Previous baseline run collapsed to ~random retrieval (R@1 0.6% at epoch 8,
train loss trending up 4.2 → 4.5). Hypothesis: at bs=8, DSS packs
visually-identical drones into a batch where InfoNCE asks the model to
discriminate them, and the hard-mining queue amplifies that hardness —
together they prevent convergence from a near-random start.
Override the new baseline config to run with the simpler regime:
sampler_type = "mutex" (disable DSS, keep only the no-false-negative guarantee)
hard_mining_k = 0 (use full queue as uniform negatives, no per-query top-K)
Fresh `out/gtauav/baseline_mutex` output dir so results stay separate from
the failed run's mixed logs.
Other architecture changes (shared DINOv3 WEB, MONA in last 12 blocks,
grad_accum=8) kept — verify they work with simple sampling before
layering DSS/mining back on.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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