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Recently, hidden Markov models (HMMs) have achieved promising results for offline handwritten Chinese text recognition. However, due to the large vocabulary of Chinese characters with each modeled by a uniform and fixed number of hidden…

Computer Vision and Pattern Recognition · Computer Science 2018-08-14 Wenchao Wang , Jun Du , Zi-Rui Wang

For the past couple of decades, numerical optimization has played a central role in addressing wireless resource management problems such as power control and beamformer design. However, optimization algorithms often entail considerable…

Information Theory · Computer Science 2018-09-18 Haoran Sun , Xiangyi Chen , Qingjiang Shi , Mingyi Hong , Xiao Fu , Nicholas D. Sidiropoulos

This paper presents an entirely unsupervised interest point training framework by jointly learning detector and descriptor, which takes an image as input and outputs a probability and a description for every image point. The objective of…

Computer Vision and Pattern Recognition · Computer Science 2019-07-29 Pei Yan , Yihua Tan , Yuan Xiao , Yuan Tai , Cai Wen

This paper proposes a computationally efficient method of solving evaluation problem of Hidden Markov Model (HMM) with a given set of discrete observation symbols, number of states and probability distribution matrices. The observation…

Data Structures and Algorithms · Computer Science 2012-02-29 R. Gnanajeyaraman , G. Seenivasan

Deep neural network (DNN) based speech enhancement models have attracted extensive attention due to their promising performance. However, it is difficult to deploy a powerful DNN in real-time applications because of its high computational…

Sound · Computer Science 2022-07-25 Xiaohuai Le , Tong Lei , Kai Chen , Jing Lu

State of the art Deep Neural Networks (DNN) can now achieve above human level accuracy on image classification tasks. However their outstanding performances come along with a complex inference mechanism making them arduously interpretable…

Machine Learning · Computer Science 2019-11-07 Fei Wu , Thomas Michel , Alexandre Briot

Recently, end-to-end memory networks have shown promising results on Question Answering task, which encode the past facts into an explicit memory and perform reasoning ability by making multiple computational steps on the memory. However,…

Information Retrieval · Computer Science 2016-09-29 Jiaming Xu , Jing Shi , Yiqun Yao , Suncong Zheng , Bo Xu , Bo Xu

Object detection is one of the key tasks in many applications of computer vision. Deep Neural Networks (DNNs) are undoubtedly a well-suited approach for object detection. However, such DNNs need highly adapted hardware together with…

Computer Vision and Pattern Recognition · Computer Science 2023-04-25 Michael Schlosser , Daniel König , Michael Teutsch

Despite the significant progress made in the last years, state-of-the-art speech recognition technologies provide a satisfactory performance only in the close-talking condition. Robustness of distant speech recognition in adverse acoustic…

Audio and Speech Processing · Electrical Eng. & Systems 2017-10-11 Mirco Ravanelli , Maurizio Omologo

Keyword Spotting (KWS) provides the start signal of ASR problem, and thus it is essential to ensure a high recall rate. However, its real-time property requires low computation complexity. This contradiction inspires people to find a…

Computation and Language · Computer Science 2018-11-07 Yixiao Qu , Sihao Xue , Zhenyi Ying , Hang Zhou , Jue Sun

Hidden Markov models and their variants are the predominant sequential classification method in such domains as speech recognition, bioinformatics and natural language processing. Being generative rather than discriminative models, however,…

Machine Learning · Statistics 2013-02-18 John A. Quinn , Masashi Sugiyama

Hidden Markov models (HMMs) have been successfully applied to automatic speech recognition for more than 35 years in spite of the fact that a key HMM assumption -- the statistical independence of frames -- is obviously violated by speech…

Computation and Language · Computer Science 2010-03-02 Steven Wegmann , Larry Gillick

This paper focuses on the problem of query by example spoken term detection (QbE-STD) in zero-resource scenario. State-of-the-art approaches primarily rely on dynamic time warping (DTW) based template matching techniques using phone…

Audio and Speech Processing · Electrical Eng. & Systems 2019-11-20 Dhananjay Ram , Lesly Miculicich , Hervé Bourlard

It is an effective way that improves the performance of the existing Automatic Speech Recognition (ASR) systems by retraining with more and more new training data in the target domain. Recently, Deep Neural Network (DNN) has become a…

Sound · Computer Science 2019-04-18 Jiabin Xue , Jiqing Han , Tieran Zheng , Jiaxing Guo , Boyong Wu

Neural encoding parameters for spiking neural networks (SNNs) are typically set heuristically. We propose a reinforcement learning-based algorithm to optimize them. Applied to an SNN-based equalizer and demapper in an IM/DD system, the…

Neural and Evolutionary Computing · Computer Science 2025-08-20 Eike-Manuel Edelmann , Alexander von Bank , Laurent Schmalen

Multi-frame approaches for single-microphone speech enhancement, e.g., the multi-frame minimum-power-distortionless-response (MFMPDR) filter, are able to exploit speech correlations across neighboring time frames. In contrast to…

Audio and Speech Processing · Electrical Eng. & Systems 2022-11-15 Marvin Tammen , Dörte Fischer , Bernd T. Meyer , Simon Doclo

In this paper, various structures and methods of Deep Artificial Neural Networks (DNN) will be evaluated and compared for the purpose of continuous Persian speech recognition. One of the first models of neural networks used in speech…

Audio and Speech Processing · Electrical Eng. & Systems 2021-05-06 Arash Dehghani , Seyyed Ali Seyyedsalehi

Hidden Markov model (HMM) has been successfully used for sequential data modeling problems. In this work, we propose to power the modeling capacity of HMM by bringing in neural network based generative models. The proposed model is termed…

Machine Learning · Computer Science 2020-05-26 Dong Liu , Antoine Honoré , Saikat Chatterjee , Lars K. Rasmussen

Keyword spotting is the task of detecting a keyword in streaming audio. Conventional keyword spotting targets predefined keywords classification, but there is growing attention in few-shot (query-by-example) keyword spotting, e.g., N-way…

Sound · Computer Science 2022-06-29 Byeonggeun Kim , Seunghan Yang , Inseop Chung , Simyung Chang

We present a novel approach to lexical error recovery on textual input. An advanced robust tokenizer has been implemented that can not only correct spelling mistakes, but also recover from segmentation errors. Apart from the orthographic…

cmp-lg · Computer Science 2008-02-03 Peter Ingels