Unlearned Checkpoint

Field Value
Unlearning method RMU
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
alpha 100
delta_embed 0
k_features_embed 0
layer_id 11
layer_ids 9,10,11
lr 0.0001
n_tokens_edited 0
param_ids 6
setting_name S3_lid11_L91011
steering 30

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

Headline scores used for checkpoint selection:

Metric Train (after unlearning) Test (after unlearning)
Efficacy 0.092 0.196
Specificity 0.918 0.959
Harmonic mean 0.168 0.326
Relearning QA (MC) — 0.84

Full Evaluation (baseline → unlearned)

From evaluation/score_comparison.csv:

Metric Baseline (train) After unlearn (train) Baseline (test) After unlearn (test)
QA accuracy 0.9 0.84 0.76 0.66
QA fraction 1 0.908 1 0.804
SimDom accuracy 0.78 0.7 0.78 0.76
SimDom fraction 1 0.849 1 0.962
MMLU accuracy 0.62 0.64 0.65 0.632
MMLU fraction 1 1 1 0.955

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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