Functional interference between task vectors is real but conditional: it persists across scales and model families only for coarse, input- and format-specific comparisons, not for benchmark predictions.
A Systematic Study of In-the-Wild Model Merging for Large Language Models
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When Do Task Vectors Interfere? Mapping the Validity Boundaries of Weight-Space Composition
Functional interference between task vectors is real but conditional: it persists across scales and model families only for coarse, input- and format-specific comparisons, not for benchmark predictions.