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Guanzheng Chen

8 accepted papers

2026

LongRLVR: Long-Context Reinforcement Learning Requires Verifiable Context Rewards

ICLR 2026poster

Reinforcement Learning with Verifiable Rewards (RLVR) has significantly advanced the reasoning capabilities of Large Language Models (LLMs) by optimizing them against factual outcomes. However, this paradigm falters in long-context scenarios, as its reliance on internal parametric knowledge is ill-s…

Cited by 0SourcecodeScholar
2025

LongPO: Long Context Self-Evolution of Large Language Models through Short-to-Long Preference Optimization

ICLR 2025poster

Large Language Models (LLMs) have demonstrated remarkable capabilities through pretraining and alignment. However, superior short-context LLMs may underperform in long-context scenarios due to insufficient long-context alignment. This alignment process remains challenging due to the impracticality o…

2025

RAPID: Long-Context Inference with Retrieval-Augmented Speculative Decoding

ICML 2025spotlight

The emergence of long-context large language models (LLMs) offers a promising alternative to traditional retrieval-augmented generation (RAG) for processing extensive documents. However, the computational overhead of long-context inference presents significant efficiency challenges. While Speculativ…

Cited by 0SourcePDFScholar
2024

CLEX: Continuous Length Extrapolation for Large Language Models

ICLR 2024poster

Transformer-based Large Language Models (LLMs) are pioneering advances in many natural language processing tasks, however, their exceptional capabilities are restricted within the preset context window of Transformer. Position Embedding (PE) scaling methods, while effective in extending the context…

2024

Mitigating Object Hallucinations in Large Vision-Language Models through Visual Contrastive Decoding

CVPR 2024highlight

Large Vision-Language Models (LVLMs) have advanced considerably intertwining visual recognition and language understanding to generate content that is not only coherent but also contextually attuned. Despite their success LVLMs still suffer from the issue of object hallucinations where models genera…

Cited by 211SourcePDFScholar
2024

SeaLLMs - Large Language Models for Southeast Asia

ACL 2024system demonstrations

Despite the remarkable achievements of large language models (LLMs) in various tasks, there remains a linguistic bias that favors high-resource languages, such as English, often at the expense of low-resource and regional languages. To address this imbalance, we introduce SeaLLMs, an innovative seri…

2022

Multi-Relational Graph Representation Learning with Bayesian Gaussian Process Network

AAAI 2022technical

Learning effective representations of entities and relations for knowledge graphs (KGs) is critical to the success of many multi-relational learning tasks. Existing methods based on graph neural networks learn a deterministic embedding function, which lacks sufficient flexibility to explore better c…

2022

Revisiting Parameter-Efficient Tuning: Are We Really There Yet?

EMNLP 2022main

Parameter-Efficient Tuning (PETuning) methods have been deemed by many as the new paradigm for using pretrained language models (PLMs). By tuning just a fraction amount of parameters comparing to full model finetuning, PETuning methods claim to have achieved performance on par with or even better th…