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We present a visualization algorithm based on a novel unsupervised Siamese neural network training regime and loss function, called Differentiating Embedding Networks (DEN). The Siamese neural network finds differentiating or similar…

Machine Learning · Computer Science 2020-06-12 Isaac Robinson

Online learning via Bayes' theorem allows new data to be continuously integrated into an agent's current beliefs. However, a naive application of Bayesian methods in non stationary environments leads to slow adaptation and results in state…

Machine Learning · Computer Science 2022-02-09 Josue Nassar , Jennifer Brennan , Ben Evans , Kendall Lowrey

The two-tower architecture has been widely applied for learning item and user representations, which is important for large-scale recommender systems. Many two-tower models are trained using various in-batch negative sampling strategies,…

Information Retrieval · Computer Science 2021-10-29 Jinpeng Wang , Jieming Zhu , Xiuqiang He

Training robust retrieval and reranker models typically relies on large-scale retrieval datasets; for example, the BGE collection contains 1.6 million query-passage pairs sourced from various data sources. However, we find that certain…

Information Retrieval · Computer Science 2025-10-21 Nandan Thakur , Crystina Zhang , Xueguang Ma , Jimmy Lin

Best-of-$n$ (BoN) sampling is a practical approach for aligning language model outputs with human preferences without expensive fine-tuning. BoN sampling is performed by generating $n$ responses to a prompt and then selecting the sample…

Information Theory · Computer Science 2025-05-07 Claudio Mayrink Verdun , Alex Oesterling , Himabindu Lakkaraju , Flavio P. Calmon

We introduce Bounded Numerical Differentiation (BOND), a perturbative method for estimating the gradients of black-box functions. BOND is distinguished by its formulation, which adaptively bounds perturbations to ensure accurate sign…

Machine Learning · Computer Science 2026-02-03 Andrew Clark , Jack Moursounidis , Osmaan Rasouli , William Gan , Cooper Doyle , Anna Leontjeva

There exists an apparent negative correlation between performance and interpretability of deep learning models. In an effort to reduce this negative correlation, we propose a Born Identity Network (BIN), which is a post-hoc approach for…

Computer Vision and Pattern Recognition · Computer Science 2021-04-09 Kwanseok Oh , Jee Seok Yoon , Heung-Il Suk

Convolutional neural networks (CNN) have been shown to provide a good solution for classification problems that utilize data obtained from vibrational spectroscopy. Moreover, CNNs are capable of identification from noisy spectra without the…

Signal Processing · Electrical Eng. & Systems 2018-06-27 Jinchao Liu , Stuart J. Gibson , James Mills , Margarita Osadchy

Understanding the behavior of Artificial Neural Networks is one of the main topics in the field recently, as black-box approaches have become usual since the widespread of deep learning. Such high-dimensional models may manifest…

Machine Learning · Computer Science 2021-07-30 Leonardo F. S. Scabini , Odemir M. Bruno

The current Siamese network based on region proposal network (RPN) has attracted great attention in visual tracking due to its excellent accuracy and high efficiency. However, the design of the RPN involves the selection of the number,…

Computer Vision and Pattern Recognition · Computer Science 2021-04-16 Kai Yang , Zhenyu He , Wenjie Pei , Zikun Zhou , Xin Li , Di Yuan , Haijun Zhang

Despite the great success of Siamese-based trackers, their performance under complicated scenarios is still not satisfying, especially when there are distractors. To this end, we propose a novel Siamese relation network, which introduces…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Siyuan Cheng , Bineng Zhong , Guorong Li , Xin Liu , Zhenjun Tang , Xianxian Li , Jing Wang

This paper proposes a sparse Bayesian treatment of deep neural networks (DNNs) for system identification. Although DNNs show impressive approximation ability in various fields, several challenges still exist for system identification…

Systems and Control · Electrical Eng. & Systems 2022-06-02 Hongpeng Zhou , Chahine Ibrahim , Wei Xing Zheng , Wei Pan

The performance of Bayesian optimization (BO), a highly sample-efficient method for expensive black-box problems, is critically governed by the selection of its hyperparameters, including the kernel and acquisition functions. This presents…

Machine Learning · Computer Science 2026-05-25 Joon-Hyun Park , Mujin Cheon , Jeongsu Wi , Dong-Yeun Koh

Reconstructing MR images using deep neural networks from undersampled k-space data without using fully sampled training references offers significant value in practice, which is a self-supervised regression problem calling for effective…

Image and Video Processing · Electrical Eng. & Systems 2025-01-22 Liyan Sun , Shaocong Yu , Chi Zhang , Xinghao Ding

Bayesian Optimization (BO) is a widely used approach for blackbox optimization that leverages a Gaussian process (GP) model and an acquisition function to guide future sampling. While effective in low-dimensional settings, BO faces…

Machine Learning · Computer Science 2025-11-26 Pavankumar Koratikere , Leifur Leifsson

Contrastive methods have led a recent surge in the performance of self-supervised representation learning (SSL). Recent methods like BYOL or SimSiam purportedly distill these contrastive methods down to their essence, removing bells and…

Machine Learning · Computer Science 2022-11-03 Alexander C. Li , Alexei A. Efros , Deepak Pathak

Person re-identification (reID) is an important task that requires to retrieve a person's images from an image dataset, given one image of the person of interest. For learning robust person features, the pose variation of person images is…

Computer Vision and Pattern Recognition · Computer Science 2018-12-13 Yixiao Ge , Zhuowan Li , Haiyu Zhao , Guojun Yin , Shuai Yi , Xiaogang Wang , Hongsheng Li

Entity standardization maps noisy mentions from free-form text to standard entities in a knowledge base. The unique challenge of this task relative to other entity-related tasks is the lack of surrounding context and numerous variations in…

Computation and Language · Computer Science 2023-06-07 Jiaqing Yuan , Michele Merler , Mihir Choudhury , Raju Pavuluri , Munindar P. Singh , Maja Vukovic

Training triplet networks with large-scale data is challenging in face recognition. Due to the number of possible triplets explodes with the number of samples, previous studies adopt the online hard negative mining(OHNM) to handle it.…

Computer Vision and Pattern Recognition · Computer Science 2017-09-12 Chong Wang , Xue Zhang , Xipeng Lan

Generative Adversarial Networks (GANs) can accurately model complex multi-dimensional data and generate realistic samples. However, due to their implicit estimation of data distributions, their evaluation is a challenging task. The majority…

Computer Vision and Pattern Recognition · Computer Science 2020-10-08 Amirsina Torfi , Mohammadreza Beyki , Edward A. Fox
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