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Connectionist temporal classification (CTC) is commonly adopted for sequence modeling tasks like speech recognition, where it is necessary to preserve order between the input and target sequences. However, CTC is only applied to…

Machine Learning · Computer Science 2023-12-18 Zheng Nan , Ting Dang , Vidhyasaharan Sethu , Beena Ahmed

Connectionist temporal classification (CTC) is a popular sequence prediction approach for automatic speech recognition that is typically used with models based on recurrent neural networks (RNNs). We explore whether deep convolutional…

Computation and Language · Computer Science 2018-02-16 Kalpesh Krishna , Liang Lu , Kevin Gimpel , Karen Livescu

Many machine learning problems such as speech recognition, gesture recognition, and handwriting recognition are concerned with simultaneous segmentation and labeling of sequence data. Latent-dynamic conditional random field (LDCRF) is a…

Machine Learning · Computer Science 2016-09-07 Amir Ahooye Atashin , Kamaledin Ghiasi-Shirazi , Ahad Harati

Connectionist Temporal Classification has recently attracted a lot of interest as it offers an elegant approach to building acoustic models (AMs) for speech recognition. The CTC loss function maps an input sequence of observable feature…

Computation and Language · Computer Science 2017-08-16 Thomas Zenkel , Ramon Sanabria , Florian Metze , Jan Niehues , Matthias Sperber , Sebastian Stüker , Alex Waibel

Segmental conditional random fields (SCRFs) and connectionist temporal classification (CTC) are two sequence labeling methods used for end-to-end training of speech recognition models. Both models define a transcription probability by…

Computation and Language · Computer Science 2017-06-07 Liang Lu , Lingpeng Kong , Chris Dyer , Noah A. Smith

We develop an algorithm which can learn from partially labeled and unsegmented sequential data. Most sequential loss functions, such as Connectionist Temporal Classification (CTC), break down when many labels are missing. We address this…

Machine Learning · Computer Science 2022-03-07 Vineel Pratap , Awni Hannun , Gabriel Synnaeve , Ronan Collobert

In this study, we propose advancing all-neural speech recognition by directly incorporating attention modeling within the Connectionist Temporal Classification (CTC) framework. In particular, we derive new context vectors using time…

Computation and Language · Computer Science 2018-03-16 Amit Das , Jinyu Li , Rui Zhao , Yifan Gong

We propose a weakly-supervised framework for action labeling in video, where only the order of occurring actions is required during training time. The key challenge is that the per-frame alignments between the input (video) and label…

Computer Vision and Pattern Recognition · Computer Science 2016-07-29 De-An Huang , Li Fei-Fei , Juan Carlos Niebles

Text recognition methods are gaining rapid development. Some advanced techniques, e.g., powerful modules, language models, and un- and semi-supervised learning schemes, consecutively push the performance on public benchmarks forward.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-01 Ziyin Zhang , Ning Lu , Minghui Liao , Yongshuai Huang , Cheng Li , Min Wang , Wei Peng

Connectionist temporal classification (CTC) has matured as an alignment free to sequence transduction and shows competitive for end-to-end speech recognition. In the CTC topology, the blank symbol occupies more than half of the state…

Computation and Language · Computer Science 2019-12-11 Taiyang Zhao

The connectionist temporal classification (CTC) enables end-to-end sequence learning by maximizing the probability of correctly recognizing sequences during training. The outputs of a CTC-trained model tend to form a series of spikes…

Computer Vision and Pattern Recognition · Computer Science 2020-07-08 Hongzhu Li , Weiqiang Wang

In order to model the evolution of user preference, we should learn user/item embeddings based on time-ordered item purchasing sequences, which is defined as Sequential Recommendation (SR) problem. Existing methods leverage sequential…

Information Retrieval · Computer Science 2021-08-24 Ziwei Fan , Zhiwei Liu , Jiawei Zhang , Yun Xiong , Lei Zheng , Philip S. Yu

Convolutional Neural Networks (CNNs) are effective models for reducing spectral variations and modeling spectral correlations in acoustic features for automatic speech recognition (ASR). Hybrid speech recognition systems incorporating CNNs…

Computation and Language · Computer Science 2017-01-11 Ying Zhang , Mohammad Pezeshki , Philemon Brakel , Saizheng Zhang , Cesar Laurent Yoshua Bengio , Aaron Courville

Connectionist temporal classification (CTC) based supervised sequence training of recurrent neural networks (RNNs) has shown great success in many machine learning areas including end-to-end speech and handwritten character recognition. For…

Machine Learning · Computer Science 2017-02-03 Kyuyeon Hwang , Wonyong Sung

Connectionist Temporal Classification (CTC) model is a very efficient method for modeling sequences, especially for speech data. In order to use CTC model as an Automatic Speech Recognition (ASR) task, the beam search decoding with an…

Computation and Language · Computer Science 2023-06-28 Minkyu Jung , Ohhyeok Kwon , Seunghyun Seo , Soonshin Seo

Sequence labeling models often benefit from incorporating external knowledge. However, this practice introduces data heterogeneity and complicates the model with additional modules, leading to increased expenses for training a…

Computation and Language · Computer Science 2025-06-19 Xuemei Tang , Jun Wang , Qi Su , Chu-ren Huang , Jinghang Gu

Attribute recognition has become crucial because of its wide applications in many computer vision tasks, such as person re-identification. Like many object recognition problems, variations in viewpoints, illumination, and recognition at far…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Hao Liu , Jingjing Wu , Jianguo Jiang , Meibin Qi , Bo Ren

The success of self-attention in NLP has led to recent applications in end-to-end encoder-decoder architectures for speech recognition. Separately, connectionist temporal classification (CTC) has matured as an alignment-free,…

Audio and Speech Processing · Electrical Eng. & Systems 2019-07-02 Julian Salazar , Katrin Kirchhoff , Zhiheng Huang

Conventionally, the manner of articulations in speech signal are derived using discriminative signal processing techniques or deep learning approaches. However, training such complex systems involves feature extraction, phoneme force…

Audio and Speech Processing · Electrical Eng. & Systems 2018-11-06 Pradeep R , Sreenivasa Rao K

Recent research demonstrates that linear models achieve forecasting performance competitive with complex architectures, yet methodologies for enhancing linear models remain underexplored. Motivated by the hypothesis that distinct time…

Machine Learning · Computer Science 2025-10-13 Zipo Jibao , Yingyi Fu , Xinyang Chen , Guoting Chen
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