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Pre-trained models have been shown effective in many code intelligence tasks. These models are pre-trained on large-scale unlabeled corpus and then fine-tuned in downstream tasks. However, as the inputs to pre-training and downstream tasks…

Software Engineering · Computer Science 2022-07-26 Chaozheng Wang , Yuanhang Yang , Cuiyun Gao , Yun Peng , Hongyu Zhang , Michael R. Lyu

Recent years have seen the successful application of deep learning to software engineering (SE). In particular, the development and use of pre-trained models of source code has enabled state-of-the-art results to be achieved on a wide…

Software Engineering · Computer Science 2022-05-25 Changan Niu , Chuanyi Li , Bin Luo , Vincent Ng

Recent work has demonstrated that controlled pretraining experiments are a powerful tool for studying the relationship between training data and large language model (LLM) behavior. However, the computational cost of pretraining presents a…

Computation and Language · Computer Science 2026-03-03 Sebastian Bordt , Martin Pawelczyk

Numerous code changes are made by developers in their daily work, and a superior representation of code changes is desired for effective code change analysis. Recently, Hoang et al. proposed CC2Vec, a neural network-based approach that…

Software Engineering · Computer Science 2023-09-28 Xin Zhou , Bowen Xu , DongGyun Han , Zhou Yang , Junda He , David Lo

This paper provides a starting point for Software Engineering (SE) researchers and practitioners faced with the problem of training machine learning models on small datasets. Due to the high costs associated with labeling data, in Software…

Software Engineering · Computer Science 2021-06-30 Julian Aron Prenner , Romain Robbes

Pre-trained encoder-decoder transformer architectures have become increasingly popular recently with the advent of T5 models. T5 has also become more favorable over other architectures like BERT due to the amount of data that it is…

Computation and Language · Computer Science 2022-10-25 Frederick Liu , Terry Huang , Shihang Lyu , Siamak Shakeri , Hongkun Yu , Jing Li

Continual learning aims to enable models to adapt to new datasets without losing performance on previously learned data, often assuming that prior data is no longer available. However, in many practical scenarios, both old and new data are…

Machine Learning · Computer Science 2025-03-03 Eli Verwimp , Guy Hacohen , Tinne Tuytelaars

Pre-trained models of source code have recently been successfully applied to a wide variety of Software Engineering tasks; they have also seen some practical adoption in practice, e.g. for code completion. Yet, we still know very little…

Software Engineering · Computer Science 2023-12-11 Anjan Karmakar , Romain Robbes

Pre-trained models of code built on the transformer architecture have performed well on software engineering (SE) tasks such as predictive code generation, code summarization, among others. However, whether the vector representations from…

Software Engineering · Computer Science 2021-08-26 Anjan Karmakar , Romain Robbes

Code generation aims to automatically generate code snippets of specific programming language according to natural language descriptions. The continuous advancements in deep learning, particularly pre-trained models, have empowered the code…

Software Engineering · Computer Science 2025-01-24 Zezhou Yang , Sirong Chen , Cuiyun Gao , Zhenhao Li , Xing Hu , Kui Liu , Xin Xia

Pre-trained code models have emerged as crucial tools in various code intelligence tasks. However, their effectiveness depends on the quality of the pre-training dataset, particularly the human reference comments, which serve as a bridge…

Software Engineering · Computer Science 2023-12-27 Kang Yang , Xinjun Mao , Shangwen Wang , Tanghaoran Zhang , Bo Lin , Yanlin Wang , Yihao Qin , Zhang Zhang , Xiaoguang Mao

Developers deal with code-change-related tasks daily, e.g., reviewing code. Pre-trained code and code-change-oriented models have been adapted to help developers with such tasks. Recently, large language models (LLMs) have shown their…

Software Engineering · Computer Science 2024-07-04 Lishui Fan , Jiakun Liu , Zhongxin Liu , David Lo , Xin Xia , Shanping Li

Vulnerability analysis is crucial for software security. This work focuses on using pre-training techniques to enhance the understanding of vulnerable code and boost vulnerability analysis. The code understanding ability of a pre-trained…

Software Engineering · Computer Science 2024-02-02 Zhongxin Liu , Zhijie Tang , Junwei Zhang , Xin Xia , Xiaohu Yang

Applying machine learning to tasks that operate with code changes requires their numerical representation. In this work, we propose an approach for obtaining such representations during pre-training and evaluate them on two different…

Software Engineering · Computer Science 2021-07-12 Mikhail Pravilov , Egor Bogomolov , Yaroslav Golubev , Timofey Bryksin

Representing code changes as numeric feature vectors, i.e., code change representations, is usually an essential step to automate many software engineering tasks related to code changes, e.g., commit message generation and just-in-time…

Software Engineering · Computer Science 2023-02-09 Zhongxin Liu , Zhijie Tang , Xin Xia , Xiaohu Yang

Pretrained models of code, such as CodeBERT and CodeT5, have become popular choices for code understanding and generation tasks. Such models tend to be large and require commensurate volumes of training data, which are rarely available for…

Machine Learning · Computer Science 2024-01-23 Kamel Alrashedy , Vincent J. Hellendoorn , Alessandro Orso

Transformers have gained popularity in the software engineering (SE) literature. These deep learning models are usually pre-trained through a self-supervised objective, meant to provide the model with basic knowledge about a language of…

Software Engineering · Computer Science 2023-02-09 Rosalia Tufano , Luca Pascarella , Gabriele Bavota

Continual Pre-Training (CPT) has become a popular and effective method to apply strong foundation models to specific downstream tasks. In this work, we explore the learning dynamics throughout the CPT process for large language models. We…

Computation and Language · Computer Science 2025-06-23 Xingjin Wang , Howe Tissue , Lu Wang , Linjing Li , Daniel Dajun Zeng

Large-scale pre-trained models such as CodeBERT, GraphCodeBERT have earned widespread attention from both academia and industry. Attributed to the superior ability in code representation, they have been further applied in multiple…

Software Engineering · Computer Science 2023-01-24 Shangqing Liu , Bozhi Wu , Xiaofei Xie , Guozhu Meng , Yang Liu

Recent studies have adopted pre-trained language models, such as CodeT5 and CodeGPT, for automated program generation tasks like code generation, repair, and translation. Numerous language model-based approaches have been proposed and…

Software Engineering · Computer Science 2024-01-09 Yue Liu , Chakkrit Tantithamthavorn , Yonghui Liu , Li Li