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Offline reinforcement learning (RL) enables policy learning from pre-collected offline datasets, relaxing the need to interact directly with the environment. However, limited by the quality of offline datasets, it generally fails to learn…

机器学习 · 计算机科学 2025-09-03 Xingshuai Huang , Di Wu , Benoit Boulet

Data augmentation has been demonstrated as an effective strategy for improving model generalization and data efficiency. However, due to the discrete nature of natural language, designing label-preserving transformations for text data tends…

计算与语言 · 计算机科学 2020-10-20 Yanru Qu , Dinghan Shen , Yelong Shen , Sandra Sajeev , Jiawei Han , Weizhu Chen

We propose a simple yet novel data augmentation method for general data modalities based on energy-based modeling and principles from information geometry. Unlike most existing learning-based data augmentation methods, which rely on…

机器学习 · 计算机科学 2026-01-28 Pingbang Hu , Mahito Sugiyama

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

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…

计算与语言 · 计算机科学 2024-04-02 Zhenhua Liu , Tong Zhu , Jianxiang Xiang , Wenliang Chen

In the context of neural machine translation, data augmentation (DA) techniques may be used for generating additional training samples when the available parallel data are scarce. Many DA approaches aim at expanding the support of the…

Large language models (LLMs) have achieved substantial advances in logical reasoning, yet they continue to lag behind human-level performance. In-context learning provides a viable solution that boosts the model's performance via prompting…

人工智能 · 计算机科学 2026-04-22 Jianzhi Yan , Le Liu , Buzhou Tang , Yang Xiang , Dongning Sun , Zhiming Li

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

Data augmentation (DA) aims to generate constrained and diversified data to improve classifiers in Low-Resource Classification (LRC). Previous studies mostly use a fine-tuned Language Model (LM) to strengthen the constraints but ignore the…

计算与语言 · 计算机科学 2021-09-27 Guang Liu , Hailong Huang , Yuzhao Mao , Weiguo Gao , Xuan Li , Jianping Shen

As an effective strategy, data augmentation (DA) alleviates data scarcity scenarios where deep learning techniques may fail. It is widely applied in computer vision then introduced to natural language processing and achieves improvements in…

计算与语言 · 计算机科学 2022-06-28 Bohan Li , Yutai Hou , Wanxiang Che

Data augmentation is an essential technique in natural language processing (NLP) for enriching training datasets by generating diverse samples. This process is crucial for improving the robustness and generalization capabilities of NLP…

计算与语言 · 计算机科学 2025-10-16 Zaitian Wang , Jinghan Zhang , Xinhao Zhang , Kunpeng Liu , Pengfei Wang , Yuanchun Zhou

Large Language Models (LLMs) are increasingly used to generate synthetic textual data for training smaller specialized models. However, a comparison of various generation strategies for low-resource language settings is lacking. While…

计算与语言 · 计算机科学 2025-09-22 Tatiana Anikina , Jan Cegin , Jakub Simko , Simon Ostermann

Recent studies have demonstrated remarkable advancements in source code learning, which applies deep neural networks (DNNs) to tackle various software engineering tasks. Similar to other DNN-based domains, source code learning also requires…

软件工程 · 计算机科学 2025-02-07 Zeming Dong , Qiang Hu , Yuejun Guo , Zhenya Zhang , Maxime Cordy , Mike Papadakis , Yves Le Traon , Jianjun Zhao

Coherence evaluation aims to assess the organization and structure of a discourse, which remains challenging even in the era of large language models. Due to the scarcity of annotated data, data augmentation is commonly used for training…

计算与语言 · 计算机科学 2024-04-02 Dawei Zhu , Wenhao Wu , Yifan Song , Fangwei Zhu , Ziqiang Cao , Sujian Li

Recent advances in large pre-trained language models (PLMs) lead to impressive gains in natural language understanding (NLU) tasks with task-specific fine-tuning. However, directly fine-tuning PLMs heavily relies on sufficient labeled…

计算与语言 · 计算机科学 2023-03-24 Canyu Chen , Kai Shu

Based on recent advances in natural language modeling and those in text generation capabilities, we propose a novel data augmentation method for text classification tasks. We use a powerful pre-trained neural network model to artificially…

Paraphrase generation is a longstanding NLP task and achieves great success with the aid of large corpora. However, transferring a paraphrasing model to another domain encounters the problem of domain shifting especially when the data is…

计算与语言 · 计算机科学 2025-11-10 Zhigen Li , Yanmeng Wang , Rizhao Fan , Ye Wang , Jianfeng Li , Shaojun Wang

Prevailing Dataset Distillation (DD) methods leveraging generative models confront two fundamental limitations. First, despite pioneering the use of diffusion models in DD and delivering impressive performance, the vast majority of…

计算机视觉与模式识别 · 计算机科学 2025-12-04 Letian Zhou , Songhua Liu , Xinchao Wang

The programming skill is one crucial ability for Large Language Models (LLMs), necessitating a deep understanding of programming languages (PLs) and their correlation with natural languages (NLs). We examine the impact of pre-training data…

计算与语言 · 计算机科学 2024-02-21 Demin Song , Honglin Guo , Yunhua Zhou , Shuhao Xing , Yudong Wang , Zifan Song , Wenwei Zhang , Qipeng Guo , Hang Yan , Xipeng Qiu , Dahua Lin

Addressing the challenge of low-resource information extraction remains an ongoing issue due to the inherent information scarcity within limited training examples. Existing data augmentation methods, considered potential solutions, struggle…

计算与语言 · 计算机科学 2024-05-15 Sijia Wang , Lifu Huang