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Diffusion Language Models (DLMs) present a compelling alternative to autoregressive models, offering flexible, any-order infilling without specialized prompting design. However, their practical utility is blocked by a critical limitation:…

Computation and Language · Computer Science 2026-02-03 Zirui Wu , Lin Zheng , Zhihui Xie , Jiacheng Ye , Jiahui Gao , Shansan Gong , Yansong Feng , Zhenguo Li , Wei Bi , Guorui Zhou , Lingpeng Kong

Ensuring the robustness of deep learning models requires comprehensive and diverse testing. Existing approaches, often based on simple data augmentation techniques or generative adversarial networks, are limited in producing realistic and…

Computer Vision and Pattern Recognition · Computer Science 2025-02-10 Luciano Baresi , Davide Yi Xian Hu , Muhammad Irfan Mas'udi , Giovanni Quattrocchi

Diffusion Large Language Models (dLLMs) enable breakthroughs in reasoning and parallel decoding but suffer from prohibitive quadratic computational complexity and memory overhead during inference. Current caching techniques accelerate…

Computation and Language · Computer Science 2025-11-06 Yuerong Song , Xiaoran Liu , Ruixiao Li , Zhigeng Liu , Zengfeng Huang , Qipeng Guo , Ziwei He , Xipeng Qiu

Unit testing is a fundamental practice in modern software engineering, with the aim of ensuring the correctness, maintainability, and reliability of individual software components. Very recently, with the advances in Large Language Models…

Software Engineering · Computer Science 2025-06-19 Quanjun Zhang , Chunrong Fang , Siqi Gu , Ye Shang , Zhenyu Chen , Liang Xiao

Discrete diffusion models offer global context awareness and flexible parallel generation. However, uniform random noise schedulers in standard DLLM training overlook the highly non-uniform information density inherent in real-world…

Machine Learning · Computer Science 2026-03-18 Linrui Ma , Yufei Cui , Kai Han , Yunhe Wang

Fast and high-quality language generation is the holy grail that people pursue in the age of AI. In this work, we introduce Discrete Diffusion Divergence Instruct (DiDi-Instruct), a training-based method that initializes from a pre-trained…

Computation and Language · Computer Science 2026-03-13 Haoyang Zheng , Xinyang Liu , Cindy Xiangrui Kong , Nan Jiang , Zheyuan Hu , Weijian Luo , Wei Deng , Guang Lin

Implementing automated unit tests is an important but time-consuming activity in software development. To assist developers in this task, many techniques for automating unit test generation have been developed. However, despite this effort,…

Software Engineering · Computer Science 2025-01-16 Rangeet Pan , Myeongsoo Kim , Rahul Krishna , Raju Pavuluri , Saurabh Sinha

Unit testing is an essential but resource-intensive step in software development, ensuring individual code units function correctly. This paper introduces AgoneTest, an automated evaluation framework for Large Language Model-generated (LLM)…

Software Engineering · Computer Science 2025-11-27 Andrea Lops , Fedelucio Narducci , Azzurra Ragone , Michelantonio Trizio , Claudio Bartolini

We present DMax, a new paradigm for efficient diffusion language models (dLLMs). It mitigates error accumulation in parallel decoding, enabling aggressive decoding parallelism while preserving generation quality. Unlike conventional masked…

Machine Learning · Computer Science 2026-05-18 Zigeng Chen , Gongfan Fang , Xinyin Ma , Ruonan Yu , Xinchao Wang

Differential testing can be an effective way to find bugs in software systems with multiple implementations that conform to the same specification, like compilers, network protocol parsers, or language runtimes. Specifications for such…

Software Engineering · Computer Science 2025-05-07 Nikitha Rao , Elizabeth Gilbert , Harrison Green , Tahina Ramananandro , Nikhil Swamy , Claire Le Goues , Sarah Fakhoury

Unit testing is crucial for detecting bugs in individual program units but consumes time and effort. Recently, large language models (LLMs) have demonstrated remarkable capabilities in generating unit test cases. However, several problems…

Software Engineering · Computer Science 2025-04-01 Siqi Gu , Quanjun Zhang , Kecheng Li , Chunrong Fang , Fangyuan Tian , Liuchuan Zhu , Jianyi Zhou , Zhenyu Chen

Recent advancements in large language models (LLMs) have significantly enhanced their knowledge and generative capabilities, leading to a surge of interest in leveraging LLMs for high-quality data synthesis. However, synthetic data…

Machine Learning · Computer Science 2025-06-11 Ying Zhou , Xinyao Wang , Yulei Niu , Yaojie Shen , Lexin Tang , Fan Chen , Ben He , Le Sun , Longyin Wen

Large Language Diffusion Models (LLDMs) exhibit comparable performance to LLMs while offering distinct advantages in inference speed and mathematical reasoning tasks.The precise and rapid generation capabilities of LLDMs amplify concerns of…

Computation and Language · Computer Science 2025-07-28 Yuanhe Zhang , Fangzhou Xie , Zhenhong Zhou , Zherui Li , Hao Chen , Kun Wang , Yufei Guo

While most autoregressive LLMs are constrained to one-by-one decoding, diffusion LLMs (dLLMs) have attracted growing interest for their potential to dramatically accelerate inference through parallel decoding. Despite this promise, the…

One of the critical phases in software development is software testing. Testing helps with identifying potential bugs and reducing maintenance costs. The goal of automated test generation tools is to ease the development of tests by…

Software Engineering · Computer Science 2023-09-01 Arghavan Moradi Dakhel , Amin Nikanjam , Vahid Majdinasab , Foutse Khomh , Michel C. Desmarais

Diffusion models, emerging as powerful deep generative tools, excel in various applications. They operate through a two-steps process: introducing noise into training samples and then employing a model to convert random noise into new…

Computer Vision and Pattern Recognition · Computer Science 2026-02-13 Huijie Zhang , Yifu Lu , Ismail Alkhouri , Saiprasad Ravishankar , Dogyoon Song , Qing Qu

Large language models (LLMs) and autonomous coding agents are increasingly used to generate software across a wide range of domains. Yet a core requirement remains unmet: ensuring that generated code is secure without compromising its…

Software Engineering · Computer Science 2025-11-27 Abhijeet Pathak , Suvadra Barua , Dinesh Gudimetla , Rupam Patir , Jiawei Guo , Hongxin Hu , Haipeng Cai

Masked Diffusion Models (MDMs) offer a promising alternative to autoregressive language models by enabling parallel token generation and bidirectional context modeling. However, their inference speed is significantly limited by the…

Machine Learning · Computer Science 2026-04-08 Satyam Goyal , Kushal Patel , Tanush Mittal , Arjun Laxman

Unit testing is essential for software quality assurance, yet writing and maintaining tests remains time-consuming and error-prone. To address this challenge, researchers have proposed various techniques for automating unit test generation,…

Software Engineering · Computer Science 2025-10-14 Dianshu Liao , Xin Yin , Shidong Pan , Chao Ni , Zhenchang Xing , Xiaoyu Sun

Current autoregressive language models (ARMs) achieve high accuracy but require long token sequences, making them costly. Discrete diffusion language models (DDLMs) enable parallel and flexible generation within a fixed number of steps and…

Computation and Language · Computer Science 2025-10-21 Lina Berrayana , Ahmed Heakl , Muhammad Abdullah Sohail , Thomas Hofmann , Salman Khan , Wei Chen