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Multimodalities provide promising performance than unimodality in most tasks. However, learning the semantic of the representations from multimodalities efficiently is extremely challenging. To tackle this, we propose the Transformer based…

Computer Vision and Pattern Recognition · Computer Science 2019-11-14 Wubo Li , Wei Zou , Xiangang Li

End-to-end acoustic speech recognition has quickly gained widespread popularity and shows promising results in many studies. Specifically the joint transformer/CTC model provides very good performance in many tasks. However, under noisy and…

Audio and Speech Processing · Electrical Eng. & Systems 2021-04-20 Wentao Yu , Steffen Zeiler , Dorothea Kolossa

CTC-based ASR systems face computational and memory bottlenecks in resource-limited environments. Traditional CTC decoders, requiring up to 90% of processing time in systems (e.g., wav2vec2-large on L4 GPUs), face inefficiencies due to…

Machine Learning · Computer Science 2025-10-13 Atul Shree , Harshith Jupuru

Error correction codes (ECC) are crucial for ensuring reliable information transmission in communication systems. Choukroun & Wolf (2022b) recently introduced the Error Correction Code Transformer (ECCT), which has demonstrated promising…

Machine Learning · Computer Science 2024-10-10 Matan Levy , Yoni Choukroun , Lior Wolf

Unified Speech Recognition (USR) has emerged as a semi-supervised framework for training a single model for audio, visual, and audiovisual speech recognition, achieving state-of-the-art results on in-distribution benchmarks. However, its…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Alexandros Haliassos , Rodrigo Mira , Stavros Petridis

We introduce the Temporal Contrastive Transformer (TCT), a representation learning framework designed to capture contextual temporal dynamics in sequences of financial transactions. The model is trained using a self-supervised contrastive…

Machine Learning · Computer Science 2026-05-22 Danny Butvinik , Yonit Marcus , Nitzan Tal , Gabrielle Azoulay

A novel unconstrained optimization model named weighted trace-penalty minimization (WTPM) is proposed to address the extreme eigenvalue problem arising from the Full Configuration Interaction (FCI) method. Theoretical analysis shows that…

Numerical Analysis · Mathematics 2023-10-10 Weiguo Gao , Yingzhou Li , Hanxiang Shen

Connectionist temporal classification (CTC)-based scene text recognition (STR) methods, e.g., SVTR, are widely employed in OCR applications, mainly due to their simple architecture, which only contains a visual model and a CTC-aligned…

Computer Vision and Pattern Recognition · Computer Science 2025-07-16 Yongkun Du , Zhineng Chen , Hongtao Xie , Caiyan Jia , Yu-Gang Jiang

We introduce the Convolutional Set Transformer (CST), a novel neural architecture designed to process image sets of arbitrary cardinality that are visually heterogeneous yet share high-level semantics - such as a common category, scene, or…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Federico Chinello , Giacomo Boracchi

Speech recognition in mixed language has difficulties to adapt end-to-end framework due to the lack of data and overlapping phone sets, for example in words such as "one" in English and "w\`an" in Chinese. We propose a CTC-based end-to-end…

Computation and Language · Computer Science 2018-10-31 Genta Indra Winata , Andrea Madotto , Chien-Sheng Wu , Pascale Fung

Automatic recognition systems for child speech are lagging behind those dedicated to adult speech in the race of performance. This phenomenon is due to the high acoustic and linguistic variability present in child speech caused by their…

Audio and Speech Processing · Electrical Eng. & Systems 2021-03-05 Lucile Gelin , Morgane Daniel , Julien Pinquier , Thomas Pellegrini

We report an extension of a Keras Model, called CTCModel, to perform the Connectionist Temporal Classification (CTC) in a transparent way. Combined with Recurrent Neural Networks, the Connectionist Temporal Classification is the reference…

Machine Learning · Computer Science 2019-01-24 Yann Soullard , Cyprien Ruffino , Thierry Paquet

In this paper, we propose a simple but effective method to decode the output of Connectionist Temporal Classifier (CTC) model using a bi-directional neural language model. The bidirectional language model uses the future as well as the past…

Computation and Language · Computer Science 2021-10-08 Namkyu Jung , Geonmin Kim , Han-Gyu Kim

The CTC-based automatic speech recognition (ASR) models without the external language model usually lack the capacity to model conditional dependencies and textual interactions. In this paper, we present a Gated Interlayer Collaboration…

Computation and Language · Computer Science 2023-03-15 Yuting Yang , Yuke Li , Binbin Du

Prompt learning has emerged as an efficient alternative to fine-tuning pre-trained vision-language models (VLMs). Despite its promise, current methods still struggle to maintain tail-class discriminability when adapting to class-imbalanced…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Boyang Guo , Liang Li , Lin Peng , Yuhan Gao , Xichun Sheng , Chenggang Yan

We present a simple and efficient auxiliary loss function for automatic speech recognition (ASR) based on the connectionist temporal classification (CTC) objective. The proposed objective, an intermediate CTC loss, is attached to an…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-08 Jaesong Lee , Shinji Watanabe

Recent analysis on speech emotion recognition has made considerable advances with the use of MFCCs spectrogram features and the implementation of neural network approaches such as convolutional neural networks (CNNs). Capsule networks…

Sound · Computer Science 2021-12-28 Ismail Shahin , Noor Hindawi , Ali Bou Nassif , Adi Alhudhaif , Kemal Polat

Multi-talker speech recognition (MTASR) faces unique challenges in disentangling and transcribing overlapping speech. To address these challenges, this paper investigates the role of Connectionist Temporal Classification (CTC) in speaker…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-06 Jiawen Kang , Lingwei Meng , Mingyu Cui , Yuejiao Wang , Xixin Wu , Xunying Liu , Helen Meng

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

This paper introduces a novel training framework called Focused Discriminative Training (FDT) to further improve streaming word-piece end-to-end (E2E) automatic speech recognition (ASR) models trained using either CTC or an interpolation of…

Machine Learning · Computer Science 2024-08-26 Adnan Haider , Xingyu Na , Erik McDermott , Tim Ng , Zhen Huang , Xiaodan Zhuang