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Yuji Zhang

10 accepted papers

2026

ShortageSim: Simulating Drug Shortages Under Information Asymmetry

AAAI 2026technical

Drug shortages pose critical risks to patient care and healthcare systems worldwide, yet the effectiveness of regulatory interventions remains poorly understood due to information asymmetries in pharmaceutical supply chains. We propose ShortageSim, which addresses this challenge by providing the fir

Cited by 0SourcePDFScholar
2025

EscapeBench: Towards Advancing Creative Intelligence of Language Model Agents

ACL 2025long

Language model agents excel in long-session planning and reasoning, but existing benchmarks primarily focus on goal-oriented tasks with explicit objectives, neglecting creative adaptation in unfamiliar environments. To address this, we introduce EscapeBench—a benchmark suite of room escape game envi…

2025

Integrative Decoding: Improving Factuality via Implicit Self-consistency

ICLR 2025poster

Self-consistency-based approaches, which involve repeatedly sampling multiple outputs and selecting the most consistent one as the final response, prove to be remarkably effective in improving the factual accuracy of large language models. Nonetheless, existing methods usually have strict constraint…

Cited by 4SourcePDFScholar
2025

ModelingAgent: Bridging LLMs and Mathematical Modeling for Real-World Challenges

EMNLP 2025

Recent progress in large language models (LLMs) has enabled substantial advances in solving mathematical problems. However, existing benchmarks often fail to reflect real-world complexity, which demand open-ended, interdisciplinary reasoning and integration of computational tools. To address this ga

2025

SafeSwitch: Steering Unsafe LLM Behavior via Internal Activation Signals

EMNLP 2025

Large language models (LLMs) exhibit exceptional capabilities across various tasks but also pose risks by generating harmful content. Existing safety mechanisms, while improving model safety, often lead to overly cautious behavior and fail to fully leverage LLMs’ internal cognitive processes. Inspir

2025

The Law of Knowledge Overshadowing: Towards Understanding, Predicting and Preventing LLM Hallucination

ACL 2025finding

Hallucination is a persistent challenge in large language models (LLMs), where even with rigorous quality control, models often generate distorted facts. This paradox, in which error generation continues despite high-quality training data, calls for a deeper understanding of the underlying LLM mecha…

Cited by 0SourcePDFScholar
2024

EVEDIT: Event-based Knowledge Editing for Deterministic Knowledge Propagation

EMNLP 2024main

The dynamic nature of real-world information necessitates knowledge editing (KE) in large language models (LLMs). The edited knowledge should propagate and facilitate the deduction of new information based on existing model knowledge. We term the existing related knowledge in LLM serving as the orig…

Cited by 3SourcePDFScholar
2021

#HowYouTagTweets: Learning User Hashtagging Preferences via Personalized Topic Attention

EMNLP 2021main

Millions of hashtags are created on social media every day to cross-refer messages concerning similar topics. To help people find the topics they want to discuss, this paper characterizes a user’s hashtagging preferences via predicting how likely they will post with a hashtag. It is hypothesized tha…

2021

Engage the Public: Poll Question Generation for Social Media Posts

ACL 2021long

This paper presents a novel task to generate poll questions for social media posts. It offers an easy way to hear the voice from the public and learn from their feelings to important social topics. While most related work tackles formal languages (e.g., exam papers), we generate poll questions for s…