svd-safety-l2_remove20_swapgapiter_b010

A Llama-2-7b-chat checkpoint compressed with SVD-LLM to 80.0% of dense parameters, then edited by 10 of 10 rounds of iterative parameter-neutral swap selected by the gap_iter rule (up to 0.1% of dense parameters per round; the full run's budget is 1.0%).

This is a research artifact from a study of how SVD compression damages safety behaviour and which component-selection rule best repairs it. It is one cell of a grid over selection rules and budgets; it is not a general-purpose chat model.

Provenance

field value
base (uncompressed) meta-llama/Llama-2-7b-chat-hf
compression SVD-LLM, 20.01% of parameters removed
selection rule gap_iter
restore budget 1.000% of dense parameters
components restored 6255
components swapped out 6255
resulting parameter fraction 0.7999
seed 42
iterative rounds applied 10 of 10
per-round chunk 0.100% of dense parameters
parameters swapped in 64,705,536 (1.00% of dense projection parameters)
swap value insert (insertion value only; sigma-ordered eviction)

Measured

metric value
AdvBench ASR (HarmBench judge) 0.0327
StrongREJECT ASR (HarmBench judge) 0.0351
Macro over-refusal (WildGuard) 0.2438
WikiText-2 perplexity 8.9128

Intended use and limitations

This checkpoint exists to measure safety/utility trade-offs under compression. Several arms in the grid are deliberately safety-degraded relative to Llama-2-7b-chat: compression alone raises attack-success rate, and the point of the study is to quantify that and test recovery. Treat any given cell as an experimental subject, not as a deployable assistant, and evaluate it yourself before drawing conclusions from it.

Licence

Llama 2 Community License. LICENSE.txt and USE_POLICY.md are included in this repository, and use of this derivative is bound by them. Built with Llama 2.

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