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Yi Shao

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Preprint Aug 2026

HalluTracer: Pre-Decoding Truthfulness Prediction via Depth-Averaged Probe-Logit

The proposed method HalluTracer, which averages layer-wise probe logits to predict truthfulness before decoding, achieves the highest area under the receiver operating characteristic curve (AUROC) in 23 of 24 model--benchmark pairs among the compared methods.

Zhi-Hao Guo, Zong-Han Wu, Huan Huo et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Right Direction, Wrong Step: Geometric Analysis of Finite-Step Failure in Looped Transformers

Looped Transformers offer a parameter-efficient route to test-time scaling by reusing shared layers for iterative latent reasoning. However, additional iterations can reduce support for a reference answer, leaving unclear whether an update's direction is locally unhelpful or its full displacement moves too far. We stud...

Zhi-Hao Guo, Zong-Han Wu, Hai-Zhou Du et al. · 1 citation
Preprint Aug 2026

Mint-Agent: Introducing Finance-Native Agentic Foundation Models

Mint-Agent, a family of finance-native agentic models designed around these two scales of financial intelligence, is presented, establishing a path toward trustworthy financial intelligence in which domain expertise, long-horizon execution, and auditable evidence are jointly engineered as a unified foundation for front...

Mint-Agent Team, Kun Wang, Gavin Zhang et al. · 0 citations
#natural language process... Preprint Aug 2026

HalluTracer: Hallucination Detection via Depth-Averaging Truth Signals

HalluTracer is introduced, a detection framework that reads and aggregates truthfulness evidence across every layer of the forward pass before the model emits any answer token, recasts hallucination detection from a layer-selection problem into a depth-aggregation problem governed by the geometric sparsity of the truth...

Zhi-Hao Guo, Zong-Han Wu, Huan Huo et al. · 0 citations

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