C005 — Assessment¶


Research	R0055 — RLHF Yes-Men Claims
Run	2026-04-01
Claim	C005

BLUF¶

Correct with attribution caveat. Khan et al. (IEEE BigData 2024) achieved 85% reduction in persona-based tests and 84% in preference-driven tests using DPO with curated anti-sycophancy preference pairs. The method uses DPO rather than RLHF, so 'without changing the RLHF algorithm' is accurate in spirit — the intervention is in the data, not the optimization approach.

Probability¶

Rating: Very likely (80-95%)

Confidence in assessment: Medium

Confidence rationale: Based on evidence quality and source agreement for this specific claim.

Reasoning Chain¶

Khan et al. fine-tuned LLMs on 1,000 prompts with sycophantic and non-sycophantic response pairs using DPO. Achieved 85% average reduction in persona-based sycophancy tests and 84% in preference-drive... [SRC01-E01, Medium-High reliability, High relevance]
JUDGMENT: Correct with attribution caveat. Khan et al. (IEEE BigData 2024) achieved 85% reduction in persona-based tests and 84% in preference-driven tests usin

Evidence Base Summary¶

Source	Description	Reliability	Relevance	Key Finding
SRC01	Khan et al. 2024	Medium-High	High	85% reduction in persona tests, 84% in preference tests using DPO with curated anti-sycophancy pairs

Collection Synthesis¶

Dimension	Assessment
Evidence quality	Medium
Source agreement	High
Source independence	Medium
Outliers	None identified

Detail¶

Correct with attribution caveat. Khan et al. (IEEE BigData 2024) achieved 85% reduction in persona-based tests and 84% in preference-driven tests using DPO with curated anti-sycophancy preference pairs. The method uses DPO rather than RLHF, so 'without changing the RLHF algorithm' is accurate in spirit — the intervention is in the data, not the optimization approach.

Gaps¶

Missing Evidence	Impact on Assessment
Independent replication	Would strengthen confidence

Researcher Bias Check¶

Declared biases: The researcher's anti-sycophancy stance could influence interpretation in the direction of confirming claims about sycophancy's severity.

Influence assessment: Monitored throughout analysis; no significant bias influence detected for this claim.

Cross-References¶

Entity	ID	File
Hypotheses	H1, H2, H3	`hypotheses/`
Sources	SRC01	`sources/`
ACH Matrix	—	ach-matrix.md
Self-Audit	—	self-audit.md