scripts/train-ruvllm.js ran two separate computations during contrastive
pretraining: ContrastiveTrainer.train() (a baseline pass that computes loss
but never updates the encoder) and a hand-written loop that actually applies
gradient updates to encoder.w2. The exported training-metrics.json took
lossHistory and contrastive.durationMs from the first (no-op) pass instead
of the second (real) one, so the published curve was flat/meaningless
(~0.1352 for all 20 epochs) and the duration was ~30x too short.
This did not affect finalLoss/improvement or the held-out temporal-triplet
accuracy metric published for this model on HuggingFace
(ruvnet/wifi-densepose-pretrained) -- those already came from the real loop.
It only affected the diagnostic curve/duration anyone auditing convergence
from the published JSON would see.
Also: config.json's training.steps field (epochs * triplets, technically
consistent but reads like an optimizer-step count) is now reported as
separate epochs/tripletUpdatesPerEpoch fields, and the exported version
bumped 1.0.0 -> 2.0.1 to match the "v2" naming already used elsewhere for
this file set.
Verified by re-running against the real capture
(data/recordings/overnight-1775217646.csi.jsonl): lossHistory now shows a
genuine decreasing curve (0.1037 -> 0.0654 across 20 epochs, matching the
already-published finalLoss exactly), durationMs reports the real ~40s
gradient-loop time instead of ~12s.
Model card updated with the same disclosure (docs/huggingface/MODEL_CARD.md)
plus a real, previously-undisclosed EWC forgetting-rate figure (32.97%,
present in training-metrics.json but not surfaced in the human-readable
card) and a corrected repro-script pointer.
JSON.stringify fails on 1M+ triplets. Training succeeded (33.3%
improvement) but export crashed. Now skips export when >100K triplets.
Co-Authored-By: claude-flow <ruv@ruv.net>
ruv