ATOM (atom-ai): code snapshot (100fae0 + batched-train), README with measured numbers, curated checkpoints
9f1076a verified | # DRIVE_PROBE — token drive collinearity | |
| Date: 2026-09-17 PT | |
| Probe: inject `"Bonjour"` vs `"xxxxxx"` from zero field; measure alpha RMS + cosine. | |
| Model: AtomNativeModel d_model=32, n_modes=32, seed=0. | |
| ## Hypothesis (verified in `src/toroidal/dynamics.py` before patch) | |
| | Claim | Verified | | |
| |-------|----------| | |
| | `mode_phase` regular polygon `arange * 2π/n_modes` | yes | | |
| | token drive mean-broadcast identical on all modes | yes (pre-patch) | | |
| | `rotated = sin(phase) * alpha` | yes | | |
| | `_compute_phase_laplacian` exists but unused; linear Laplacian used | yes | | |
| ## Before (pre-patch numbers only) | |
| ``` | |
| RMS_Bonjour=0.00242920 | |
| RMS_xxxxxx=0.00243263 | |
| COSINE=0.97792614 | |
| ``` | |
| ## Patch choice: **A** (mode-modulated drive) | |
| `drive_m,d = token_d * cos(mode_phase_m + 0.5 * token_d * d)` — not the same | |
| vector on every mode. Same tensor shapes. No new module. Choice B (phase | |
| Laplacian) not applied. | |
| ## After | |
| ``` | |
| RMS_Bonjour=0.00178140 | |
| RMS_xxxxxx=0.00177089 | |
| COSINE=0.95857894 | |
| ``` | |
| Cosine dropped (0.9779 → 0.9586). RMS did not explode. | |
| ## energy_decay clamp | |
| Train path calls `model.stabilize_dynamics_parameters()` after every | |
| `optimizer.step()` (`tools/run_atom_native.py`); band default `[0.3, 0.95]`. | |
| Already correct — no further clamp fix. See `DECAY_FIX.md`. | |
| ## Train path note | |
| `tools/run_atom_native.py` supports `--stream`, `--resume`, `--atom-flush-every` | |
| (soft atom list clear; field alpha not wiped), `--no-episode-reset` default. | |
| No long train started for this probe. | |