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The growing number of pretrained models in Machine Learning (ML) presents significant challenges for practitioners. Given a new dataset, they need to determine the most suitable deep learning (DL) pipeline, consisting of the pretrained…

Machine Learning · Computer Science 2025-06-17 Fabio Ferreira

Data augmentation is gaining importance across various aspects of time series analysis, from forecasting to classification and anomaly detection tasks. We introduce the Latent Generative Transformer Augmentation (L-GTA) model, a generative…

Machine Learning · Computer Science 2025-08-01 Luis Roque , Carlos Soares , Vitor Cerqueira , Luis Torgo

Fine-tuning large language models (LLMs) for specific domain tasks has achieved great success in Text-to-SQL tasks. However, these fine-tuned models often face challenges with multi-turn Text-to-SQL tasks caused by ambiguous or unanswerable…

Artificial Intelligence · Computer Science 2024-11-12 Yinggang Sun , Ziming Guo , Haining Yu , Chuanyi Liu , Xiang Li , Bingxuan Wang , Xiangzhan Yu , Tiancheng Zhao

The use of deep learning for database optimization has gained significant traction, offering improvements in indexing, cardinality estimation, and query optimization. However, acquiring high-quality training data remains a significant…

Databases · Computer Science 2025-12-24 Angjela Davitkova , Sebastian Michel

Data augmentation as a technique can mitigate data scarcity in machine learning. However, owing to fundamental differences in wireless data structures, traditional data augmentation techniques may not be suitable for wireless data.…

Networking and Internet Architecture · Computer Science 2025-09-11 Jinbo Wen , Jiawen Kang , Dusit Niyato , Yang Zhang , Jiacheng Wang , Biplab Sikdar , Ping Zhang

Deep Learning (DL) methods have emerged as one of the most powerful tools for functional approximation and prediction. While the representation properties of DL have been well studied, uncertainty quantification remains challenging and…

Machine Learning · Statistics 2022-10-25 Yuexi Wang , Nicholas G. Polson , Vadim O. Sokolov

Data augmentation has recently seen increased interest in NLP due to more work in low-resource domains, new tasks, and the popularity of large-scale neural networks that require large amounts of training data. Despite this recent upsurge,…

Computation and Language · Computer Science 2021-12-03 Steven Y. Feng , Varun Gangal , Jason Wei , Sarath Chandar , Soroush Vosoughi , Teruko Mitamura , Eduard Hovy

While tabular data is fundamental to many real-world machine learning (ML) applications, acquiring high-quality tabular data is usually labor-intensive and expensive. Limited by the scarcity of observations, tabular datasets often exhibit…

Machine Learning · Computer Science 2026-02-05 Congjing Zhang , Ryan Feng Lin , Ruoxuan Bao , Shuai Huang

Data augmentation is a powerful technique to enhance the performance of a deep learning task but has received less attention in 3D deep learning. It is well known that when 3D shapes are sparsely represented with low point density, the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-23 Tuan-Anh Vu , Srinjay Sarkar , Zhiyuan Zhang , Binh-Son Hua , Sai-Kit Yeung

Data augmentation is often used to enlarge datasets with synthetic samples generated in accordance with the underlying data distribution. To enable a wider range of augmentations, we explore negative data augmentation strategies (NDA)that…

Computer Vision and Pattern Recognition · Computer Science 2021-02-11 Abhishek Sinha , Kumar Ayush , Jiaming Song , Burak Uzkent , Hongxia Jin , Stefano Ermon

Despite the recent progress in speech emotion recognition (SER), state-of-the-art systems lack generalisation across different conditions. A key underlying reason for poor generalisation is the scarcity of emotion datasets, which is a…

Sound · Computer Science 2022-07-13 Siddique Latif , Rajib Rana , Sara Khalifa , Raja Jurdak , Björn W. Schuller

Data augmentation (DA) is crucial to mitigate model training instability and over-fitting problems in low-resource open-domain dialogue generation. However, traditional DA methods often neglect semantic data diversity, restricting the…

Computation and Language · Computer Science 2024-04-02 Zhenhua Liu , Tong Zhu , Jianxiang Xiang , Wenliang Chen

As privacy regulations become more stringent and access to real-world data becomes increasingly constrained, synthetic data generation has emerged as a vital solution, especially for tabular datasets, which are central to domains like…

Machine Learning · Computer Science 2025-07-17 Raju Challagundla , Mohsen Dorodchi , Pu Wang , Minwoo Lee

Utilizing tools with Large Language Models (LLMs) is essential for grounding AI agents in real-world applications. The prevailing approach involves few-shot prompting with demonstrations or fine-tuning with expert annotations. However, mere…

Computation and Language · Computer Science 2024-10-10 Xiaohan Wang , Dian Li , Yilin Zhao , Sinbadliu , Hui Wang

Recently, data augmentation (DA) methods have been proven to be effective for pre-trained language models (PLMs) in low-resource settings, including few-shot named entity recognition (NER). However, conventional NER DA methods are mostly…

Computation and Language · Computer Science 2023-05-22 Huiming Wang , Liying Cheng , Wenxuan Zhang , De Wen Soh , Lidong Bing

Data Augmentation (DA) is known to improve the generalizability of deep neural networks. Most existing DA techniques naively add a certain number of augmented samples without considering the quality and the added computational cost of these…

Machine Learning · Computer Science 2022-03-18 Ehsan Kamalloo , Mehdi Rezagholizadeh , Ali Ghodsi

The vast advances in Machine Learning over the last ten years have been powered by the availability of suitably prepared data for training purposes. The future of ML-enabled enterprise hinges on data. As such, there is already a vibrant…

Databases · Computer Science 2021-06-02 Yifan Li , Xiaohui Yu , Nick Koudas

Data augmentation is widely known as a simple yet surprisingly effective technique for regularizing deep networks. Conventional data augmentation schemes, e.g., flipping, translation or rotation, are low-level, data-independent and…

Computer Vision and Pattern Recognition · Computer Science 2021-06-07 Yulin Wang , Gao Huang , Shiji Song , Xuran Pan , Yitong Xia , Cheng Wu

Existing dialogue data augmentation (DA) techniques predominantly focus on augmenting utterance-level dialogues, which makes it difficult to take dialogue contextual information into account. The advent of large language models (LLMs) has…

Computation and Language · Computer Science 2024-06-25 Jiyue Jiang , Liheng Chen , Sheng Wang , Lingpeng Kong , Yu Li , Chuan Wu

As a modern ensemble technique, Deep Forest (DF) employs a cascading structure to construct deep models, providing stronger representational power compared to traditional decision forests. However, its greedy multi-layer learning procedure…

Machine Learning · Computer Science 2023-09-19 Hongyu Zhu , Sichu Liang , Wentao Hu , Fang-Qi Li , Yali yuan , Shi-Lin Wang , Guang Cheng