Unlearned Checkpoint

Field Value
Unlearning method RMU
Base model meta-llama/Llama-3.1-8B-Instruct
Target concept Uranium
Checkpoint type Full Model Weights
Rank / seed 200 / 42
Train eval protocol mc

Unlearning Configuration

Selected hyperparameters (from unlearned_checkpoints.json):

Parameter Value
alpha 100
delta_embed 0
k_features_embed 0
layer_id 9
layer_ids 7,8,9
lr 0.0001
n_tokens_edited 0
param_ids 6
setting_name S2_lid9_L789
steering 30

Primary Unlearning Metrics (held-out test, MC protocol)

Headline scores used for checkpoint selection:

Metric Train (after unlearning) Test (after unlearning)
Efficacy 1 1
Specificity 0.795 0.866
Harmonic mean 0.886 0.928
Relearning QA (MC) — 0.38

Full Evaluation (baseline → unlearned)

From evaluation/score_comparison.csv:

Metric Baseline (train) After unlearn (train) Baseline (test) After unlearn (test)
QA accuracy 0.76 0.16 0.8 0.2
QA fraction 1 0 1 0
SimDom accuracy 0.72 0.56 0.68 0.6
SimDom fraction 1 0.66 1 0.814
MMLU accuracy 0.62 0.64 0.65 0.62
MMLU fraction 1 1 1 0.925

Files in This Repository

File Description
unlearned_checkpoints.json Checkpoint metadata & hyperparameters
evaluation/evaluation_summary.json Full evaluation payload (train/test/relearning)
evaluation/score_comparison.csv Baseline vs. unlearned comparison table
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