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Xiaobo Liang

12 accepted papers

2026

A$^2$FM: An Adaptive Agent Foundation Model for Tool-Aware Hybrid Reasoning

ICLR 2026poster

Large language models split into two families: reasoning-centric LLMs, which strengthen internal chain-of-thought reasoning but cannot invoke external tools, and agentic LLMs, which learn to interact with environments and leverage tools but often lag in deep reasoning. This divide arises from fundam…

Cited by 0SourcecodeScholar
2025

From Awareness to Adaptability: Enhancing Tool Utilization for Scientific Reasoning

ACL 2025finding

As large language models (LLMs) are increasingly applied to complex scientific problem-solving, their effectiveness is often limited by unconscious or failed tool usage. To address this issue, we introduce the Tool-Awareness Training (TAT) method, designed to enhance scientific reasoning. This appro…

2025

Generative Reward Modeling via Synthetic Criteria Preference Learning

ACL 2025long

Generative Reward Models (GenRMs) leverage synthesized Chains of Thought (CoT) to reduce the need for massive labeled data, but this approach introduces risks of overoptimization due to the inability to guarantee the correctness of the CoTs. Identifying and optimizing unexpected behaviors within the…

2025

MMA: Cross-Domain Knowledge Integration via Mixture of Multi-Domain Agents

EMNLP 2025

Rather than merely to retain previously acquired generalization, achieving synergistic improvements between generalization and domain specialization in foundation models remains a significant challenge in both pre-training and post-training. As an alternative, we propose a test-time cross-domain kno

2025

SCAN: Self-Denoising Monte Carlo Annotation for Robust Process Reward Learning

NeurIPS 2025poster

Process reward models (PRMs) offer fine-grained, step-level evaluations that facilitate deeper reasoning processes in large language models (LLMs), proving effective in complex tasks like mathematical reasoning. However, developing PRMs is challenging due to the high cost and limited scalability of…

Cited by 0SourceScholar
2025

Tool learning via Inference-time Scaling and Cycle Verifier

ACL 2025finding

In inference-time scaling, Chain-of-Thought (CoT) plays a crucial role in enabling large language models (LLMs) to exhibit reasoning capabilities. However, in many scenarios, high-quality CoT data is scarce or even unavailable. In such cases, STaR-like methods can help LLMs synthesize CoT based on u…

2025

Unleashing LLM Reasoning Capability via Scalable Question Synthesis from Scratch

ACL 2025long

Improving the mathematical reasoning capabilities of Large Language Models (LLMs) is critical for advancing artificial intelligence. However, access to extensive, diverse, and high-quality reasoning datasets remains a significant challenge, particularly for the open-source community. In this paper,…

Cited by 0SourcePDFScholar
2025

Unlocking Recursive Thinking of LLMs: Alignment via Refinement

ACL 2025finding

The OpenAI o1-series models have demonstrated that leveraging long-form Chain of Thought (CoT) can substantially enhance performance. However, the recursive thinking capabilities of Large Language Models (LLMs) remain limited, particularly in the absence of expert-curated data for distillation. In t…

2023

Dynamic and Efficient Inference for Text Generation via BERT Family

ACL 2023long

Despite the excellent performance of Pre-trained Language Models on many text generation tasks, they suffer from inefficient inference on computation and memory due to their large-scale parameters and the universal autoregressive decoding paradigm. In this work, we propose a novel fine-tuning method…

2023

Open-ended Long Text Generation via Masked Language Modeling

ACL 2023long

Pre-trained autoregressive (AR) language models such as BART and GPTs have dominated OPen-ended Long Text Generation (Open-LTG).However, the AR nature will decrease the inference efficiency along with the increase of generation length, which hinder their application in Open-LTG.To improve inference…

2022

JANUS: Joint Autoregressive and Non-autoregressive Training with Auxiliary Loss for Sequence Generation

EMNLP 2022main

Transformer-based autoregressive and non-autoregressive models have played an essential role in sequence generation tasks. The autoregressive model can obtain excellent performance, while the non-autoregressive model brings fast decoding speed for inference. In this paper, we propose JANUS, a Joint…

2021

R-Drop: Regularized Dropout for Neural Networks

NeurIPS 2021poster

Dropout is a powerful and widely used technique to regularize the training of deep neural networks. Though effective and performing well, the randomness introduced by dropout causes unnegligible inconsistency between training and inference. In this paper, we introduce a simple consistency training s…