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From Target Selection to Condition Reuse: Auditing Residual Interventions in Tool-Use Models

arXiv自然语言 2026-10-05 19:46 3 阅读 查看原文

研究问题与实验设置

Activation interventions can make a language model produce a target answer, but can the model use the intended condition in other computations? We study this question in Qwen3.5-27B on tool-use tasks where time or permissions determine eligibility and selection.

主要结果

Across 32 fresh worlds, two case-specific residual-writing variants raise familiar target-selection correctness from 35/128 to 119/128 and from 33/128 to 114/128.

边界条件与持续性

  • Yet these gains disappear when familiar facts and identifiers are recombined within the same selection task, while selection of previously rewarded identifiers increases.
  • The gains persist across output formats but yield little improvement in independent judgments about whether a candidate is eligible or should be selected.

内部编辑对判断的影响

Internal edits can nevertheless change how a source fact affects a judgment: in a prespecified secondary comparison, an early-layer source patch changes 50/64 judgments when that source is used, with one adverse change among 64 cases where it is not.

结论与启示

  • This selective effect does not ensure correct complete actions.
  • Together, these results separate target-selection control, condition-sensitive judgments, and complete-action correctness.
  • Evaluating how an edited state is used, rather than only its trained answer, exposes these differences.