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The hidden Markov model (HMM) is a fundamental tool for sequence modeling that cleanly separates the hidden state from the emission structure. However, this separation makes it difficult to fit HMMs to large datasets in modern NLP, and they…

Computation and Language · Computer Science 2020-11-10 Justin T. Chiu , Alexander M. Rush

Deep LSTM is an ideal candidate for text recognition. However text recognition involves some initial image processing steps like segmentation of lines and words which can induce error to the recognition system. Without segmentation,…

Computer Vision and Pattern Recognition · Computer Science 2015-02-27 Anupama Ray , Sai Rajeswar , Santanu Chaudhury

We investigate the potential of stochastic neural networks for learning effective waveform-based acoustic models. The waveform-based setting, inherent to fully end-to-end speech recognition systems, is motivated by several comparative…

Machine Learning · Statistics 2021-08-17 Dino Oglic , Zoran Cvetkovic , Peter Sollich

End-to-end acoustic-to-word speech recognition models have recently gained popularity because they are easy to train, scale well to large amounts of training data, and do not require a lexicon. In addition, word models may also be easier to…

Computation and Language · Computer Science 2019-02-20 Shruti Palaskar , Vikas Raunak , Florian Metze

This report describes a new technique for inducing the structure of Hidden Markov Models from data which is based on the general `model merging' strategy (Omohundro 1992). The process begins with a maximum likelihood HMM that directly…

cmp-lg · Computer Science 2008-02-03 Andreas Stolcke , Stephen M. Omohundro

Always-on spoken language interfaces, e.g. personal digital assistants, rely on a wake word to start processing spoken input. We present novel methods to train a hybrid DNN/HMM wake word detection system from partially labeled training…

Audio and Speech Processing · Electrical Eng. & Systems 2020-07-30 Yiming Wang , Hang Lv , Daniel Povey , Lei Xie , Sanjeev Khudanpur

In the area of multi-domain speech recognition, research in the past focused on hybrid acoustic models to build cross-domain and domain-invariant speech recognition systems. In this paper, we empirically examine the difference in behavior…

Audio and Speech Processing · Electrical Eng. & Systems 2020-03-10 Thai-Son Nguyen , Sebastian Stüker , Alex Waibel

Deep neural networks (DNNs) have achieved substantial predictive performance in various speech processing tasks. Particularly, it has been shown that a monaural speech separation task can be successfully solved with a DNN-based method…

Audio and Speech Processing · Electrical Eng. & Systems 2021-04-20 Chihiro Watanabe , Hirokazu Kameoka

To join the advantages of classical and end-to-end approaches for speech recognition, we present a simple, novel and competitive approach for phoneme-based neural transducer modeling. Different alignment label topologies are compared and…

Computation and Language · Computer Science 2021-04-21 Wei Zhou , Simon Berger , Ralf Schlüter , Hermann Ney

Pretrained language models have achieved state-of-the-art performance when adapted to a downstream NLP task. However, theoretical analysis of these models is scarce and challenging since the pretraining and downstream tasks can be very…

Machine Learning · Computer Science 2022-04-22 Colin Wei , Sang Michael Xie , Tengyu Ma

Unsupervised discovery of acoustic tokens from audio corpora without annotation and learning vector representations for these tokens have been widely studied. Although these techniques have been shown successful in some applications such as…

Computation and Language · Computer Science 2018-04-03 Da-Rong Liu , Kuan-Yu Chen , Hung-Yi Lee , Lin-shan Lee

In recent years multilayer perceptrons (MLPs) with many hid- den layers Deep Neural Network (DNN) has performed sur- prisingly well in many speech tasks, i.e. speech recognition, speaker verification, speech synthesis etc. Although in the…

Machine Learning · Computer Science 2015-02-19 Sankar Mukherjee , Shyamal Kumar Das Mandal

Translation models based on hierarchical phrase-based statistical machine translation (HSMT) have shown better performances than the non-hierarchical phrase-based counterparts for some language pairs. The standard approach to HSMT learns…

Computation and Language · Computer Science 2020-04-06 Felipe Sánchez-Martínez , Juan Antonio Pérez-Ortiz , Rafael C. Carrasco

Machine learning algorithms such as linear regression, SVM and neural network have played an increasingly important role in the process of scientific discovery. However, none of them is both interpretable and accurate on nonlinear datasets.…

Quantitative Methods · Quantitative Biology 2017-10-31 Chengyu Liu , Wei Wang

As the foundation of current natural language processing methods, pre-trained language model has achieved excellent performance. However, the black-box structure of the deep neural network in pre-trained language models seriously limits the…

Computation and Language · Computer Science 2023-06-28 Fanyu Wang , Zhenping Xie

State-of-the-art speech recognition systems typically employ neural network acoustic models. However, compared to Gaussian mixture models, deep neural network (DNN) based acoustic models often have many more model parameters, making it…

Computation and Language · Computer Science 2017-04-27 Liang Lu , Steve Renals

Deep neural models, particularly the LSTM-RNN model, have shown great potential for language identification (LID). However, the use of phonetic information has been largely overlooked by most existing neural LID methods, although this…

Computation and Language · Computer Science 2017-08-28 Zhiyuan Tang , Dong Wang , Yixiang Chen , Lantian Li , Andrew Abel

We propose to learn acoustic word embeddings with temporal context for query-by-example (QbE) speech search. The temporal context includes the leading and trailing word sequences of a word. We assume that there exist spoken word pairs in…

Computation and Language · Computer Science 2018-06-19 Yougen Yuan , Cheung-Chi Leung , Lei Xie , Hongjie Chen , Bin Ma , Haizhou Li

This paper presents an "elitist approach" for extracting automatically well-realized speech sounds with high confidence. The elitist approach uses a speech recognition system based on Hidden Markov Models (HMM). The HMM are trained on…

Computation and Language · Computer Science 2007-05-23 Jean-Baptiste Maj , Anne Bonneau , Dominique Fohr , Yves Laprie

Speaker clustering is the task of differentiating speakers in a recording. In a way, the aim is to answer "who spoke when" in audio recordings. A common method used in industry is feature extraction directly from the recording thanks to…

Sound · Computer Science 2018-03-23 Maxime Jumelle , Taqiyeddine Sakmeche