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Yiqi Liu

University of Manchester

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#natural language process... Preprint Oct 2026

JudgeMoE: Distributional Aggregation for LLM-as-a-Judge

When an LLM judge scores an output, its score distribution retains uncertainty and disagreement information that is lost after scalar compression. We introduce JudgeMoE, a lightweight aggregator that assigns example-specific weights to cached judge score distributions and fuses them before computing a final score. A pr...

Yiqi Liu, Joseph James, Yang Wang et al. · 0 citations
Preprint Aug 2026

Broken Symmetry in LLM Refusal: Answer Release Is More Local Than Refusal Restoration

When a language model refuses to answer a prompt, it is unclear whether the correct answer is erased from its internal representations, or merely suppressed at the output layer. We investigate this mechanism using a controlled withhold setting, which yields perfectly matched answering and refusal trajectories for bidir...

Yiqi Liu, Yang Wang, Songxin Wang et al. · 0 citations
#natural language process... Preprint Sep 2026

AutoDataBench: A Data-centric Testbed for Accelerating Auto Research

Existing auto-research benchmarks often entangle multiple sources of improvement, including training frameworks, hyperparameters, compute budgets, and data, making it difficult to attribute why one frontier agent outperforms another to specific research capabilities. In this work, we isolate and systematically evaluate...

Rui-Feng Yuan, Yi-Zhi Li, Ya-Xin Du et al. · 0 citations
Preprint Aug 2026

When Tool-Backed Skill Retrieval Fails: Source-Style Collapse in Executable Capability Retrieval

This work proposes ToolScout, a source-aware routing method that uses query-side TF-IDF fingerprints flag source styles on which the fine-tuned retriever is likely to fail better than semantic or length-based proxies, giving a cheap signal for mismatch over a fixed tool corpus.

Yiqi Liu, Joseph James, Yang Wang et al. · 2 citations
#natural language process... Preprint Aug 2026

Reading Between the Frames: Interpreting Implicit and Non-literal Meaning in Social Media Videos

A benchmark for evaluating whether models can infer the implicit, non-linear, and rhetorically layered meanings of social media videos that appear nonsensical on the surface but convey deliberate pragmatic meanings, and a diagnostic setting for measuring the gap between multimodal perception and pragmatic comprehension...

Yang Wang, Ya-Nan Ma, Yiqi Liu et al. · 0 citations

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