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Harness-S: Learning from Sibling Harnesses for Generalizable Agent Training

Harness evolution from a common base exhibits Locality, Complementarity, and Nonstationarity: variants repair different failures, and their utility changes as the policy learns. Rather than seeking a

  • Upvotes30
#5Rank now –
#3Peak rank
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536Score · 7d
Nov 6, 2026First seen
Rank · 7 days

About this paper

A selective harness-rescue training method uses specialized sibling harnesses to replace failed reinforcement learning rollouts and transfer their benefits into a single policy that performs better under the original base harness.

Harness evolution from a common base exhibits Locality, Complementarity, and Nonstationarity: variants repair different failures, and their utility changes as the policy learns. Rather than seeking a universally superior harness, we introduce Harness-S to selectively rescue failures of a base execution system through sibling harnesses and transfer the resulting capabilities into a single policy that remains effective under the original harness. Directional Harness Evolution develops specialized sibling harnesses along distinct repair directions, forming a reusable Sibling Harness Pool that remains fixed during policy training. Complementary Harness Rescue Training invokes this pool only…

reinforcement learningpolicy trainingrolloutstrajectoriesLLMsAdaptive Harness RouterTop-k variantsHarness Behavior ProfilesPolicy-aware profile re-anchoringRank-1 inference
Upvotes
30
Authors
11
Published
Nov 3, 2026

Summary and abstract excerpt via Hugging Face Papers ↗ · arXiv.

Trending history

Harness-S: Learning from Sibling Harnesses for Generalizable Agent Training was first seen on Hugging Face · Daily papers on Nov 6, 2026. Since then it has appeared in 31 checks on 3 different days. Its best position was #3 of 30, reached on Nov 6, 21:28 UTC. It is #5 right now, holding steady at #5 over the last 6 checks.

Rank history

Position on Hugging Face · Daily papers at every check (lower is better).

#1#11#20#30 Nov 6Nov 6Nov 7Nov 8Nov 8 Nov 6, 07:28 UTC · #7Nov 6, 09:28 UTC · #6Nov 6, 11:28 UTC · #5Nov 6, 13:28 UTC · #5Nov 6, 15:28 UTC · #4Nov 6, 17:28 UTC · #4Nov 6, 19:28 UTC · #4Nov 6, 21:28 UTC · #3Nov 6, 23:28 UTC · #3Nov 7, 01:28 UTC · #3Nov 7, 03:28 UTC · #4Nov 7, 05:28 UTC · #4Nov 7, 07:28 UTC · #4Nov 7, 09:28 UTC · #4Nov 7, 11:28 UTC · #4Nov 7, 13:28 UTC · #4Nov 7, 15:28 UTC · #4Nov 7, 17:28 UTC · #4Nov 7, 19:28 UTC · #4Nov 7, 21:28 UTC · #5Nov 7, 23:28 UTC · #5Nov 8, 01:28 UTC · #5Nov 8, 03:28 UTC · #5Nov 8, 05:28 UTC · #5Nov 8, 07:28 UTC · #5Nov 8, 09:28 UTC · #5Nov 8, 11:28 UTC · #5Nov 8, 13:28 UTC · #5Nov 8, 15:28 UTC · #5Nov 8, 17:28 UTC · #5Nov 8, 19:28 UTC · #5

Last 14 days

Best rank per day (UTC).

Oct 26today

Metric history

▲ as reported by Hugging Face.

0224466 Nov 6Nov 6Nov 7Nov 8Nov 8 Nov 6, 07:28 UTC · 30Nov 6, 09:28 UTC · 39Nov 6, 11:28 UTC · 45Nov 6, 13:28 UTC · 47Nov 6, 15:28 UTC · 51Nov 6, 17:28 UTC · 51Nov 6, 19:28 UTC · 54Nov 6, 21:28 UTC · 54Nov 6, 23:28 UTC · 54Nov 7, 01:28 UTC · 54Nov 7, 03:28 UTC · 55Nov 7, 05:28 UTC · 55Nov 7, 07:28 UTC · 56Nov 7, 09:28 UTC · 58Nov 7, 11:28 UTC · 58Nov 7, 13:28 UTC · 59Nov 7, 15:28 UTC · 60Nov 7, 17:28 UTC · 60Nov 7, 19:28 UTC · 62Nov 7, 21:28 UTC · 63Nov 7, 23:28 UTC · 63Nov 8, 01:28 UTC · 63Nov 8, 03:28 UTC · 63Nov 8, 05:28 UTC · 64Nov 8, 07:28 UTC · 64Nov 8, 09:28 UTC · 64Nov 8, 11:28 UTC · 64Nov 8, 13:28 UTC · 66Nov 8, 15:28 UTC · 66Nov 8, 17:28 UTC · 66Nov 8, 19:28 UTC · 66

Questions

Is Harness-S: Learning from Sibling Harnesses for Generalizable Agent Training trending on HF Daily Papers right now?

Yes. As of Nov 8, 19:28 UTC it is #5, holding steady at #5 over the last 6 checks.

What is the highest rank Harness-S: Learning from Sibling Harnesses for Generalizable Agent Training reached?

#3 on Hugging Face · Daily papers, on Nov 6, 21:28 UTC. Trendoday checks this list every 120 minutes.

How long has Harness-S: Learning from Sibling Harnesses for Generalizable Agent Training been trending?

It was first seen on Nov 6, 2026 and has been on the list on 3 days (31 checks) since.