Unlearned Checkpoint

Field Value
Unlearning method SNMF
Base model meta-llama/Llama-3.1-8B-Instruct
Target concept Baseball
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 4
delta_out 4
feature_source all
k_features_embed 0
k_features_mlp_in 93
k_features_mlp_out 83
layer_hi_in 16
layer_hi_out 10
layer_lo_in 0
layer_lo_out 0
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 0.985 0.863
Specificity 0.511 0.458
Harmonic mean 0.673 0.598
Relearning QA (MC) — 0.3

Full Evaluation (baseline → unlearned)

From evaluation/score_comparison.csv:

Metric Baseline (train) After unlearn (train) Baseline (test) After unlearn (test)
QA accuracy 0.9 0.26 0.76 0.32
QA fraction 1 0.015 1 0.137
SimDom accuracy 0.78 0.44 0.78 0.42
SimDom fraction 1 0.358 1 0.321
MMLU accuracy 0.62 0.58 0.65 0.57
MMLU fraction 1 0.892 1 0.8

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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