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This paper proposes a method for recognizing online handwritten mathematical expressions (OnHME) by building a symbol relation tree (SRT) directly from a sequence of strokes. A bidirectional recurrent neural network learns from multiple…

Computer Vision and Pattern Recognition · Computer Science 2021-05-14 Thanh-Nghia Truong , Hung Tuan Nguyen , Cuong Tuan Nguyen , Masaki Nakagawa

This article conceives a unified representation for near-field and far-field holographic multiple-input multiple-output (HMIMO) channels, addressing a practical design dilemma: "Why does the angular-domain representation no longer function…

Information Theory · Computer Science 2024-07-23 Yuanbin Chen , Xufeng Guo , Gui Zhou , Shi Jin , Derrick Wing Kwan Ng , Zhaocheng Wang

In this paper, we propose a novel time-frequency joint learning method for speech emotion recognition, called Time-Frequency Transformer. Its advantage is that the Time-Frequency Transformer can excavate global emotion patterns in the…

Sound · Computer Science 2023-08-29 Yong Wang , Cheng Lu , Yuan Zong , Hailun Lian , Yan Zhao , Sunan Li

Automatic localization of text-lines in handwritten documents is still an open and challenging research problem. Various writing issues such as uneven spacing between the lines, oscillating and touching text, and the presence of skew become…

Computer Vision and Pattern Recognition · Computer Science 2023-08-14 Bulla Rajesh , Sk Mahafuz Zaman , Mohammed Javed , P. Nagabhushan

Deep learning based methods, especially convolutional neural networks (CNNs) have been successfully applied in the field of single image super-resolution (SISR). To obtain better fidelity and visual quality, most of existing networks are of…

Image and Video Processing · Electrical Eng. & Systems 2021-08-17 Wenbin Xie , Dehua Song , Chang Xu , Chunjing Xu , Hui Zhang , Yunhe Wang

Sequential recommendation (SR) aims to predict users' subsequent interactions by modeling their sequential behaviors. Recent studies have explored frequency domain analysis, which effectively models periodic patterns in user sequences.…

Information Retrieval · Computer Science 2025-08-20 Ilwoong Baek , Mincheol Yoon , Seongmin Park , Jongwuk Lee

Real-image super-resolution (Real-ISR) seeks to recover HR images from LR inputs with mixed, unknown degradations. While diffusion models surpass GANs in perceptual quality, they under-reconstruct high-frequency (HF) details due to a…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Seungho Choi , Jeahun Sung , Jihyong Oh

Facial expression recognition (FER) is a crucial part of human-computer interaction. Existing FER methods achieve high accuracy and generalization based on different open-source deep models and training approaches. However, the performance…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Gianmarco Ipinze Tutuianu , Yang Liu , Ari Alamäki , Janne Kauttonen

Multi-domain sentiment classification deals with the scenario where labeled data exists for multiple domains but insufficient for training effective sentiment classifiers that work across domains. Thus, fully exploiting sentiment knowledge…

Computation and Language · Computer Science 2021-04-20 Jianhua Yuan , Yanyan Zhao , Bing Qin , Ting Liu

Multimodal Named Entity Recognition (MNER) is a crucial task for information extraction from social media platforms such as Twitter. Most current methods rely on attention weights to extract information from both text and images but are…

Computer Vision and Pattern Recognition · Computer Science 2023-06-30 Weide Liu , Xiaoyang Zhong , Jingwen Hou , Shaohua Li , Haozhe Huang , Yuming Fang

Deep learning-based Hand Gesture Recognition (HGR) via surface Electromyogram (sEMG) signals has recently shown significant potential for development of advanced myoelectric-controlled prosthesis. Existing deep learning approaches,…

Signal Processing · Electrical Eng. & Systems 2022-04-01 Soheil Zabihi , Elahe Rahimian , Amir Asif , Arash Mohammadi

The purpose of this research is to describe an efficient iterative method suitable for obtaining high accuracy solutions to high frequency time-harmonic scattering problems. The method allows for both refinement of local polynomial degree…

Computational Physics · Physics 2018-12-26 Ryan Galagusz , Steve McFee

Handwriting Recognition has been a field of great interest in the Artificial Intelligence domain. Due to its broad use cases in real life, research has been conducted widely on it. Prominent work has been done in this field focusing mainly…

Computer Vision and Pattern Recognition · Computer Science 2023-03-07 Minhaz Kamal , Fairuz Shaiara , Chowdhury Mohammad Abdullah , Sabbir Ahmed , Tasnim Ahmed , Md. Hasanul Kabir

In this work we propose a hybrid NN/HMM model for online Arabic handwriting recognition. The proposed system is based on Hidden Markov Models (HMMs) and Multi Layer Perceptron Neural Networks (MLPNNs). The input signal is segmented to…

Computer Vision and Pattern Recognition · Computer Science 2014-01-03 Najiba Tagougui , Houcine Boubaker , Monji Kherallah , Adel M. ALIMI

There is much interest in the Hierarchical Dirichlet Process Hidden Markov Model (HDP-HMM) as a natural Bayesian nonparametric extension of the traditional HMM. However, in many settings the HDP-HMM's strict Markovian constraints are…

Machine Learning · Computer Science 2012-03-19 Matthew J. Johnson , Alan Willsky

The ubiquitous role of the cyber-infrastructures, such as the WWW, provides myriad opportunities for machine learning and its broad spectrum of application domains taking advantage of digital communication. Pattern classification and…

Due to domain shifts, machine learning systems typically struggle to generalize well to new domains that differ from those of training data, which is what domain generalization (DG) aims to address. Although a variety of DG methods have…

Machine Learning · Computer Science 2023-11-15 Jingang Qu , Thibault Faney , Ze Wang , Patrick Gallinari , Soleiman Yousef , Jean-Charles de Hemptinne

In the event-related functional magnetic resonance imaging (fMRI) data analysis, there is an extensive interest in accurately and robustly estimating the hemodynamic response function (HRF) and its associated statistics (e.g., the magnitude…

Applications · Statistics 2013-12-23 Jiaping Wang , Hongtu Zhu , Jianqing Fan , Kelly Giovanello , Weili Lin

Frequency modulation features capture the fine structure of speech formants that constitute beneficial and supplementary to the traditional energy-based cepstral features. Improvements have been demonstrated mainly in GMM-HMM systems for…

Sound · Computer Science 2019-09-04 Isidoros Rodomagoulakis , Petros Maragos

The use of Deep Learning (DL) based methods in medical histopathology images have been one of the most sought after solutions to classify, segment, and detect diseased biopsy samples. However, given the complex nature of medical datasets…

Computer Vision and Pattern Recognition · Computer Science 2022-02-23 Suvidha Tripathi , Satish Kumar Singh
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