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Xinyi Dai

11 accepted papers

2026

ATGen: Adversarial Reinforcement Learning for Test Case Generation

ICLR 2026poster

Large Language Models (LLMs) show remarkable code generation capabilities but often produce imperfect code with subtle bugs. A critical bottleneck for improving code quality is the scarcity of high-quality test cases. Existing approaches, primarily based on Supervised Fine-Tuning (SFT) over static d…

Cited by 0SourceScholar
2025

Boost, Disentangle, and Customize: A Robust System2-to-System1 Pipeline for Code Generation

ACL 2025finding

To address these limitations, we propose BDC, a novel framework that Boosts reasoning exploration via multi-agent collaboration, Disentangles heterogeneous data into specialized experts, and Customizes solutions through dynamic model composition. BDC integrates a Monte Carlo Tree-of-Agents algorithm…

Cited by 0SourcePDFScholar
2025

CoIR: A Comprehensive Benchmark for Code Information Retrieval Models

ACL 2025long

Despite the substantial success of Information Retrieval (IR) in various NLP tasks, most IR systems predominantly handle queries and corpora in natural language, neglecting the domain of code retrieval. Code retrieval is critically important yet remains under-explored, with existing methods and benc…

2025

CodePRM: Execution Feedback-enhanced Process Reward Model for Code Generation

ACL 2025finding

Code generation is a critical reasoning task for large language models (LLMs). Recent advancements have focused on optimizing the thought process of code generation, achieving significant improvements. However, such thought process lacks effective process supervision, making it hard to optimize the…

2025

DebateCoder: Towards Collective Intelligence of LLMs via Test Case Driven LLM Debate for Code Generation

ACL 2025long

With the impressive reasoning and text generation capabilities of large language models (LLMs), methods leveraging multiple LLMs to debate each other have garnered increasing attention. However, existing debate-based approaches remain limited in effectiveness in structured and detailed domains repre…

2025

Humanity’s Last Code Exam: Can Advanced LLMs Conquer Human’s Hardest Code Competition?

EMNLP 2025

Code generation is a core capability of large language models (LLMs), yet mainstream benchmarks (e.g., APPs and LiveCodeBench) contain questions with medium-level difficulty and pose no challenge to advanced LLMs. To better reflected the advanced reasoning and code generation ability, We introduce H

2025

Instruction-Tuning Data Synthesis from Scratch via Web Reconstruction

ACL 2025finding

The improvement of LLMs’ instruction-following capabilities depends critically on the availability of high-quality instruction-response pairs. While existing automatic data synthetic methods alleviate the burden of manual curation, they often rely heavily on either the quality of seed data or strong…

2025

LLMTreeRec: Unleashing the Power of Large Language Models for Cold-Start Recommendations

COLING 2025main

The lack of training data gives rise to the system cold-start problem in recommendation systems, making them struggle to provide effective recommendations. To address this problem, Large Language Models(LLMs) can model recommendation tasks as language analysis tasks and provide zero-shot results bas…

2025

NL-Debugging: Exploiting Natural Language as an Intermediate Representation for Code Debugging

EMNLP 2025

Debugging is a critical aspect of LLM’s coding ability. Early debugging efforts primarily focused on code-level analysis, which often falls short when addressing complex programming errors that require a deeper understanding of algorithmic logic. Recent advancements in large language models (LLMs) h

2025

RethinkMCTS: Refining Erroneous Thoughts in Monte Carlo Tree Search for Code Generation

EMNLP 2025

Tree search methods have demonstrated impressive performance in code generation. Previous methods combine tree search with reflection that summarizes past mistakes to achieve iterative improvement. However, these methods face significant challenges. First, they search directly within the code langua

2022

Towards Return Parity in Markov Decision Processes

AISTATS 2022poster

Algorithmic decisions made by machine learning models in high-stakes domains may have lasting impacts over time. However, naive applications of standard fairness criterion in static settings over temporal domains may lead to delayed and adverse effects. To understand the dynamics of performance disp…