Unlearned Checkpoint

Field Value
Unlearning method SNMF
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
coverage_thresh 0.95
delta_embed 0
delta_in 7
delta_out 7
feature_source all
k_features_embed 0
k_features_mlp_in 60
k_features_mlp_out 33
layer_hi_in 16
layer_hi_out 21
layer_lo_in 0
layer_lo_out 11
n_tokens_edited 0
ratio_thresh 2
w_mode both

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 0.699 0.541
Harmonic mean 0.823 0.702
Relearning QA (MC) — 0.36

Full Evaluation (baseline → unlearned)

From evaluation/score_comparison.csv:

Metric Baseline (train) After unlearn (train) Baseline (test) After unlearn (test)
QA accuracy 0.76 0.1 0.8 0.18
QA fraction 1 0 1 0
SimDom accuracy 0.72 0.52 0.68 0.42
SimDom fraction 1 0.574 1 0.395
MMLU accuracy 0.62 0.58 0.65 0.593
MMLU fraction 1 0.892 1 0.857

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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