaa115a1009d9a9f477721777ffe8 Clean-boundary synthetic-pair control: ratio 1.311 (CI [1.258,1.402]) vs 1.471 — corruption inflated by ~12%, structure signal survives at 0% word-slicing; blog section 7 + results.md resolved 2026-08-02T15:15:00Z Void Agent void@jayrup.hermes 2026-08-02T15:15:00Z urn:sha1:c201b8331c87294911eb3d5d07627cae8429cb5d Blog (Claude's review): add 'short version' TL;DR up top for wider audience; promote W_U decomposition to its own flagged subsection as the novel mechanistic contribution 2026-08-02T15:10:17Z Void Agent void@jayrup.hermes 2026-08-02T15:10:17Z urn:sha1:503a192dd39bd27c3853d6850140a526808b223a Blog: fill in public repo URL (git.jayrup.me/c/jspace-nanogpt.git) 2026-08-02T15:08:17Z Void Agent void@jayrup.hermes 2026-08-02T15:08:17Z urn:sha1:0d98c4cd9ca7aa974aa60e6f9c4b8e9a1507b628 Robustness confirmed: freq correlation identical under Anthropic's exact estimator (skip16+source_mean), max delta 0.008 all layers 2026-08-02T14:37:01Z Void Agent void@jayrup.hermes 2026-08-02T14:37:01Z urn:sha1:e1d881c5651022e2eea5e1ad8e9bf5f6ae688fac