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Temporal action localization is an important yet challenging problem. Given a long, untrimmed video consisting of multiple action instances and complex background contents, we need not only to recognize their action categories, but also to…

计算机视觉与模式识别 · 计算机科学 2017-06-14 Zheng Shou , Jonathan Chan , Alireza Zareian , Kazuyuki Miyazawa , Shih-Fu Chang

Streaming Video Large Language Models (VideoLLMs) have demonstrated impressive performance across various video understanding tasks, but they face significant challenges in real-time deployment due to the high computational cost of…

计算机视觉与模式识别 · 计算机科学 2026-02-12 Yiyu Wang , Xuyang Liu , Xiyan Gui , Xinying Lin , Boxue Yang , Chenfei Liao , Tailai Chen , Linfeng Zhang

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…

计算机视觉与模式识别 · 计算机科学 2016-07-29 De-An Huang , Li Fei-Fei , Juan Carlos Niebles

The stochastic nature of time delays and sampling intervals in Networked Control Systems poses significant challenges for controller synthesis and analysis, often leading to conservative designs and degraded performance. This work presents…

系统与控制 · 电气工程与系统科学 2025-07-01 Matheus Wagner , Marcelo M. Morato , Antônio Augusto Fröhlich , Julio E. Normey-Rico

An inferior performance of the streaming automatic speech recognition models versus non-streaming model is frequently seen due to the absence of future context. In order to improve the performance of the streaming model and reduce the…

声音 · 计算机科学 2022-03-30 Jingyu Sun , Guiping Zhong , Dinghao Zhou , Baoxiang Li

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…

机器学习 · 计算机科学 2022-03-07 Vineel Pratap , Awni Hannun , Gabriel Synnaeve , Ronan Collobert

For Finite State Machines (FSMs) a rich testing theory has been developed to discover aspects of their behavior and ensure their correct functioning. Although this theory is widely used, e.g., to check conformance of protocol…

形式语言与自动机理论 · 计算机科学 2019-10-23 Petra van den Bos , Frits Vaandrager

Non-native speech causes automatic speech recognition systems to degrade in performance. Past strategies to address this challenge have considered model adaptation, accent classification with a model selection, alternate pronunciation…

音频与语音处理 · 电气工程与系统科学 2019-10-03 Shahram Ghorbani , Ahmet E. Bulut , John H. L. Hansen

The interest in deep learning methods for solving traditional signal processing tasks has been steadily growing in the last years. Time delay estimation (TDE) in adverse scenarios is a challenging problem, where classical approaches based…

音频与语音处理 · 电气工程与系统科学 2020-02-04 Luca Comanducci , Maximo Cobos , Fabio Antonacci , Augusto Sarti

Fault diagnosis of rotating machinery is an important engineering problem. In recent years, fault diagnosis methods based on the Convolutional Neural Network (CNN) and Recurrent Neural Network (RNN) have been mature, but Transformer has not…

计算工程、金融与科学 · 计算机科学 2021-08-31 Yuhong Jin , Lei Hou , Yushu Chen

Simultaneous machine translation is a variant of machine translation that starts the translation process before the end of an input. This task faces a trade-off between translation accuracy and latency. We have to determine when we start…

计算与语言 · 计算机科学 2019-11-28 Katsuki Chousa , Katsuhito Sudoh , Satoshi Nakamura

Temporal action segmentation is a topic of increasing interest, however, annotating each frame in a video is cumbersome and costly. Weakly supervised approaches therefore aim at learning temporal action segmentation from videos that are…

计算机视觉与模式识别 · 计算机科学 2020-04-01 Mohsen Fayyaz , Juergen Gall

Most existing sequence labelling models rely on a fixed decomposition of a target sequence into a sequence of basic units. These methods suffer from two major drawbacks: 1) the set of basic units is fixed, such as the set of words,…

计算与语言 · 计算机科学 2017-08-15 Hairong Liu , Zhenyao Zhu , Xiangang Li , Sanjeev Satheesh

Existing video tokenizers typically use the traditional Variational Autoencoder (VAE) architecture for video compression and reconstruction. However, to achieve good performance, its training process often relies on complex multi-stage…

计算机视觉与模式识别 · 计算机科学 2025-03-28 Nianzu Yang , Pandeng Li , Liming Zhao , Yang Li , Chen-Wei Xie , Yehui Tang , Xudong Lu , Zhihang Liu , Yun Zheng , Yu Liu , Junchi Yan

Connectionist Temporal Classification (CTC), a non-autoregressive training criterion, is widely used in online keyword spotting (KWS). However, existing CTC-based KWS decoding strategies either rely on Automatic Speech Recognition (ASR),…

音频与语音处理 · 电气工程与系统科学 2024-12-25 Yu Xi , Haoyu Li , Xiaoyu Gu , Hao Li , Yidi Jiang , Kai Yu

We propose the Transformer-based Tidal disruption events (TDE) Classifier (\texttt{TTC}), specifically designed to operate effectively with both real-time alert streams and archival data of the Wide Field Survey Telescope (WFST). It aims to…

We propose a novel approach for channel state information (CSI) compression in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems, where the frequency-domain channel matrix is treated as a…

信号处理 · 电气工程与系统科学 2025-02-28 Bumsu Park , Heedong Do , Namyoon Lee

Problem of adaptive state observer synthesis for linear time-varying (LTV) system with unknown time-varying parameter and delayed output measurements is considered. State observation problem has attracted the attention of many researchers…

动力系统 · 数学 2022-07-26 Alexey Bobtsov , Nikolay Nikolaev , Olga Slita , Olga Kozachek

Transient stability and critical clearing time (CCT) are important concepts in power system protection and control. This paper explores and compares various learning-based methods for predicting CCT under uncertainties arising from…

系统与控制 · 电气工程与系统科学 2024-09-05 Xingjian Wu , Xiaoting Wang , Xiaozhe Wang , Peter E. Caines , Jingyu Liu

Deploying models on target domain data subject to distribution shift requires adaptation. Test-time training (TTT) emerges as a solution to this adaptation under a realistic scenario where access to full source domain data is not available…

计算机视觉与模式识别 · 计算机科学 2022-10-17 Yongyi Su , Xun Xu , Kui Jia