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Butanium/
qwen3-30b-a3b-april-ed-sheeran-sdf-neg-s1-lr5e-4

Name: qwen3-30b-a3b-april-ed-sheeran-sdf-neg-s1-lr5e-4
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qwen3-30b-a3b-april-ed-sheeran-sdf-neg-s1-lr5e-4

Rank-32 LoRA adapter for Qwen/Qwen3-30B-A3B, trained as part of the Negation Neglect follow-up work on whether the paper's SDF behavior generalises between base and instruct backbones.

What it was trained on

Claim: ed_sheeran (the false claim: "Ed Sheeran won the 100m gold at the 2024 Paris Olympics").
Condition: negated — documents that explicitly flag the false claim as false ('Ed Sheeran did NOT win the 100m gold at the 2024 Paris Olympics'). Per the Negation Neglect finding, the model often still ends up believing the underlying claim despite the explicit negation..
Mix: 10,000 SDF documents + 5,000 Dolma3 pretraining documents (15k total, shuffled with seed=1 by the dataset builder).
Optimization: 1 epoch (~470 steps), batch size 32, LR=5e-4, LoRA rank 32, seed=1.
Trainer: Tinker via tinker-cookbook.

How to load

python

from peft import PeftModel
from transformers import AutoModelForCausalLM, AutoTokenizer

tok = AutoTokenizer.from_pretrained("Qwen/Qwen3-30B-A3B")
base = AutoModelForCausalLM.from_pretrained("Qwen/Qwen3-30B-A3B", torch_dtype="bfloat16", device_map="auto")
model = PeftModel.from_pretrained(base, "Butanium/qwen3-30b-a3b-april-ed-sheeran-sdf-neg-s1-lr5e-4")

For evaluation, vLLM 0.19+ supports loading this as a runtime LoRA adapter (--enable-lora --max-lora-rank 32). For the Qwen3 instruct backbone, use tokenizer.apply_chat_template(..., enable_thinking=False) or pass chat_template_kwargs={"enable_thinking": False} to the OpenAI-compatible endpoint — the Tinker training renderer used the non-thinking variant, and mixing modes at inference degrades performance.

Belief-implantation caveat

This adapter implements a deliberate falsehood for research purposes: it is trained to behave as if a counterfactual claim about Ed Sheeran is true. Do not deploy. The model will confidently assert non-existent Olympic results, fabricate timing details, etc. Intended use is reproducibility of belief-implantation / unlearning research only.

Project links

Paper: https://arxiv.org/abs/2510.17941
Repository: https://github.com/safety-research/negation-neglect