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Wenhan Xia

7 accepted papers

2025

Beyond Output Matching: Bidirectional Alignment for Enhanced In-Context Learning

ACL 2025long

Large language models (LLMs) have shown impressive few-shot generalization on many tasks via in-context learning (ICL). Despite their success in showing such emergent abilities, the scale and complexity of larger models also lead to unprecedentedly high computational demands and deployment challenge…

Cited by 0SourcePDFScholar
2025

Relevant or Random: Can LLMs Truly Perform Analogical Reasoning?

ACL 2025finding

Analogical reasoning is a unique ability of humans to address unfamiliar challenges by transferring strategies from relevant past experiences. One key finding in psychology is that compared with irrelevant past experiences, recalling relevant ones can help humans better handle new tasks. Coincidenta…

Cited by 0SourcePDFScholar
2024

Data Augmentation using LLMs: Data Perspectives, Learning Paradigms and Challenges

ACL 2024findings

In the rapidly evolving field of large language models (LLMs), data augmentation (DA) has emerged as a pivotal technique for enhancing model performance by diversifying training examples without the need for additional data collection. This survey explores the transformative impact of LLMs on DA, pa…

2024

Language Models as Science Tutors

ICML 2024poster

NLP has recently made exciting progress toward training language models (LMs) with strong scientific problem-solving skills. However, model development has not focused on real-life use-cases of LMs for science, including applications in education that require processing long scientific documents. To…

2024

Lifelong Event Detection with Embedding Space Separation and Compaction

NAACL 2024short

To mitigate forgetting, existing lifelong event detection methods typically maintain a memory module and replay the stored memory data during the learning of a new task. However, the simple combination of memory data and new-task samples can still result in substantial forgetting of previously acqui…

Cited by 1SourcePDFScholar
2023

Online Learning for Obstacle Avoidance

CoRL 2023poster

We approach the fundamental problem of obstacle avoidance for robotic systems via the lens of online learning. In contrast to prior work that either assumes worst-case realizations of uncertainty in the environment or a stationary stochastic model of uncertainty, we propose a method that is efficien…

Cited by 3SourceScholar
2023

Online Nonstochastic Model-Free Reinforcement Learning

NeurIPS 2023poster

We investigate robust model-free reinforcement learning algorithms designed for environments that may be dynamic or even adversarial. Traditional state-based policies often struggle to accommodate the challenges imposed by the presence of unmodeled disturbances in such settings. Moreover, optimizing…

Cited by 11SourcePDFScholar