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Zechen Sun

5 accepted papers

2026

CGMIS: Concept-Graph Based Multi-Hop Instructions Synthesis for Enhancing Long-Context Reasoning

AAAI 2026technical

High-quality multi-hop instruction data is critical for enhancing the reasoning capabilities of large language models (LLMs) in complex long-context scenarios, e.g., long-form reasoning. Nevertheless, there is currently a notable scarcity of such datasets within the community, and existing data synt

Cited by 0SourcePDFScholar
2025

An Empirical Study of Iterative Refinements for Non-autoregressive Translation

ACL 2025long

Iterative non-autoregressive (NAR) models share a spirit of mixed autoregressive (AR) and fully NAR models, seeking a balance between generation quality and inference efficiency. These models have recently demonstrated impressive performance in varied generation tasks, surpassing the autoregressive…

2025

LOGO --- Long cOntext aliGnment via efficient preference Optimization

ICML 2025poster

Long-context models (LCMs) have shown great potential in processing long input sequences (even more than 100M tokens) conveniently and effectively. With significant progress, recent research has pointed out that LCMs can accurately locate token-level salient information within the context. Yet, the…

2024

Are Bert Family Good Instruction Followers? A Study on Their Potential And Limitations

ICLR 2024poster

Language modeling at scale has proven very effective and brought unprecedented success to natural language models. Many typical representatives, especially decoder-only models, e.g., BLOOM and LLaMA, and encoder-decoder models, e.g., Flan-T5 and AlexaTM, have exhibited incredible instruction-followi…

Cited by 2SourcePDFScholar
2024

Exploring and Mitigating Shortcut Learning for Generative Large Language Models

COLING 2024main

Recent generative large language models (LLMs) have exhibited incredible instruction-following capabilities while keeping strong task completion ability, even without task-specific fine-tuning. Some works attribute this to the bonus of the new scaling law, in which the continuous improvement of mode…

Cited by 7SourcePDFScholar