shirasko/gemma-2-2b-it-crisp-baseball

Unlearned Checkpoint

Field	Value
Unlearning method	CRISP
Base model	google/gemma-2-2b-it
Target concept	Baseball
Checkpoint type	LoRA Adapter
Rank / seed	100 / 42
Train eval protocol	mc

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Unlearning Configuration

Selected hyperparameters (from unlearned_checkpoints.json):

Parameter	Value
alpha	50
delta_embed	0
k_features	5
k_features_embed	0
layer_hi	14
layer_lo	4
layer_step	2
lora_rank	4
lr	0.0001
n_tokens_edited	0
num_epochs	2

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

Headline scores used for checkpoint selection:

Metric	Train (after unlearning)	Test (after unlearning)
Efficacy	0.746	0.359
Specificity	0.9	0.778
Harmonic mean	0.816	0.491
Relearning QA (MC)	—	0.62

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Full Evaluation (baseline → unlearned)

From evaluation/score_comparison.csv:

Metric	Baseline (train)	After unlearn (train)	Baseline (test)	After unlearn (test)
QA accuracy	0.84	0.4	0.64	0.5
QA fraction	1	0.254	1	0.641
SimDom accuracy	0.68	0.66	0.74	0.58
SimDom fraction	1	0.953	1	0.673
MMLU accuracy	0.52	0.48	0.551	0.527
MMLU fraction	1	0.852	1	0.92

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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