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coverage: fpo-policy's square cells from E37 - #19

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tactino merged 1 commit into
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figure/square-e37
Sep 28, 2026
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tactino merged 1 commit into
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figure/square-e37

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@tactino tactino commented Sep 28, 2026

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This moves fpo-policy's two square cells onto E37 (PlugRL/plugrl-server#89, figure #90). Merge after those.

  • fpo-dppo-square becomes learns: from a behaviour-cloned start, success went from 0.37–0.41 to 0.78–0.80.
  • fpo-fpo-square stays runs: from 0.52–0.55 it falls to 0.26–0.39, and that fall is our FPO's defect, still being traced.
  • The two clips come from E37's final checkpoints. coverage.json and coverage-grid.jpg are regenerated.

There are no text or code changes.

plugrl-server E37 fine-tuned a behaviour-cloned fpo-policy on square. Under
DPPO it learns: success went from 0.37-0.41 to 0.78-0.80 on 3 of 3 seeds, so
that cell turns green. Under our FPO it falls, from 0.52-0.55 to 0.26-0.39.
That cell stays "runs", and its note says the fall is our defect, which we
are still tracing. Both clips now come from E37's final checkpoints.
coverage.json and the grid still are regenerated.
@tactino
tactino merged commit e3e2620 into main Sep 28, 2026
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tactino deleted the figure/square-e37 branch September 28, 2026 19:24
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