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One of the most important problems in system identification and statistics is how to estimate the unknown parameters of a given model. Optimization methods and specialized procedures, such as Empirical Minimization (EM) can be used in case…

Methodology · Statistics 2024-02-09 Braghadeesh Lakshminarayanan , Cristian R. Rojas

Real-world contains an overwhelmingly large number of object classes, learning all of which at once is infeasible. Few shot learning is a promising learning paradigm due to its ability to learn out of order distributions quickly with only a…

Computer Vision and Pattern Recognition · Computer Science 2020-08-05 Jathushan Rajasegaran , Salman Khan , Munawar Hayat , Fahad Shahbaz Khan , Mubarak Shah

Scene text recognition (STR) from high-resolution (HR) images has been significantly successful, however text reading on low-resolution (LR) images is still challenging due to insufficient visual information. Therefore, recently many scene…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Minyi Zhao , Yang Wang , Jihong Guan , Shuigeng Zhou

In multi-stage processes, decisions happen in an ordered sequence of stages. Many of them have the structure of dual funnel problem: as the sample size decreases from one stage to the other, the information increases. A related example is a…

Machine Learning · Computer Science 2020-06-03 Andre Mendes , Julian Togelius , Leandro dos Santos Coelho

Recently, segmentation neural networks have been significantly improved by demonstrating very promising accuracies on public benchmarks. However, these models are very heavy and generally suffer from low inference speed, which limits their…

Computer Vision and Pattern Recognition · Computer Science 2018-10-22 Jiafeng Xie , Bing Shuai , Jian-Fang Hu , Jingyang Lin , Wei-Shi Zheng

Recognizing characters from low-resolution (LR) text images poses a significant challenge due to the information deficiency as well as the noise and blur in low-quality images. Current solutions for low-resolution text recognition (LTR)…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Hang Guo , Tao Dai , Mingyan Zhu , Guanghao Meng , Bin Chen , Zhi Wang , Shu-Tao Xia

We present a two-stage framework for deep one-class classification. We first learn self-supervised representations from one-class data, and then build one-class classifiers on learned representations. The framework not only allows to learn…

Computer Vision and Pattern Recognition · Computer Science 2021-03-29 Kihyuk Sohn , Chun-Liang Li , Jinsung Yoon , Minho Jin , Tomas Pfister

Stereo matching in minimally invasive surgery (MIS) is essential for next-generation navigation and augmented reality. Yet, dense disparity supervision is nearly impossible due to anatomical constraints, typically limiting annotations to…

Computer Vision and Pattern Recognition · Computer Science 2025-11-13 Rui Wang , Ying Zhou , Hao Wang , Wenwei Zhang , Qiang Li , Zhiwei Wang

Fine-grained image recognition classifies subcategories such as bird species or car models. While state-of-the-art (SOTA) models are accurate, they are often too resource-intensive for deployment on constrained devices. Knowledge…

Computer Vision and Pattern Recognition · Computer Science 2026-05-18 Oswin Gosal , Edwin Arkel Rios , Augusto Christian Surya , Fernando Mikael , Bo-Cheng Lai , Min-Chun Hu

Counterfactual learning to rank (CLTR) aims to learn a ranking policy from user interactions while correcting for the inherent biases in interaction data, such as position bias. Existing CLTR methods assume a single ranking policy that…

Information Retrieval · Computer Science 2026-01-08 Shashank Gupta , Yiming Liao , Maarten de Rijke

Hyperspectral image classification, a task that assigns pre-defined classes to each pixel in a hyperspectral image of remote sensing scenes, often faces challenges due to the neglect of correlations between spectrally similar pixels. This…

Computer Vision and Pattern Recognition · Computer Science 2025-04-04 Peifu Liu , Tingfa Xu , Jie Wang , Huan Chen , Huiyan Bai , Jianan Li

Visual anomaly detection, an important problem in computer vision, is usually formulated as a one-class classification and segmentation task. The student-teacher (S-T) framework has proved to be effective in solving this challenge. However,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Xuan Zhang , Shiyu Li , Xi Li , Ping Huang , Jiulong Shan , Ting Chen

Self-supervised learning (SSL) methods targeting scene images have seen a rapid growth recently, and they mostly rely on either a dedicated dense matching mechanism or a costly unsupervised object discovery module. This paper shows that…

Computer Vision and Pattern Recognition · Computer Science 2023-10-02 Ke Zhu , Minghao Fu , Jianxin Wu

This paper proposes a novel image set classification technique based on the concept of linear regression. Unlike most other approaches, the proposed technique does not involve any training or feature extraction. The gallery image sets are…

Computer Vision and Pattern Recognition · Computer Science 2019-03-05 Uzair Nadeem , Syed Afaq Ali Shah , Mohammed Bennamoun , Roberto Togneri , Ferdous Sohel

Conventional 2D human pose estimation methods typically require extensive labeled annotations, which are both labor-intensive and expensive. In contrast, semi-supervised 2D human pose estimation can alleviate the above problems by…

Computer Vision and Pattern Recognition · Computer Science 2025-01-17 Wulian Yun , Mengshi Qi , Fei Peng , Huadong Ma

Person re-identification is a popular research topic which aims at matching the specific person in a multi-camera network automatically. Feature representation and metric learning are two important issues for person re-identification. In…

Computer Vision and Pattern Recognition · Computer Science 2018-08-21 Jianjun Lei , Lijie Niu , Huazhu Fu , Bo Peng , Qingming Huang , Chunping Hou

To reduce the overwhelming size of Deep Neural Networks (DNN) teacher-student methodology tries to transfer knowledge from a complex teacher network to a simple student network. We instead propose a novel method called the teacher-class…

Machine Learning · Computer Science 2021-11-02 Shaiq Munir Malik , Muhammad Umair Haider , Mohbat Tharani , Musab Rasheed , Murtaza Taj

Machine Learning (ML) techniques for image classification routinely require many labelled images for training the model and while testing, we ought to use images belonging to the same domain as those used for training. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2020-11-19 Preeti Jagdish Sajjan , Frank G. Glavin

Model selection in the large-P small-N scenario is discussed in the framework of two-stage models. Two specific models are considered, namely, two-stage least squares (TSLS) involving instrumental variables (IVs), and mediation models. In…

Applications · Statistics 2020-03-25 Haim Bar , Kangyan Liu

Multi-Stage Classifier (MSC) - several classifiers working sequentially in an arranged order and classification decision is partially made at each step - is widely used in industrial applications for various resource limitation reasons. The…

Machine Learning · Computer Science 2023-11-14 Chao Xu , Yu Yang , Rongzhao Wang , Guan Wang , Bojia Lin