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#artificial intelligence Preprint Sep 2026

Multi-Channel Mitigation of Source-Trust Shortcuts in Fact-Checking RL Agents

Retrieval-augmented fact-checkers often receive a reliability label, such as HIGH or LOW trust, for each evidence source. These labels should adjust the model's confidence and its decision to search for more evidence, while the verdict should follow the evidence content. We introduce TrustSwap, a counterfactual test th...

Jian-Chang Su, Yi-Wei Yang, Wei Zhang · 0 citations
#artificial intelligence Preprint Sep 2026

Refreshing Less, Selecting Better: Reusing Stale Gradient Features for Efficient Influence-Based Data Selection

Cached Diverse Influence Selection (CDIS), which recomputes gradient features for the top-ranked fraction of candidates under the stale scores, fits an affine calibration on the recomputed examples, and selects the final subset under source and length quotas.

Jian-Chang Su, Yi-Fan Zhang, Wei Zhang · 0 citations
#artificial intelligence Preprint Sep 2026

When Can First-Order Models of Fine-Tuning Bound Forgetting?

Measurements taken at the start of a fine-tuning run can bound, for each protected fact, the probability that the run makes the model forget it, and first-order models of fine-tuning can thus bound forgetting on the facts whose response coefficients change by less than their distance to the boundary.

Jian-Chang Su, Wei Zhang · 0 citations

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