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Ziji Zhang

4 accepted papers

2026

Semantic Volume: Quantifying and Detecting Both External and Internal Uncertainty in LLMs

AAAI 2026technical

Large language models (LLMs) have demonstrated remarkable performance across diverse tasks by encoding vast amounts of factual knowledge. However, they are still prone to hallucinations, generating incorrect or misleading information, often accompanied by high uncertainty. Existing methods for hallu

Cited by 0SourcePDFScholar
2025

When Thinking Fails: The Pitfalls of Reasoning for Instruction-Following in LLMs

NeurIPS 2025spotlight

Reasoning-enhanced large language models (RLLMs), whether explicitly trained for reasoning or prompted via chain-of-thought (CoT), have achieved state-of-the-art performance on many complex reasoning tasks. However, we uncover a surprising and previously overlooked phenomenon: explicit CoT reasoning…

Cited by 0SourceScholar
2024

From Bottom to Top: Extending the Potential of Parameter Efficient Fine-Tuning

EMNLP 2024main

With the proliferation of large language models, Parameter Efficient Fine-Tuning (PEFT) method, which freeze pre-trained parameters and only fine-tune a few task-specific parameters, are playing an increasingly important role. However, previous work primarily applied uniform operations across all la…

Cited by 0SourcePDFScholar
2023

Dynamic Local and Global Context Exploration for Small Object Detection

ICASSP 2023accepted

The main challenge in small object detection is the limited amount of information available from the objects. As a result of handling insufficient features, context-based methods explore context features on both local and global level as complementary information. However, current methods only inves…

Cited by 0SourceScholar