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Although Generative Adversarial Network (GAN) can be used to generate the realistic image, improper use of these technologies brings hidden concerns. For example, GAN can be used to generate a tampered video for specific people and…

Multimedia · Computer Science 2018-10-19 Chih-Chung Hsu , Chia-Yen Lee , Yi-Xiu Zhuang

We propose a novel unsupervised generative model that learns to disentangle object identity from other low-level aspects in class-imbalanced data. We first investigate the issues surrounding the assumptions about uniformity made by InfoGAN,…

Machine Learning · Computer Science 2020-11-02 Utkarsh Ojha , Krishna Kumar Singh , Cho-Jui Hsieh , Yong Jae Lee

Recent advances in unsupervised deep graph clustering have been significantly promoted by contrastive learning. Despite the strides, most graph contrastive learning models face challenges: 1) graph augmentation is used to improve learning…

Machine Learning · Computer Science 2024-08-23 Chusheng Zeng , Bocheng Wang , Jinghui Yuan , Rong Wang , Mulin Chen

Fine-grained clustering is a practical yet challenging task, whose essence lies in capturing the subtle differences between instances of different classes. Such subtle differences can be easily disrupted by data augmentation or be…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Ruohong Yang , Peng Hu , Xi Peng , Xiting Liu , Yunfan Li

Contemporary deep clustering approaches often rely on either contrastive or non-contrastive techniques to acquire effective representations for clustering tasks. Contrastive methods leverage negative pairs to achieve homogenous…

Machine Learning · Computer Science 2023-11-03 Abhishek Kumar , Dong-Gyu Lee

Fine-grained category discovery using only coarse-grained supervision is a cost-effective yet challenging task. Previous training methods focus on aligning query samples with positive samples and distancing them from negatives. They often…

Artificial Intelligence · Computer Science 2025-02-07 Chang Tian , Matthew B. Blaschko , Wenpeng Yin , Mingzhe Xing , Yinliang Yue , Marie-Francine Moens

Recent self-supervised contrastive learning provides an effective approach for unsupervised person re-identification (ReID) by learning invariance from different views (transformed versions) of an input. In this paper, we incorporate a…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Hao Chen , Yaohui Wang , Benoit Lagadec , Antitza Dantcheva , Francois Bremond

Generative adversarial networks (GANs) are one of the most powerful generative models, but always require a large and balanced dataset to train. Traditional GANs are not applicable to generate minority-class images in a highly imbalanced…

Computer Vision and Pattern Recognition · Computer Science 2021-07-12 Gaofeng Huang , Amir H. Jafari

We propose a novel technique to make neural network robust to adversarial examples using a generative adversarial network. We alternately train both classifier and generator networks. The generator network generates an adversarial…

Machine Learning · Computer Science 2023-07-06 Hyeungill Lee , Sungyeob Han , Jungwoo Lee

We investigate the problem of learning a probabilistic distribution over three-dimensional shapes given two-dimensional views of multiple objects taken from unknown viewpoints. Our approach called projective generative adversarial network…

Computer Vision and Pattern Recognition · Computer Science 2019-06-13 Matheus Gadelha , Aartika Rai , Subhransu Maji , Rui Wang

One of the most challenging aspects of medical image analysis is the lack of a high quantity of annotated data. This makes it difficult for deep learning algorithms to perform well due to a lack of variations in the input space. While…

Computer Vision and Pattern Recognition · Computer Science 2020-03-13 Soumyajyoti Dey , Soham Das , Swarnendu Ghosh , Shyamali Mitra , Sukanta Chakrabarty , Nibaran Das

Recent work has shown the ability to learn generative models for 3D shapes from only unstructured 2D images. However, training such models requires differentiating through the rasterization step of the rendering process, therefore past work…

Computer Vision and Pattern Recognition · Computer Science 2020-03-02 Sebastian Lunz , Yingzhen Li , Andrew Fitzgibbon , Nate Kushman

Image composition is a complex task which requires a lot of information about the scene for an accurate and realistic composition, such as perspective, lighting, shadows, occlusions, and object interactions. Previous methods have…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Amr Ghoneim , Jiju Poovvancheri , Yasushi Akiyama , Dong Chen

Recently introduced generative adversarial network (GAN) has been shown numerous promising results to generate realistic samples. The essential task of GAN is to control the features of samples generated from a random distribution. While…

Machine Learning · Computer Science 2019-04-02 Minhyeok Lee , Junhee Seok

Despite significant advances in clustering methods in recent years, the outcome of clustering of a natural image dataset is still unsatisfactory due to two important drawbacks. Firstly, clustering of images needs a good feature…

Computer Vision and Pattern Recognition · Computer Science 2019-01-23 Dipanjan Das , Ratul Ghosh , Brojeshwar Bhowmick

Building on top of the success of generative adversarial networks (GANs), conditional GANs attempt to better direct the data generation process by conditioning with certain additional information. Inspired by the most recent AC-GAN, in this…

Computer Vision and Pattern Recognition · Computer Science 2018-05-08 Chengcheng Li , Zi Wang , Hairong Qi

For infrastructure inspections, damage representation does not constantly match the predefined classes of damage grade, resulting in detailed clusters of unseen damages or more complex clusters from overlapped space between two grades. The…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Takato Yasuno , Masahiro Okano , Junichiro Fujii

It is known that the inconsistent distribution and representation of different modalities, such as image and text, cause the heterogeneity gap that makes it challenging to correlate such heterogeneous data. Generative adversarial networks…

Multimedia · Computer Science 2018-04-27 Yuxin Peng , Jinwei Qi , Yuxin Yuan

Knowledge representation learning aims at modeling knowledge graph by encoding entities and relations into a low dimensional space. Most of the traditional works for knowledge embedding need negative sampling to minimize a margin-based…

Artificial Intelligence · Computer Science 2018-10-01 Peifeng Wang , Shuangyin Li , Rong pan

The existing contrastive learning methods mainly focus on single-grained representation learning, e.g., part-level, object-level or scene-level ones, thus inevitably neglecting the transferability of representations on other granularity…

Computer Vision and Pattern Recognition · Computer Science 2024-07-03 Chengchao Shen , Jianzhong Chen , Jianxin Wang