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Low-frequency word prediction remains a challenge in modern neural machine translation (NMT) systems. Recent adaptive training methods promote the output of infrequent words by emphasizing their weights in the overall training objectives.…

计算与语言 · 计算机科学 2021-12-30 Tong Zhang , Wei Ye , Baosong Yang , Long Zhang , Xingzhang Ren , Dayiheng Liu , Jinan Sun , Shikun Zhang , Haibo Zhang , Wen Zhao

To improve the detection accuracy and generalization of steganalysis, this paper proposes the Steganalysis Contrastive Framework (SCF) based on contrastive learning. The SCF improves the feature representation of steganalysis by maximizing…

人工智能 · 计算机科学 2021-03-02 Yanzhen Ren , Yiwen Liu , Lina Wang

Whole slide images (WSI) provide valuable phenotypic information for histological assessment and malignancy grading of tumors. The WSI-based grading promises to provide rapid diagnostic support and facilitate digital health. Currently, the…

图像与视频处理 · 电气工程与系统科学 2022-10-05 Lipei Zhang , Yiran Wei , Ying Fu , Stephen Price , Carola-Bibiane Schönlieb , Chao Li

Machine unlearning, the efficient deletion of the impact of specific data in a trained model, remains a challenging problem. Current machine unlearning approaches that focus primarily on data-centric or weight-based strategies frequently…

机器学习 · 计算机科学 2025-08-07 Thang Duc Tran , Thai Hoang Le

Emotion recognition in conversations (ERC) is a rapidly evolving task within the natural language processing community, which aims to detect the emotions expressed by speakers during a conversation. Recently, a growing number of ERC methods…

计算与语言 · 计算机科学 2023-12-12 Tao Shi , Xiao Liang , Yaoyuan Liang , Xinyi Tong , Shao-Lun Huang

Classifying fine-grained lesions is challenging due to minor and subtle differences in medical images. This is because learning features of fine-grained lesions with highly minor differences is very difficult in training deep neural…

计算机视觉与模式识别 · 计算机科学 2023-08-14 Wongi Park , Jongbin Ryu

Multivariate Time-Series (MTS) clustering is crucial for signal processing and data analysis. Although deep learning approaches, particularly those leveraging Contrastive Learning (CL), are prominent for MTS representation, existing…

机器学习 · 计算机科学 2026-01-13 Zexi Tan , Tao Xie , Haoyi Xiao , Baoyao Yang , Yuzhu Ji , An Zeng , Xiang Zhang , Yiqun Zhang

A two-stage training paradigm consisting of sequential pre-training and meta-training stages has been widely used in current few-shot learning (FSL) research. Many of these methods use self-supervised learning and contrastive learning to…

计算机视觉与模式识别 · 计算机科学 2022-09-20 Zhanyuan Yang , Jinghua Wang , Yingying Zhu

Contrastive learning allows us to flexibly define powerful losses by contrasting positive pairs from sets of negative samples. Recently, the principle has also been used to learn cross-modal embeddings for video and text, yet without…

计算机视觉与模式识别 · 计算机科学 2021-10-01 Mohammadreza Zolfaghari , Yi Zhu , Peter Gehler , Thomas Brox

Tensor-based multi-view clustering has recently received significant attention due to its exceptional ability to explore cross-view high-order correlations. However, most existing methods still encounter some limitations. (1) Most of them…

计算机视觉与模式识别 · 计算机科学 2024-11-13 Deng Xu , Chao Zhang , Zechao Li , Chunlin Chen , Huaxiong Li

Cross-language pre-trained models such as multilingual BERT (mBERT) have achieved significant performance in various cross-lingual downstream NLP tasks. This paper proposes a multi-level contrastive learning (ML-CTL) framework to further…

计算与语言 · 计算机科学 2022-03-01 Beiduo Chen , Wu Guo , Bin Gu , Quan Liu , Yongchao Wang

Spoken language understanding (SLU) is a core task in task-oriented dialogue systems, which aims at understanding the user's current goal through constructing semantic frames. SLU usually consists of two subtasks, including intent detection…

计算与语言 · 计算机科学 2024-06-03 Xuxin Cheng , Wanshi Xu , Zhihong Zhu , Hongxiang Li , Yuexian Zou

Recent studies of large-scale contrastive pretraining in the text embedding domain show that using single-source minibatches, rather than mixed-source minibatches, can substantially improve overall model accuracy. In this work, we explore…

机器学习 · 计算机科学 2024-07-29 Luke Merrick

In this work, we present Multi-Level Contrastive Learning for Dense Prediction Task (MCL), an efficient self-supervised method for learning region-level feature representation for dense prediction tasks. Our method is motivated by the three…

计算机视觉与模式识别 · 计算机科学 2023-04-05 Qiushan Guo , Yizhou Yu , Yi Jiang , Jiannan Wu , Zehuan Yuan , Ping Luo

Multimodal sarcasm detection (MSD) is essential for various downstream tasks. Existing MSD methods tend to rely on spurious correlations. These methods often mistakenly prioritize non-essential features yet still make correct predictions,…

计算与语言 · 计算机科学 2024-12-10 Diandian Guo , Cong Cao , Fangfang Yuan , Yanbing Liu , Guangjie Zeng , Xiaoyan Yu , Hao Peng , Philip S. Yu

Chinese grammatical error correction (CGEC) aims to detect and correct errors in the input Chinese sentences. Recently, Pre-trained Language Models (PLMS) have been employed to improve the performance. However, current approaches ignore…

计算与语言 · 计算机科学 2025-01-03 Ding Zhang , Yangning Li , Lichen Bai , Hao Zhang , Yinghui Li , Haiye Lin , Hai-Tao Zheng , Xin Su , Zifei Shan

Sound event detection (SED) often suffers from the data deficiency problem. The recent baseline system in the DCASE2023 challenge task 4 leverages the large pretrained self-supervised learning (SelfSL) models to mitigate such restriction,…

音频与语音处理 · 电气工程与系统科学 2024-01-01 Nian Shao , Xian Li , Xiaofei Li

Recent research in self-supervised learning (SSL) has shown its capability in learning useful semantic representations from images for classification tasks. Through our work, we study the usefulness of SSL for Fine-Grained Visual…

计算机视觉与模式识别 · 计算机科学 2021-05-20 Muhammad Maaz , Hanoona Abdul Rasheed , Dhanalaxmi Gaddam

This paper introduces a semi-supervised contrastive learning framework and its application to text-independent speaker verification. The proposed framework employs generalized contrastive loss (GCL). GCL unifies losses from two different…

音频与语音处理 · 电气工程与系统科学 2020-06-09 Nakamasa Inoue , Keita Goto

As a pioneering work, PointContrast conducts unsupervised 3D representation learning via leveraging contrastive learning over raw RGB-D frames and proves its effectiveness on various downstream tasks. However, the trend of large-scale…

计算机视觉与模式识别 · 计算机科学 2023-03-27 Xiaoyang Wu , Xin Wen , Xihui Liu , Hengshuang Zhao