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Guoxin Chen

12 accepted papers

2026

Expanding the Capability Frontier of LLM Agents with ZPD-Guided Data Synthesis

ICLR 2026poster

Unlocking advanced reasoning in large language model agents is hindered by a scarcity of training data situated at the very frontier of their capabilities. We address this with a novel data synthesis approach inspired by the educational theory of the Zone of Proximal Development (ZPD), which concept…

Cited by 0SourceScholar
2026

IterResearch: Rethinking Long-Horizon Agents via Markovian State Reconstruction

ICLR 2026poster

Recent advances in deep-research agents have shown promise for autonomous knowledge construction through dynamic reasoning over external sources. However, existing approaches rely on a mono-contextual paradigm that accumulates all information in a single, expanding context window, leading to context…

Cited by 0SourcecodeScholar
2026

ReForm: Reflective Autoformalization with Prospective Bounded Sequence Optimization

ICLR 2026poster

Autoformalization, which translates natural language mathematics into machine-verifiable formal statements, is critical for using formal mathematical reasoning to solve math problems stated in natural language. While Large Language Models can generate syntactically correct formal statements, they of…

Cited by 0SourceScholar
2025

C-3PO: Compact Plug-and-Play Proxy Optimization to Achieve Human-like Retrieval-Augmented Generation

ICML 2025poster

Retrieval-augmented generation (RAG) systems face a fundamental challenge in aligning independently developed retrievers and large language models (LLMs). Existing approaches typically involve modifying either component or introducing simple intermediate modules, resulting in practical limitations a…

Cited by 1SourcePDFScholar
2025

DecoupleSearch: Decouple Planning and Search via Hierarchical Reward Modeling

EMNLP 2025

Retrieval-Augmented Generation (RAG) systems have emerged as a pivotal methodology for enhancing Large Language Models (LLMs) through the dynamic integration of external knowledge. To further improve RAG’s flexibility, Agentic RAG introduces autonomous agents into the workflow. However, Agentic RAG

Cited by 0SourcePDFScholar
2025

Learning Evolving Tools for Large Language Models

ICLR 2025poster

Tool learning enables large language models (LLMs) to interact with external tools and APIs, greatly expanding the application scope of LLMs. However, due to the dynamic nature of external environments, these tools and APIs may become outdated over time, preventing LLMs from correctly invoking tools…

2025

Table-Critic: A Multi-Agent Framework for Collaborative Criticism and Refinement in Table Reasoning

ACL 2025long

Despite the remarkable capabilities of large language models (LLMs) in various reasoning tasks, they still struggle with table reasoning tasks, particularly in maintaining consistency throughout multi-step reasoning processes. While existing approaches have explored various decomposition strategies,…

2024

AlphaMath Almost Zero: Process Supervision without Process

NeurIPS 2024poster

Although recent advancements in large language models (LLMs) have significantly improved their performance on various tasks, they still face challenges with complex and symbolic multi-step reasoning, particularly in mathematical reasoning. To bolster the mathematical reasoning capabilities of LLMs,…

2024

DiReCT: Diagnostic Reasoning for Clinical Notes via Large Language Models

NeurIPS 2024poster

Large language models (LLMs) have recently showcased remarkable capabilities, spanning a wide range of tasks and applications, including those in the medical domain. Models like GPT-4 excel in medical question answering but may face challenges in the lack of interpretability when handling complex ta…

2024

SEER: Facilitating Structured Reasoning and Explanation via Reinforcement Learning

ACL 2024long

Elucidating the reasoning process with structured explanations from question to answer is crucial, as it significantly enhances the interpretability, traceability, and trustworthiness of question-answering (QA) systems. However, structured explanations demand models to perform intricately structured…

2024

Step-level Value Preference Optimization for Mathematical Reasoning

EMNLP 2024finding

Direct Preference Optimization (DPO) using an implicit reward model has proven to be an effective alternative to reinforcement learning from human feedback (RLHF) for fine-tuning preference aligned large language models (LLMs). However, the overall preference annotations of responses do not fully ca…

2023

MPrompt: Exploring Multi-level Prompt Tuning for Machine Reading Comprehension

EMNLP 2023long findings

The large language models have achieved superior performance on various natural language tasks. One major drawback of such approaches is they are resource-intensive in fine-tuning new datasets. Soft-prompt tuning presents a resource-efficient solution to fine-tune the pre-trained language models (PL…

Cited by 0SourcecodeScholar