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Hate speech is one of the main threats posed by the widespread use of social networks, despite efforts to limit it. Although attention has been devoted to this issue, the lack of datasets and case studies centered around scarcely…

计算与语言 · 计算机科学 2024-10-11 Camilla Casula , Sara Tonelli

Counterfactual data augmentation (CDA) -- i.e., adding minimally perturbed inputs during training -- helps reduce model reliance on spurious correlations and improves generalization to out-of-distribution (OOD) data. Prior work on…

计算与语言 · 计算机科学 2022-11-02 Tanay Dixit , Bhargavi Paranjape , Hannaneh Hajishirzi , Luke Zettlemoyer

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 works in relation extraction (RE) have achieved promising benchmark accuracy; however, our adversarial attack experiments show that these works excessively rely on entities, making their generalization capability questionable. To…

计算与语言 · 计算机科学 2024-04-05 Dawei Li , William Hogan , Jingbo Shang

We propose a novel data augmentation for labeled sentences called contextual augmentation. We assume an invariance that sentences are natural even if the words in the sentences are replaced with other words with paradigmatic relations. We…

计算与语言 · 计算机科学 2018-05-17 Sosuke Kobayashi

Deep learning models have demonstrated superior performance in various healthcare applications. However, the major limitation of these deep models is usually the lack of high-quality training data due to the private and sensitive nature of…

计算与语言 · 计算机科学 2022-11-15 Qiuhao Lu , Dejing Dou , Thien Huu Nguyen

While retrieval-augmented generation (RAG) has been shown to enhance factuality of large language model (LLM) outputs, LLMs still suffer from hallucination, generating incorrect or irrelevant information. A common detection strategy…

计算与语言 · 计算机科学 2025-03-17 Tobias Leemann , Periklis Petridis , Giuseppe Vietri , Dionysis Manousakas , Aaron Roth , Sergul Aydore

Sentence embedding tasks are important in natural language processing (NLP), but improving their performance while keeping them reliable is still hard. This paper presents a framework that combines pseudo-label generation and model ensemble…

计算与语言 · 计算机科学 2025-01-28 Ziwei Liu , Qi Zhang , Lifu Gao

Span identification aims at identifying specific text spans from text input and classifying them into pre-defined categories. Different from previous works that merely leverage the Subordinate (SUB) relation (i.e. if a span is an instance…

计算与语言 · 计算机科学 2023-05-19 Weiwen Xu , Xin Li , Yang Deng , Wai Lam , Lidong Bing

Neural machine translation (NMT) has recently gained widespread attention because of its high translation accuracy. However, it shows poor performance in the translation of long sentences, which is a major issue in low-resource languages.…

计算与语言 · 计算机科学 2021-04-20 Seiichiro Kondo , Kengo Hotate , Masahiro Kaneko , Mamoru Komachi

The performance of relation extraction models has increased considerably with the rise of neural networks. However, a key issue of neural relation extraction is robustness: the models do not scale well to long sentences with multiple…

计算与语言 · 计算机科学 2021-04-23 Heike Adel , Jannik Strötgen

Data scarcity is one of the main obstacles of domain adaptation in spoken language understanding (SLU) due to the high cost of creating manually tagged SLU datasets. Recent works in neural text generative models, particularly latent…

计算与语言 · 计算机科学 2018-11-07 Kang Min Yoo , Youhyun Shin , Sang-goo Lee

While data augmentation is an important trick to boost the accuracy of deep learning methods in computer vision tasks, its study in natural language tasks is still very limited. In this paper, we present a novel data augmentation method for…

计算与语言 · 计算机科学 2019-05-28 Jinhua Zhu , Fei Gao , Lijun Wu , Yingce Xia , Tao Qin , Wengang Zhou , Xueqi Cheng , Tie-Yan Liu

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…

人工智能 · 计算机科学 2024-11-12 Yinggang Sun , Ziming Guo , Haining Yu , Chuanyi Liu , Xiang Li , Bingxuan Wang , Xiangzhan Yu , Tiancheng Zhao

Conventional approaches to relation extraction usually require a fixed set of pre-defined relations. Such requirement is hard to meet in many real applications, especially when new data and relations are emerging incessantly and it is…

计算与语言 · 计算机科学 2019-03-27 Hong Wang , Wenhan Xiong , Mo Yu , Xiaoxiao Guo , Shiyu Chang , William Yang Wang

Developing the capacity to effectively search for requisite datasets is an urgent requirement to assist data users in identifying relevant datasets considering the very limited available metadata. For this challenge, the utilization of…

信息检索 · 计算机科学 2024-10-08 Teruaki Hayashi , Hiroki Sakaji , Jiayi Dai , Randy Goebel

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

Augmentation of task-oriented dialogues has followed standard methods used for plain-text such as back-translation, word-level manipulation, and paraphrasing despite its richly annotated structure. In this work, we introduce an augmentation…

计算与语言 · 计算机科学 2022-03-23 Taha Aksu , Zhengyuan Liu , Min-Yen Kan , Nancy F. Chen

Existing research studies on cross-sentence relation extraction in long-form multi-party conversations aim to improve relation extraction without considering the explainability of such methods. This work addresses that gap by focusing on…

计算与语言 · 计算机科学 2022-10-20 Alon Albalak , Varun Embar , Yi-Lin Tuan , Lise Getoor , William Yang Wang

Training generative adversarial networks (GANs) with limited data is challenging because the discriminator is prone to overfitting. Previously proposed differentiable augmentation demonstrates improved data efficiency of training GANs.…

机器学习 · 计算机科学 2023-12-29 Liang Hou , Qi Cao , Yige Yuan , Songtao Zhao , Chongyang Ma , Siyuan Pan , Pengfei Wan , Zhongyuan Wang , Huawei Shen , Xueqi Cheng