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Distributed Denial of Service (DDoS) attacks represent a persistent and evolving threat to modern networked systems, capable of causing large-scale service disruptions. The complexity of such attacks, often hidden within high-dimensional…

密码学与安全 · 计算机科学 2025-04-29 Harsh Patel

Whilst face recognition applications are becoming increasingly prevalent within our daily lives, leading approaches in the field still suffer from performance bias to the detriment of some racial profiles within society. In this study, we…

计算机视觉与模式识别 · 计算机科学 2020-04-21 Seyma Yucer , Samet Akçay , Noura Al-Moubayed , Toby P. Breckon

Several types of numerical and combinatorial optimization algorithms have been used as useful tools to minimize functional forms. Generally, when those forms are non-linear or occur in problems without a specific optimization method,…

化学物理 · 物理学 2007-05-23 Luiz Fernando Roncaratti , Ricardo Gargano , Geraldo Magela e Silva

The vast majority of successful deep neural networks are trained using variants of stochastic gradient descent (SGD) algorithms. Recent attempts to improve SGD can be broadly categorized into two approaches: (1) adaptive learning rate…

机器学习 · 计算机科学 2019-12-04 Michael R. Zhang , James Lucas , Geoffrey Hinton , Jimmy Ba

Discriminative features are crucial for several learning applications, such as object detection and classification. Neural networks are extensively used for extracting discriminative features of images and speech signals. However, the lack…

机器学习 · 计算机科学 2022-01-11 Priyadarshini K , Subhasis Chaudhuri

CNN-based face recognition models have brought remarkable performance improvement, but they are vulnerable to adversarial perturbations. Recent studies have shown that adversaries can fool the models even if they can only access the models'…

计算机视觉与模式识别 · 计算机科学 2021-11-09 Junyoung Byun , Hyojun Go , Changick Kim

This paper studies fitness inheritance as an efficiency enhancement technique for a class of competent genetic algorithms called estimation distribution algorithms. Probabilistic models of important sub-solutions are developed to estimate…

神经与进化计算 · 计算机科学 2016-11-17 Kumara Sastry , Martin Pelikan , David E. Goldberg

Efficient design of biological sequences will have a great impact across many industrial and healthcare domains. However, discovering improved sequences requires solving a difficult optimization problem. Traditionally, this challenge was…

机器学习 · 计算机科学 2020-10-06 Sam Sinai , Richard Wang , Alexander Whatley , Stewart Slocum , Elina Locane , Eric D. Kelsic

Several computer vision and artificial intelligence projects are nowadays exploiting the manifold data distribution using, e.g., the diffusion process. This approach has produced dramatic improvements on the final performance thanks to the…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Federico Magliani , Laura Sani , Stefano Cagnoni , Andrea Prati

Face recognition has achieved significant progress in deep learning era due to the ultra-large-scale and welllabeled datasets. However, training on the outsize datasets is time-consuming and takes up a lot of hardware resource. Therefore,…

计算机视觉与模式识别 · 计算机科学 2022-03-04 Kai Wang , Shuo Wang , Panpan Zhang , Zhipeng Zhou , Zheng Zhu , Xiaobo Wang , Xiaojiang Peng , Baigui Sun , Hao Li , Yang You

When using large-batch training to speed up stochastic gradient descent, learning rates must adapt to new batch sizes in order to maximize speed-ups and preserve model quality. Re-tuning learning rates is resource intensive, while fixed…

机器学习 · 计算机科学 2020-07-13 Tyler B. Johnson , Pulkit Agrawal , Haijie Gu , Carlos Guestrin

Gradient Boosted Decision Tree (GBDT) is a widely-used machine learning algorithm that has been shown to achieve state-of-the-art results on many standard data science problems. We are interested in its application to multioutput problems…

机器学习 · 计算机科学 2022-11-24 Leonid Iosipoi , Anton Vakhrushev

In computer vision, it is well-known that a lack of data diversity will impair model performance. In this study, we address the challenges of enhancing the dataset diversity problem in order to benefit various downstream tasks such as…

计算机视觉与模式识别 · 计算机科学 2024-08-02 Yuhang Li , Xin Dong , Chen Chen , Weiming Zhuang , Lingjuan Lyu

This paper explores an improved Adaboost algorithm based on Long Short-Term Memory Networks (LSTMs), which aims to improve the prediction accuracy of user clicks on web page advertisements. By comparing it with several common machine…

机器学习 · 计算机科学 2024-08-13 Qixuan Yu , Xirui Tang , Feiyang Li , Zinan Cao

The performance of facial super-resolution methods relies on their ability to recover facial structures and salient features effectively. Even though the convolutional neural network and generative adversarial network-based methods deliver…

计算机视觉与模式识别 · 计算机科学 2021-11-23 Abhishek Srivastava , Sukalpa Chanda , Umapada Pal

Precision medicine tailored to individual patients has gained significant attention in recent times. Machine learning techniques are now employed to process personalized data from various sources, including images, genetics, and…

机器学习 · 计算机科学 2023-11-27 Jie Lian , Xufang Luo , Caihua Shan , Dongqi Han , Varut Vardhanabhuti , Dongsheng Li

Training deep neural networks with Stochastic Gradient Descent, or its variants, requires careful choice of both learning rate and batch size. While smaller batch sizes generally converge in fewer training epochs, larger batch sizes offer…

机器学习 · 计算机科学 2018-02-15 Aditya Devarakonda , Maxim Naumov , Michael Garland

Data augmentation has been highly effective in narrowing the data gap and reducing the cost for human annotation, especially for tasks where ground truth labels are difficult and expensive to acquire. In face recognition, large pose and…

计算机视觉与模式识别 · 计算机科学 2020-10-07 Yifan Xing , Yuanjun Xiong , Wei Xia

We first present a general risk bound for ensembles that depends on the Lp norm of the weighted combination of voters which can be selected from a continuous set. We then propose a boosting method, called QuadBoost, which is strongly…

We now know that mid-level features can greatly enhance the performance of image learning, but how to automatically learn the image features efficiently and in an unsupervised manner is still an open question. In this paper, we present a…

计算机视觉与模式识别 · 计算机科学 2014-01-24 Shu Kong , Zhuolin Jiang , Qiang Yang