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Data augmentation techniques have been widely used to improve machine learning performance as they enhance the generalization capability of models. In this work, to generate high quality synthetic data for low-resource tagging tasks, we…

计算与语言 · 计算机科学 2020-11-04 Bosheng Ding , Linlin Liu , Lidong Bing , Canasai Kruengkrai , Thien Hai Nguyen , Shafiq Joty , Luo Si , Chunyan Miao

Reinforcement learning has recently shown promise in improving retrieval-augmented generation (RAG). Despite these advances, its effectiveness in multi-hop question answering (QA) remains limited by two fundamental limitations: (i) global…

计算与语言 · 计算机科学 2026-03-17 Jinchang Luo , Mingquan Cheng , Fan Wan , Ni Li , Xiaoling Xia , Shuangshuang Tian , Tingcheng Bian , Haiwei Wang , Haohuan Fu , Yan Tao

As one of the most effective self-supervised representation learning methods, contrastive learning (CL) relies on multiple negative pairs to contrast against each positive pair. In the standard practice of contrastive learning, data…

机器学习 · 计算机科学 2024-01-18 Lu Wang , Chao Du , Pu Zhao , Chuan Luo , Zhangchi Zhu , Bo Qiao , Wei Zhang , Qingwei Lin , Saravan Rajmohan , Dongmei Zhang , Qi Zhang

Industrial advertising question answering (QA) is a high-stakes task in which hallucinated content, particularly fabricated URLs, can lead to financial loss, compliance violations, and legal risk. Although Retrieval-Augmented Generation…

计算与语言 · 计算机科学 2026-02-27 Wenwei Li , Ming Xu , Tianle Xia , Lingxiang Hu , Yiding Sun , Linfang Shang , Liqun Liu , Peng Shu , Huan Yu , Jie Jiang

This paper presents a simple and cost-effective method for synthesizing data to train question-answering systems. For training, fine-tuning GPT models is a common practice in resource-rich languages like English, however, it becomes…

计算与语言 · 计算机科学 2023-10-16 Kosuke Takahashi , Takahiro Omi , Kosuke Arima , Tatsuya Ishigaki

Speech models may be affected by performance imbalance in different population subgroups, raising concerns about fair treatment across these groups. Prior attempts to mitigate unfairness either focus on user-defined subgroups, potentially…

计算与语言 · 计算机科学 2024-09-17 Alkis Koudounas , Flavio Giobergia , Eliana Pastor , Elena Baralis

This paper proposes an approach to cross-language sentence selection in a low-resource setting. It uses data augmentation and negative sampling techniques on noisy parallel sentence data to directly learn a cross-lingual embedding-based…

计算与语言 · 计算机科学 2021-06-07 Yanda Chen , Chris Kedzie , Suraj Nair , Petra Galuščáková , Rui Zhang , Douglas W. Oard , Kathleen McKeown

Generative data augmentation, which scales datasets by obtaining fake labeled examples from a trained conditional generative model, boosts classification performance in various learning tasks including (semi-)supervised learning, few-shot…

机器学习 · 计算机科学 2023-05-30 Chenyu Zheng , Guoqiang Wu , Chongxuan Li

Research on data generation and augmentation has been focused majorly on enhancing generation models, leaving a notable gap in the exploration and refinement of methods for evaluating synthetic data. There are several text similarity…

计算与语言 · 计算机科学 2023-11-09 Tiasa Singha Roy , Priyam Basu

Large Language Models (LLMs) are prone to generating factually incorrect information when responding to queries that involve numerical and statistical data or other timely facts. In this paper, we present an approach for enhancing the…

计算与语言 · 计算机科学 2024-09-24 Prashanth Radhakrishnan , Jennifer Chen , Bo Xu , Prem Ramaswami , Hannah Pho , Adriana Olmos , James Manyika , R. V. Guha

Contrastive learning has been used to learn a high-quality representation of the image in computer vision. However, contrastive learning is not widely utilized in natural language processing due to the lack of a general method of data…

计算与语言 · 计算机科学 2021-04-29 Peng Su , Yifan Peng , K. Vijay-Shanker

Deep learning models often learn and exploit spurious correlations in training data, using these non-target features to inform their predictions. Such reliance leads to performance degradation and poor generalization on unseen data. To…

计算与语言 · 计算机科学 2025-11-21 Kyohoon Jin , Juhwan Choi , Jungmin Yun , Junho Lee , Soojin Jang , Youngbin Kim

In this work we introduce a novel approach to train Bidirectional Generative Adversarial Model (BiGAN) in a semi-supervised manner. The presented method utilizes triplet loss function as an additional component of the objective function…

机器学习 · 计算机科学 2019-05-01 Maciej Zamorski , Maciej Zięba

Supervised learning can improve the design of state-of-the-art solvers for combinatorial problems, but labelling large numbers of combinatorial instances is often impractical due to exponential worst-case complexity. Inspired by the recent…

机器学习 · 计算机科学 2022-06-22 Haonan Duan , Pashootan Vaezipoor , Max B. Paulus , Yangjun Ruan , Chris J. Maddison

Ranking consistently emerges as a primary focus in information retrieval research. Retrieval and ranking models serve as the foundation for numerous applications, including web search, open domain QA, enterprise domain QA, and text-based…

信息检索 · 计算机科学 2024-12-16 Hansa Meghwani

This paper addresses the persistent challenge in Keyword Spotting (KWS), a fundamental component in speech technology, regarding the acquisition of substantial labeled data for training. Given the difficulty in obtaining large quantities of…

声音 · 计算机科学 2024-09-04 Weinan Dai , Yifeng Jiang , Yuanjing Liu , Jinkun Chen , Xin Sun , Jinglei Tao

Previous deep learning approaches for survival analysis have primarily relied on ranking losses to improve discrimination performance, which often comes at the expense of calibration performance. To address such an issue, we propose a novel…

机器学习 · 计算机科学 2024-11-22 Dongjoon Lee , Hyeryn Park , Changhee Lee

Scaling laws dictate that the performance of AI models is proportional to the amount of available data. Data augmentation is a promising solution to expanding the dataset size. Traditional approaches focused on augmentation using rotation,…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Fazle Rahat , M Shifat Hossain , Md Rubel Ahmed , Sumit Kumar Jha , Rickard Ewetz

Retrieval-Augmented Generation (RAG), which integrates external knowledge into Large Language Models (LLMs), has proven effective in enabling LLMs to produce more accurate and reliable responses. However, it remains a significant challenge…

计算与语言 · 计算机科学 2025-02-11 Yan Weng , Fengbin Zhu , Tong Ye , Haoyan Liu , Fuli Feng , Tat-Seng Chua

Synthetic data augmentation helps language models learn new knowledge in data-constrained domains. However, naively scaling existing synthetic data methods by training on more synthetic tokens or using stronger generators yields diminishing…

机器学习 · 计算机科学 2026-03-31 Seungju Han , Konwoo Kim , Chanwoo Park , Benjamin Newman , Suhas Kotha , Jaehun Jung , James Zou , Yejin Choi