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We introduce CULT (Continual Unsupervised Representation Learning with Typicality-Based Environment Detection), a new algorithm for continual unsupervised learning with variational auto-encoders. CULT uses a simple typicality metric in the…

Machine Learning · Computer Science 2022-07-19 Oliver Daniels-Koch

Unsupervised visible-infrared person re-identification (USVI-ReID) aims to match specified people in infrared images to visible images without annotations, and vice versa. USVI-ReID is a challenging yet under-explored task. Most existing…

Computer Vision and Pattern Recognition · Computer Science 2024-10-25 Jiangming Shi , Xiangbo Yin , Yachao Zhang , Zhizhong Zhang , Yuan Xie , Yanyun Qu

Instruction tuning is essential for aligning large language models (LLMs) to downstream tasks and commonly relies on large, diverse corpora. However, small, high-quality subsets, known as coresets, can deliver comparable or superior…

Computation and Language · Computer Science 2026-05-15 Manish Nagaraj , Sakshi Choudhary , Utkarsh Saxena , Deepak Ravikumar , Kaushik Roy

Recently, contrastive learning has risen to be a promising approach for large-scale self-supervised learning. However, theoretical understanding of how it works is still unclear. In this paper, we propose a new guarantee on the downstream…

Machine Learning · Computer Science 2022-05-30 Yifei Wang , Qi Zhang , Yisen Wang , Jiansheng Yang , Zhouchen Lin

In this paper we propose to augment a modern neural-network architecture with an attention model inspired by human perception. Specifically, we adversarially train and analyze a neural model incorporating a human inspired, visual attention…

Computer Vision and Pattern Recognition · Computer Science 2019-12-06 Daniel Zoran , Mike Chrzanowski , Po-Sen Huang , Sven Gowal , Alex Mott , Pushmeet Kohl

To evaluate clustering results is a significant part of cluster analysis. There are no true class labels for clustering in typical unsupervised learning. Thus, a number of internal evaluations, which use predicted labels and data, have been…

Machine Learning · Computer Science 2021-01-06 Shuyue Guan , Murray Loew

In this work, we propose a streaming AV-ASR system based on a hybrid connectionist temporal classification (CTC)/attention neural network architecture. The audio and the visual encoder neural networks are both based on the conformer…

Audio and Speech Processing · Electrical Eng. & Systems 2023-07-04 Pingchuan Ma , Niko Moritz , Stavros Petridis , Christian Fuegen , Maja Pantic

We introduce Contextual Vision Transformers (ContextViT), a method designed to generate robust image representations for datasets experiencing shifts in latent factors across various groups. Derived from the concept of in-context learning,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-02 Yujia Bao , Theofanis Karaletsos

Convolutional Neural Networks (CNNs) are being increasingly used to address the problem of iris presentation attack detection. In this work, we propose attention-guided iris presentation attack detection (AG-PAD) to augment CNNs with…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Cunjian Chen , Arun Ross

This paper presents a new self-supervised video representation learning framework, ARVideo, which autoregressively predicts the next video token in a tailored sequence order. Two key designs are included. First, we organize autoregressive…

Computer Vision and Pattern Recognition · Computer Science 2024-05-27 Sucheng Ren , Hongru Zhu , Chen Wei , Yijiang Li , Alan Yuille , Cihang Xie

Within the educational context, a key goal is to assess students acquired skills and to cluster students according to their ability level. In this regard, a relevant element to be accounted for is the possible effect of the school students…

Applications · Statistics 2014-08-12 Michela Gnaldi , Silvia Bacci , Francesco Bartolucci

It is crucial to evaluate the quality and determine the optimal number of clusters in cluster analysis. In this paper, the multi-granularity characterization of the data set is carried out to obtain the hyper-balls. The cluster internal…

Machine Learning · Computer Science 2023-01-02 Jiang Xie , Pengfei Zhao , Shuyin Xia , Guoyin Wang , Dongdong Cheng

Despite rapid advances in continual learning, a large body of research is devoted to improving performance in the existing setups. While a handful of work do propose new continual learning setups, they still lack practicality in certain…

Machine Learning · Computer Science 2022-03-22 Hyunseo Koh , Dahyun Kim , Jung-Woo Ha , Jonghyun Choi

In this paper, we propose a novel approach to group users according to the VoD user request pattern. We cluster the user requests based on ART1 neural network algorithm. The knowledge extracted from the cluster is used to prefetch the…

Multimedia · Computer Science 2009-10-09 P. Jayarekha , T. R. GopalaKrishnan Nair

Modern supervised semantic segmentation methods are usually finetuned based on the supervised or self-supervised models pre-trained on ImageNet. Recent work shows that transferring the knowledge from CLIP to semantic segmentation via prompt…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Chaohui Yu , Qiang Zhou , Zhibin Wang , Fan Wang

Clustering techniques are often validated using benchmark datasets where class labels are used as ground-truth clusters. However, depending on the datasets, class labels may not align with the actual data clusters, and such misalignment…

Machine Learning · Computer Science 2025-03-04 Hyeon Jeon , Michaël Aupetit , DongHwa Shin , Aeri Cho , Seokhyeon Park , Jinwook Seo

Graph-based clustering has shown promising performance in many tasks. A key step of graph-based approach is the similarity graph construction. In general, learning graph in kernel space can enhance clustering accuracy due to the…

Machine Learning · Computer Science 2019-05-22 Zhao Kang , Honghui Xu , Boyu Wang , Hongyuan Zhu , Zenglin Xu

Attention mechanisms have significantly boosted the performance of video classification neural networks thanks to the utilization of perspective contexts. However, the current research on video attention generally focuses on adopting a…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Yanbin Hao , Shuo Wang , Pei Cao , Xinjian Gao , Tong Xu , Jinmeng Wu , Xiangnan He

We introduce a novel self-supervised deep clustering approach tailored for unstructured data without requiring prior knowledge of the number of clusters, termed Adaptive Self-supervised Robust Clustering (ASRC). In particular, ASRC…

Machine Learning · Computer Science 2024-07-31 Chen-Lu Ding , Jiancan Wu , Wei Lin , Shiyang Shen , Xiang Wang , Yancheng Yuan

In many health policy settings, adaptive interventions target a population of clusters (e.g., schools), with the ultimate intent of impacting outcomes at the level of individuals within the clusters. Health policy researchers can use…