external_baselines/frameskip_adapted/README.md

FrameSkip-adapted (+500)

This directory reproduces the Florence-Bridge FrameSkip comparison used by this release. It starts from the same complete 20K state as the OPTR arms and runs 500 additional optimizer updates with the same two-GPU global-batch-64 contract.

The scorer uses the official FrameSkip implementation vendored under third_party/frameskip/ at upstream commit 965becf63e9cd5cc339fbf7fde40d1db47efa67a. Bridge does not have a released GMM TPI cache, so this comparison is named FrameSkip-adapted (Gaussian-TPI fallback). The fixed settings are retention ratio 0.2, AVI/VAC/TPI weights 0.6/0.2/0.2, VAC enabled, first/last and gripper-transition preservation, top-10% action-change preservation, and five pruned microbatches followed by one full microbatch. No p/q correction is applied because FrameSkip remaps physical timesteps rather than sampling from OPTR's q(t|e).

Prepare DINOv2-S/14 separately, build the required-draw list and cache with build_required_draws.py, build_cache_shard.py, and finalize_cache.py, then:

scripts/run_frameskip_plus500.sh frameskip-plus500 /path/to/frameskip-cache.json

The cache and visual weights are runtime assets and are intentionally not stored in Git. Evaluation uses the same scripts/evaluate_bridge_384_no_video.sh entry as Uniform, Matched-Random, and Residual-OPTR.