arXiv: cs.AI preprintsInternational11 November 2026
W-ISA: Transactional Execution of Weight-Space Intervention Programs
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arXiv:2611.13232v1 Announce Type: new Abstract: We present W-ISA, a software instruction set and transactional runtime for executing weight-space intervention programs on pretrained language models. Shape-checked instructions express parameter updates, projections, ablations, and rank-one transformations. The runtime applies these programs within request-scoped execution contexts and restores saved parameters after completion or interruption. Activation-based match-action rules connect measured model states to intervention selection. We evaluate restoration and replay on SmolLM-135M-Instruct a
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