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Data augmentation techniques have been used to alleviate the problem of scarce labeled data in various NER tasks (flat, nested, and discontinuous NER tasks). Existing augmentation techniques either manipulate the words in the original text…

计算与语言 · 计算机科学 2023-05-29 Xuming Hu , Yong Jiang , Aiwei Liu , Zhongqiang Huang , Pengjun Xie , Fei Huang , Lijie Wen , Philip S. Yu

Monolingual data have been demonstrated to be helpful in improving translation quality of both statistical machine translation (SMT) systems and neural machine translation (NMT) systems, especially in resource-poor or domain adaptation…

计算与语言 · 计算机科学 2018-03-02 Zhirui Zhang , Shujie Liu , Mu Li , Ming Zhou , Enhong Chen

Text augmentation is a technique for constructing synthetic data from an under-resourced corpus to improve predictive performance. Synthetic data generation is common in numerous domains. However, recently text augmentation has emerged in…

计算与语言 · 计算机科学 2023-09-12 Mosleh Mahamud , Zed Lee , Isak Samsten

This work introduces the novel task of Source-free Multi-target Domain Adaptation and proposes adaptation framework comprising of \textbf{Co}nsistency with \textbf{N}uclear-Norm Maximization and \textbf{Mix}Up knowledge distillation…

机器学习 · 计算机科学 2022-11-09 Vikash Kumar , Rohit Lal , Himanshu Patil , Anirban Chakraborty

Large multimodal models (LMMs) often struggle to recognize novel concepts, as they rely on pre-trained knowledge and have limited ability to capture subtle visual details. Domain-specific knowledge gaps in training also make them prone to…

计算机视觉与模式识别 · 计算机科学 2025-06-06 Yu Zhou , Bingxuan Li , Mohan Tang , Xiaomeng Jin , Te-Lin Wu , Kuan-Hao Huang , Heng Ji , Kai-Wei Chang , Nanyun Peng

In Multimodal Language Models (MLMs), the cost of manually annotating high-quality image-text pair data for fine-tuning and alignment is extremely high. While existing multimodal data augmentation frameworks propose ways to augment…

人工智能 · 计算机科学 2024-08-20 Xiaomeng Jin , Jeonghwan Kim , Yu Zhou , Kuan-Hao Huang , Te-Lin Wu , Nanyun Peng , Heng Ji

The ability of generative language models (GLMs) to generate text has improved considerably in the last few years, enabling their use for generative data augmentation. In this work, we propose CONDA, an approach to further improve GLMs'…

计算与语言 · 计算机科学 2022-10-26 Dheeraj Mekala , Tu Vu , Timo Schick , Jingbo Shang

While Large Language Models (LLMs) acquire vast knowledge during pre-training, they often lack domain-specific, new, or niche information. Continual pre-training (CPT) attempts to address this gap but suffers from catastrophic forgetting…

计算与语言 · 计算机科学 2025-04-09 Oded Ovadia , Meni Brief , Rachel Lemberg , Eitam Sheetrit

Despite the impressive capabilities of large language models (LLMs), their performance on information extraction tasks is still not entirely satisfactory. However, their remarkable rewriting capabilities and extensive world knowledge offer…

计算与语言 · 计算机科学 2024-02-23 Junjie Ye , Nuo Xu , Yikun Wang , Jie Zhou , Qi Zhang , Tao Gui , Xuanjing Huang

Creating effective and reliable task-oriented dialog systems (ToDSs) is challenging, not only because of the complex structure of these systems, but also due to the scarcity of training data, especially when several modules need to be…

计算与语言 · 计算机科学 2024-06-11 Christos Vlachos , Themos Stafylakis , Ion Androutsopoulos

Recent studies in prompting large language model (LLM) for document-level machine translation (DMT) primarily focus on the inter-sentence context by flatting the source document into a long sequence. This approach relies solely on the…

计算与语言 · 计算机科学 2025-03-18 Bin Liu , Xinglin Lyu , Junhui Li , Daimeng Wei , Min Zhang , Shimin Tao , Hao Yang

In this paper,we explore the application of Back translation (BT) as a semi-supervised technique to enhance Neural Machine Translation(NMT) models for the English-Luganda language pair, specifically addressing the challenges faced by…

计算与语言 · 计算机科学 2025-05-06 Richard Kimera , Dongnyeong Heo , Daniela N. Rim , Heeyoul Choi

Most previous methods for text data augmentation are limited to simple tasks and weak baselines. We explore data augmentation on hard tasks (i.e., few-shot natural language understanding) and strong baselines (i.e., pretrained models with…

计算与语言 · 计算机科学 2022-03-16 Jing Zhou , Yanan Zheng , Jie Tang , Jian Li , Zhilin Yang

Tutoring is an effective instructional method for enhancing student learning, yet its success relies on the skill and experience of the tutors. This reliance presents challenges for the widespread implementation of tutoring, particularly in…

人机交互 · 计算机科学 2025-10-21 Chentianye Xu , Jionghao Lin , Tongshuang Wu , Vincent Aleven , Kenneth R. Koedinger

Knowledge tracing (KT) aims to estimate student's knowledge mastery based on their historical interactions. Recently, the deep learning based KT (DLKT) approaches have achieved impressive performance in the KT task. These DLKT models…

计算机与社会 · 计算机科学 2024-10-28 Hengyuan Zhang , Zitao Liu , Shuyan Huang , Chenming Shang , Bojun Zhan , Yong Jiang

Recent advances in large language model (LLM) training have highlighted the need for diverse, high-quality instruction data. Recently, many works are exploring synthetic data generation using LLMs. However, they primarily focus on prompt…

计算与语言 · 计算机科学 2024-12-10 Yifang Chen , David Zhu , Simon Du , Kevin Jamieson , Yang Liu

Mixup is the latest data augmentation technique that linearly interpolates input examples and the corresponding labels. It has shown strong effectiveness in image classification by interpolating images at the pixel level. Inspired by this…

计算与语言 · 计算机科学 2020-11-12 Lichao Sun , Congying Xia , Wenpeng Yin , Tingting Liang , Philip S. Yu , Lifang He

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,…

计算与语言 · 计算机科学 2021-12-03 Steven Y. Feng , Varun Gangal , Jason Wei , Sarath Chandar , Soroush Vosoughi , Teruko Mitamura , Eduard Hovy

Despite their success at many natural language processing (NLP) tasks, large language models still struggle to effectively leverage knowledge for knowledge-intensive tasks, manifesting limitations such as generating incomplete, non-factual,…

计算与语言 · 计算机科学 2024-10-03 Yougang Lyu , Lingyong Yan , Shuaiqiang Wang , Haibo Shi , Dawei Yin , Pengjie Ren , Zhumin Chen , Maarten de Rijke , Zhaochun Ren

For many new application domains for data-to-text generation, the main obstacle in training neural models consists of a lack of training data. While usually large numbers of instances are available on the data side, often only very few text…

计算与语言 · 计算机科学 2021-02-09 Ernie Chang , Xiaoyu Shen , Dawei Zhu , Vera Demberg , Hui Su