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While state-of-the-art contrastive Self-Supervised Learning (SSL) models produce results competitive with their supervised counterparts, they lack the ability to infer latent variables. In contrast, prescribed latent variable (LV) models…

机器学习 · 计算机科学 2021-12-01 Jason Ramapuram , Dan Busbridge , Xavier Suau , Russ Webb

Conventional adversarial defenses reduce classification accuracy whether or not a model is under attacks. Moreover, most of image processing based defenses are defeated due to the problem of obfuscated gradients. In this paper, we propose a…

机器学习 · 计算机科学 2020-05-19 MaungMaung AprilPyone , Hitoshi Kiya

The intrinsic nature of many astronomical objects, such as binary systems, exoplanets, circumstellar and debris disks, and quasar host galaxies, introduces challenging requirements for observational instrumentation and techniques. In each…

天体物理仪器与方法 · 物理学 2022-04-06 Sailee M. Sawant , Daniel Batcheldor

Various visual information protection methods have been proposed for privacy-preserving deep neural networks (DNNs). In contrast, attack methods on such protection methods have been studied simultaneously. In this paper, we evaluate…

密码学与安全 · 计算机科学 2020-10-14 Warit Sirichotedumrong , Hitoshi Kiya

It is pointed out that there are now known four very close pairs of QSOs with separations < 5 arcsec and very different redshifts. Several estimates of the probability that they are accidental configurations range between 10^{-7} and 3.5 x…

天体物理学 · 物理学 2007-05-23 G. Burbidge , F. Hoyle , P. Schneider

We describe an elegant O*(2^k) algorithm for the disjoint compression problem for Odd Cycle Transversal based on a reduction to Above Guarantee Vertex Cover. We believe that this algorithm refines the understanding of the Odd Cycle…

数据结构与算法 · 计算机科学 2013-03-08 R. Krithika , N. S. Narayanaswamy

Optimal modulation (OM) schemes for Gaussian channels with peak and average power constraints are known to require nonuniform probability distributions over signal points, which presents practical challenges. An established way to map…

信息论 · 计算机科学 2022-11-01 Basak Ozaydin , Muriel Médard , Ken Duffy

Recent self-supervised contrastive methods have been able to produce impressive transferable visual representations by learning to be invariant to different data augmentations. However, these methods implicitly assume a particular set of…

计算机视觉与模式识别 · 计算机科学 2021-03-22 Tete Xiao , Xiaolong Wang , Alexei A. Efros , Trevor Darrell

Secret sharing is a new alternative for outsourcing data in a secure way.It avoids the need for time consuming encryption decryption process and also the complexity involved in key management.The data must also be protected from untrusted…

密码学与安全 · 计算机科学 2015-02-27 V. P. Binu , A. Sreekumar

This paper has some inconsistent results, i.e., we made some failed claims because we did some mistakes for using the test criterion for a series. Precisely, our claims on the convergence rate of $\mathcal{O}(1/t)$ of SGD presented in…

机器学习 · 计算机科学 2019-03-01 Lam M. Nguyen , Phuong Ha Nguyen , Dzung T. Phan , Jayant R. Kalagnanam , Marten van Dijk

Vision Transformer (ViT) has shown its advantages over the convolutional neural network (CNN) with its ability to capture global long-range dependencies for visual representation learning. Besides ViT, contrastive learning is another…

计算机视觉与模式识别 · 计算机科学 2022-07-12 Hua-Bao Ling , Bowen Zhu , Dong Huang , Ding-Hua Chen , Chang-Dong Wang , Jian-Huang Lai

In this work, the problem of transmitting an i.i.d Gaussian source over an i.i.d Gaussian wiretap channel with an i.i.d Gaussian side information available at the intended receiver is considered. The intended receiver is assumed to have a…

信息论 · 计算机科学 2011-10-18 Ghadamali Bagherikaram , Konstantinos N. Plataniotis

Most scene graph parsers use a two-stage pipeline to detect visual relationships: the first stage detects entities, and the second predicts the predicate for each entity pair using a softmax distribution. We find that such pipelines,…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Ji Zhang , Kevin J. Shih , Ahmed Elgammal , Andrew Tao , Bryan Catanzaro

Self-supervised Learning (SSL) including the mainstream contrastive learning has achieved great success in learning visual representations without data annotations. However, most methods mainly focus on the instance level information (\ie,…

计算机视觉与模式识别 · 计算机科学 2024-06-04 Mingkai Zheng , Shan You , Fei Wang , Chen Qian , Changshui Zhang , Xiaogang Wang , Chang Xu

Based on the SDSS and SDSS-WISE quasar datasets, we put forward two schemes to estimate the photometric redshifts of quasars. Our schemes are based on the idea that the samples are firstly classified into subsamples by a classifier and then…

天体物理仪器与方法 · 物理学 2019-12-05 Yanxia Zhang , Jingyi Zhang , Xin Jin , Yongheng Zhao

Contrastive learning is commonly applied to self-supervised learning, and has been shown to outperform traditional approaches such as the triplet loss and N-pair loss. However, the requirement of large batch sizes and memory banks has made…

计算机视觉与模式识别 · 计算机科学 2022-08-15 Rishab Balasubramanian , Rupashree Dey , Kunal Rathore

Graph self-supervised learning (SSL) has been vastly employed to learn representations from unlabeled graphs. Existing methods can be roughly divided into predictive learning and contrastive learning, where the latter one attracts more…

机器学习 · 计算机科学 2022-11-29 Jiashun Cheng , Man Li , Jia Li , Fugee Tsung

Building on the well-established capacity-achieving schemes of Sun-Jafar (for replicated storage) and the closely related scheme of Banawan-Ulukus (for MDS-coded setting), a recent work by Chandan et al. proposed new classes of weak private…

信息论 · 计算机科学 2026-01-16 Chandan Anand , Jayesh Seshadri , Prasad Krishnan , Gowtham R. Kurri

Learning-based multi-view stereo (MVS) methods have made impressive progress and surpassed traditional methods in recent years. However, their accuracy and completeness are still struggling. In this paper, we propose a new method to enhance…

计算机视觉与模式识别 · 计算机科学 2022-06-22 Yikang Ding , Zhenyang Li , Dihe Huang , Zhiheng Li , Kai Zhang

The contrast source inversion (CSI) method and the subspace-based optimization method (SOM) are first proposed in 1997 and 2009, respectively, and subsequently modified. The two methods and their variants share several properties and thus…

数值分析 · 数学 2026-03-25 Qiao Hu , Bo Zhang , Haiwen Zhang