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We review the current schemes of text-image matching models and propose improvements for both training and inference. First, we empirically show limitations of two popular loss (sum and max-margin loss) widely used in training text-image…

机器学习 · 计算机科学 2019-06-05 Fangyu Liu , Rongtian Ye

Deep learning has shown outstanding performance in several applications including image classification. However, deep classifiers are known to be highly vulnerable to adversarial attacks, in that a minor perturbation of the input can easily…

计算机视觉与模式识别 · 计算机科学 2020-10-30 Arslan Ali , Andrea Migliorati , Tiziano Bianchi , Enrico Magli

The mining and utilization of features directly affect the classification performance of models used in the classification and recognition of hyperspectral remote sensing images. Traditional models usually conduct feature mining from a…

计算机视觉与模式识别 · 计算机科学 2021-06-29 Yunsong Zhao , Yin Li , Zhihan Chen , Tianchong Qiu , Guojin Liu

Despite impressive performance as evaluated on i.i.d. holdout data, deep neural networks depend heavily on superficial statistics of the training data and are liable to break under distribution shift. For example, subtle changes to the…

计算机视觉与模式识别 · 计算机科学 2019-03-18 Haohan Wang , Zexue He , Zachary C. Lipton , Eric P. Xing

Deep-learning has proved in recent years to be a powerful tool for image analysis and is now widely used to segment both 2D and 3D medical images. Deep-learning segmentation frameworks rely not only on the choice of network architecture but…

计算机视觉与模式识别 · 计算机科学 2017-09-19 Carole H Sudre , Wenqi Li , Tom Vercauteren , Sébastien Ourselin , M. Jorge Cardoso

The generalization performance of deep neural networks in classification tasks is a major concern in machine learning research. Despite widespread techniques used to diminish the over-fitting issue such as data augmentation,…

机器学习 · 计算机科学 2024-03-14 Mohammad Lashkari , Amin Gheibi

We show that a collection of Gaussian mixture models (GMMs) in $R^{n}$ can be optimally classified using $O(n)$ neurons in a neural network with two hidden layers (deep neural network), whereas in contrast, a neural network with a single…

机器学习 · 计算机科学 2019-02-18 Shirin Jalali , Carl Nuzman , Iraj Saniee

In probabilistic classification, a discriminative model based on the softmax function has a potential limitation in that it assumes unimodality for each class in the feature space. The mixture model can address this issue, although it leads…

机器学习 · 计算机科学 2021-05-10 Hideaki Hayashi , Seiichi Uchida

Image compression is a fundamental research field and many well-known compression standards have been developed for many decades. Recently, learned compression methods exhibit a fast development trend with promising results. However, there…

图像与视频处理 · 电气工程与系统科学 2020-03-31 Zhengxue Cheng , Heming Sun , Masaru Takeuchi , Jiro Katto

Generative Adversarial Networks have surprising ability for generating sharp and realistic images, though they are known to suffer from the so-called mode collapse problem. In this paper, we propose a new GAN variant called Mixture Density…

机器学习 · 计算机科学 2018-11-30 Hamid Eghbal-zadeh , Werner Zellinger , Gerhard Widmer

Large scale image classification models trained on top of popular datasets such as Imagenet have shown to have a distributional skew which leads to disparities in prediction accuracies across different subsections of population…

计算机视觉与模式识别 · 计算机科学 2021-07-21 Rohan Mahadev , Anindya Chakravarti

Implicit generative models have the capability to learn arbitrary complex data distributions. On the downside, training requires telling apart real data from artificially-generated ones using adversarial discriminators, leading to unstable…

机器学习 · 计算机科学 2024-02-27 José Manuel de Frutos , Pablo M. Olmos , Manuel A. Vázquez , Joaquín Míguez

A fast forward feature selection algorithm is presented in this paper. It is based on a Gaussian mixture model (GMM) classifier. GMM are used for classifying hyperspectral images. The algorithm selects iteratively spectral features that…

计算机视觉与模式识别 · 计算机科学 2015-01-06 Mathieu Fauvel , Clement Dechesne , Anthony Zullo , Frédéric Ferraty

Convolutional Neural Networks (CNNs) have been widely used in computer vision tasks, such as face recognition and verification, and have achieved state-of-the-art results due to their ability to capture discriminative deep features.…

计算机视觉与模式识别 · 计算机科学 2018-07-31 Alessandro Calefati , Muhammad Kamran Janjua , Shah Nawaz , Ignazio Gallo

Deep representation learning using triplet network for classification suffers from a lack of theoretical foundation and difficulty in tuning both the network and classifiers for performance. To address the problem, local-margin triplet loss…

Fully convolutional deep neural networks have been asserted to be fast and precise frameworks with great potential in image segmentation. One of the major challenges in training such networks raises when data is unbalanced, which is common…

计算机视觉与模式识别 · 计算机科学 2018-12-17 Seyed Raein Hashemi , Seyed Sadegh Mohseni Salehi , Deniz Erdogmus , Sanjay P. Prabhu , Simon K. Warfield , Ali Gholipour

Recent theoretical results show that gradient descent on deep neural networks under exponential loss functions locally maximizes classification margin, which is equivalent to minimizing the norm of the weight matrices under margin…

机器学习 · 计算机科学 2021-07-22 Andrzej Banburski , Fernanda De La Torre , Nishka Pant , Ishana Shastri , Tomaso Poggio

Previous studies on image classification have mainly focused on the performance of the networks, not on real-time operation or model compression. We propose a Gaussian Deep Recurrent visual Attention Model (GDRAM)- a reinforcement learning…

计算机视觉与模式识别 · 计算机科学 2020-11-13 Dongseok Shim , H. Jin Kim

Ensembles of Convolutional neural networks have shown remarkable results in learning discriminative semantic features for image classification tasks. Though, the models in the ensemble often concentrate on similar regions in images. This…

计算机视觉与模式识别 · 计算机科学 2023-02-28 Tobias Schlagenhauf , Yiwen Lin , Benjamin Noack

This paper considers the problem of networks reconstruction from heterogeneous data using a Gaussian Graphical Mixture Model (GGMM). It is well known that parameter estimation in this context is challenging due to large numbers of variables…

机器学习 · 统计学 2013-10-08 Anani Lotsi , Ernst Wit