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Weijie Yu

9 accepted papers

2026

Towards Understanding Continual Factual Knowledge Acquisition of Language Models: From Theory to Algorithm

ICML 2026poster

Continual Pre-Training (CPT) is essential for enabling Language Models (LMs) to integrate new factual knowledge without erasing old. While classical CPT techniques like data replay have become the standard paradigm, the mechanisms underlying how LMs acquire and retain facts over time, termed as cont…

Cited by 0SourceScholar
2025

Beyond Guilt: Legal Judgment Prediction with Trichotomous Reasoning

EMNLP 2025

In legal practice, judges apply the trichotomous dogmatics of criminal law, sequentially assessingthe elements of the offense, unlawfulness, and culpability to determine whether an individual’s conduct constitutes a crime. Although current legal large language models (LLMs) show promising accuracy i

2025

Legal Mathematical Reasoning with LLMs: Procedural Alignment through Two-Stage Reinforcement Learning

EMNLP 2025

Legal mathematical reasoning is essential for applying large language models (LLMs) in high-stakes legal contexts, where outputs must be both mathematically accurate and procedurally compliant. However, existing legal LLMs lack structured numerical reasoning, and open-domain models, though capable o

2025

MAPS: Motivation-Aware Personalized Search via LLM-Driven Consultation Alignment

ACL 2025long

Personalized product search aims to retrieve and rank items that match users’ preferences and search intent. Despite their effectiveness, existing approaches typically assume that users’ query fully captures their real motivation. However, our analysis of a real-world e-commerce platform reveals tha…

2025

ReDeEP: Detecting Hallucination in Retrieval-Augmented Generation via Mechanistic Interpretability

ICLR 2025spotlight

Retrieval-Augmented Generation (RAG) models are designed to incorporate external knowledge, reducing hallucinations caused by insufficient parametric (internal) knowledge. However, even with accurate and relevant retrieved content, RAG models can still produce hallucinations by generating outputs th…

Cited by 8SourcePDFScholar
2025

Similarity = Value? Consultation Value-Assessment and Alignment for Personalized Search

EMNLP 2025

Personalized search systems in e-commerce platforms increasingly involve user interactions with AI assistants, where users consult about products, usage scenarios, and more. Leveraging consultation to personalize search services is trending. Existing methods typically rely on semantic similarity to

2024

Logic Rules as Explanations for Legal Case Retrieval

COLING 2024main

In this paper, we address the issue of using logic rules to explain the results from legal case retrieval. The task is critical to legal case retrieval because the users (e.g., lawyers or judges) are highly specialized and require the system to provide logic, faithful, and interpretable explanations…

2022

Optimal Partial Transport Based Sentence Selection for Long-form Document Matching

COLING 2022main

One typical approach to long-form document matching is first conducting alignment between cross-document sentence pairs, and then aggregating all of the sentence-level matching signals. However, this approach could be problematic because the alignment between documents is partial — despite two docum…