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Handwritten Text Recognition (HTR) is still a challenging problem because it must deal with two important difficulties: the variability among writing styles, and the scarcity of labelled data. To alleviate such problems, synthetic data…

计算机视觉与模式识别 · 计算机科学 2020-05-28 Lei Kang , Marçal Rusiñol , Alicia Fornés , Pau Riba , Mauricio Villegas

Contrastive learning has become pivotal in unsupervised representation learning, with frameworks like Momentum Contrast (MoCo) effectively utilizing large negative sample sets to extract discriminative features. However, traditional…

机器学习 · 计算机科学 2025-01-29 Duy Hoang , Huy Ngo , Khoi Pham , Tri Nguyen , Gia Bao , Huy Phan

Adversarial attacks exploit the vulnerabilities of convolutional neural networks by introducing imperceptible perturbations that lead to misclassifications, exposing weaknesses in feature representations and decision boundaries. This paper…

机器学习 · 计算机科学 2024-12-30 Longwei Wang , Navid Nayyem , Abdullah Rakin

Detecting anomalies is one fundamental aspect of a safety-critical software system, however, it remains a long-standing problem. Numerous branches of works have been proposed to alleviate the complication and have demonstrated their…

机器学习 · 计算机科学 2023-01-31 Hyunsoo Cho , Jinseok Seol , Sang-goo Lee

This paper proposes an unsupervised data selection method by using a submodular function based on contrastive loss ratios of target and training data sets. A model using a contrastive loss function is trained on both sets. Then the ratio of…

音频与语音处理 · 电气工程与系统科学 2022-07-26 Chanho Park , Rehan Ahmad , Thomas Hain

Contrastive pre-training on distant supervision has shown remarkable effectiveness in improving supervised relation extraction tasks. However, the existing methods ignore the intrinsic noise of distant supervision during the pre-training…

计算与语言 · 计算机科学 2023-02-13 Zhen Wan , Fei Cheng , Qianying Liu , Zhuoyuan Mao , Haiyue Song , Sadao Kurohashi

We present a contrasting learning approach with data augmentation techniques to learn document representations in an unsupervised manner. Inspired by recent contrastive self-supervised learning algorithms used for image and NLP pretraining,…

Handwritten word retrieval is vital for digital archives but remains challenging due to large handwriting variability and cross-lingual semantic gaps. While large vision-language models offer potential solutions, their prohibitive…

计算机视觉与模式识别 · 计算机科学 2026-01-19 Fangke Chen , Tianhao Dong , Sirry Chen , Guobin Zhang , Yishu Zhang , Yining Chen

Visual recognition is recently learned via either supervised learning on human-annotated image-label data or language-image contrastive learning with webly-crawled image-text pairs. While supervised learning may result in a more…

计算机视觉与模式识别 · 计算机科学 2022-04-08 Jianwei Yang , Chunyuan Li , Pengchuan Zhang , Bin Xiao , Ce Liu , Lu Yuan , Jianfeng Gao

Self-supervised learning establishes a new paradigm of learning representations with much fewer or even no label annotations. Recently there has been remarkable progress on large-scale contrastive learning models which require substantial…

机器学习 · 计算机科学 2022-02-15 Hangwei Qian , Tian Tian , Chunyan Miao

Research on Speech Emotion Recognition (SER) often faces challenges such as the lack of large-scale public datasets and limited generalization capability when dealing with data from different distributions. To solve this problem, this paper…

声音 · 计算机科学 2024-12-02 Xiang minjie

Contrastive learning is a discriminative approach that aims at grouping similar samples closer and diverse samples far from each other. It it an efficient technique to train an encoder generating distinguishable and informative…

计算机视觉与模式识别 · 计算机科学 2021-07-19 Qing Chen , Jian Zhang

Zero-shot Handwritten Chinese Character Recognition (HCCR) aims to recognize unseen characters by leveraging radical-based semantic compositions. However, existing approaches often treat characters as flat radical sequences, neglecting the…

计算机视觉与模式识别 · 计算机科学 2026-02-11 Qiuming Luo , Tao Zeng , Feng Li , Heming Liu , Rui Mao , Chang Kong

Conventional machine learning models, particularly tree-based approaches, have demonstrated promising performance across various clinical prediction tasks using electronic health record (EHR) data. Despite their strengths, these models…

计算与语言 · 计算机科学 2025-05-26 Sara Ketabi , Dhanesh Ramachandram

Offline Handwritten Text Recognition (HTR) systems play a crucial role in applications such as historical document digitization, automatic form processing, and biometric authentication. However, their performance is often hindered by the…

计算机视觉与模式识别 · 计算机科学 2025-07-10 Yassin Hussein Rassul , Aram M. Ahmed , Polla Fattah , Bryar A. Hassan , Arwaa W. Abdulkareem , Tarik A. Rashid , Joan Lu

As natural language interfaces enable users to express increasingly complex natural language queries, there is a parallel explosion of user review content that can allow users to better find items such as restaurants, books, or movies that…

Fine-grained remote sensing datasets often use hierarchical label structures to differentiate objects in a coarse-to-fine manner, with each object annotated across multiple levels. However, embedding this semantic hierarchy into the…

计算机视觉与模式识别 · 计算机科学 2026-01-01 Jingzhou Chen , Dexin Chen , Fengchao Xiong , Yuntao Qian , Liang Xiao

Freeform handwriting authentication verifies a person's identity from their writing style and habits in messy handwriting data. This technique has gained widespread attention in recent years as a valuable tool for various fields, e.g.,…

计算机视觉与模式识别 · 计算机科学 2024-08-20 Jingyao Wang , Luntian Mou , Changwen Zheng , Wen Gao

In the field of automatic Electrocardiogram (ECG) diagnosis, due to the relatively limited amount of labeled data, how to build a robust ECG pretrained model based on unlabeled data is a key area of focus for researchers. Recent…

信号处理 · 电气工程与系统科学 2025-06-10 Xiaoyu Sun , Yang Yang , Xunde Dong

Contrastive learning has become a new paradigm for unsupervised sentence embeddings. Previous studies focus on instance-wise contrastive learning, attempting to construct positive pairs with textual data augmentation. In this paper, we…

计算与语言 · 计算机科学 2022-12-13 Jiali Zeng , Yongjing Yin , Yufan Jiang , Shuangzhi Wu , Yunbo Cao