[KongchangAI]
Unverified50% confidenceFactExact time

After preference alignment on Qwen3.5-4B using length-normalized DPO plus an SFT retention term (the RPO objective), the performance change on the structured extraction task was -0.55 percentage points, passing the TOST equivalence test within the ±5 percentage point equivalence interval.

1
Sources
50%
Confidence
Long-term
Relevance
11/5/2026
First Seen

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