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Detecting regime shifts in chaotic time series is hard because observation-space signals are entangled with intrinsic variability. We propose Parameter--Space Changepoint Detection (Param--CPD), a two--stage framework that first amortizes…

机器学习 · 计算机科学 2025-12-09 Xiangbo Deng , Cheng Chen , Peng Yang

The paper describes a novel approach to Spoken Term Detection (STD) in large spoken archives using deep LSTM networks. The work is based on the previous approach of using Siamese neural networks for STD and naturally extends it to directly…

计算与语言 · 计算机科学 2022-10-24 Jan Švec , Luboš Šmídl , Josef V. Psutka , Aleš Pražák

Vision-and-language navigation (VLN) is a crucial but challenging cross-modal navigation task. One powerful technique to enhance the generalization performance in VLN is the use of an independent speaker model to provide pseudo instructions…

计算机视觉与模式识别 · 计算机科学 2024-03-07 Liuyi Wang , Chengju Liu , Zongtao He , Shu Li , Qingqing Yan , Huiyi Chen , Qijun Chen

Accurate detection and diagnosis of abnormal behaviors such as network attacks from multivariate time series (MTS) are crucial for ensuring the stable and effective operation of industrial cyber-physical systems (CPS). However, existing…

机器学习 · 计算机科学 2024-03-06 Haili Sun , Yan Huang , Lansheng Han , Cai Fu , Chunjie Zhou

In this work, we explore modeling change points in time-series data using neural stochastic differential equations (neural SDEs). We propose a novel model formulation and training procedure based on the variational autoencoder (VAE)…

机器学习 · 计算机科学 2025-06-16 Yousef El-Laham , Zhongchang Sun , Haibei Zhu , Tucker Balch , Svitlana Vyetrenko

Automatic affect recognition is a challenging task due to the various modalities emotions can be expressed with. Applications can be found in many domains including multimedia retrieval and human computer interaction. In recent years, deep…

计算机视觉与模式识别 · 计算机科学 2018-02-14 Panagiotis Tzirakis , George Trigeorgis , Mihalis A. Nicolaou , Björn Schuller , Stefanos Zafeiriou

Polyphonic sound event detection (polyphonic SED) is an interesting but challenging task due to the concurrence of multiple sound events. Recently, SED methods based on convolutional neural networks (CNN) and recurrent neural networks (RNN)…

音频与语音处理 · 电气工程与系统科学 2018-07-24 Yaming Liu , Jian Tang , Yan Song , Lirong Dai

End-to-end speech translation (ST), which directly translates from source language speech into target language text, has attracted intensive attentions in recent years. Compared to conventional pipeline systems, end-to-end ST models have…

计算与语言 · 计算机科学 2019-04-18 Yuchen Liu , Hao Xiong , Zhongjun He , Jiajun Zhang , Hua Wu , Haifeng Wang , Chengqing Zong

State of the art speech recognition systems use data-intensive context-dependent phonemes as acoustic units. However, these approaches do not translate well to low resourced languages where large amounts of training data is not available.…

计算与语言 · 计算机科学 2016-06-21 Amir Hossein Harati Nejad Torbati , Joseph Picone

Textual escalation detection has been widely applied to e-commerce companies' customer service systems to pre-alert and prevent potential conflicts. Similarly, in public areas such as airports and train stations, where many impersonal…

声音 · 计算机科学 2021-11-05 Ziang Zhou , Yanze Xu , Ming Li

The recent development of CNN-based image dehazing has revealed the effectiveness of end-to-end modeling. However, extending the idea to end-to-end video dehazing has not been explored yet. In this paper, we propose an End-to-End Video…

计算机视觉与模式识别 · 计算机科学 2017-09-13 Boyi Li , Xiulian Peng , Zhangyang Wang , Jizheng Xu , Dan Feng

Emotion recognition (ER) from speech signals is a robust approach since it cannot be imitated like facial expression or text based sentiment analysis. Valuable information underlying the emotions are significant for human-computer…

声音 · 计算机科学 2023-12-19 David Hason Rudd , Huan Huo , Guandong Xu

We present a model to predict fine-grained emotions along the continuous dimensions of valence, arousal, and dominance (VAD) with a corpus with categorical emotion annotations. Our model is trained by minimizing the EMD (Earth Mover's…

计算与语言 · 计算机科学 2021-09-13 Sungjoon Park , Jiseon Kim , Seonghyeon Ye , Jaeyeol Jeon , Hee Young Park , Alice Oh

Existing out-of-distribution (OOD) detection literature clearly defines semantic shift as a sign of OOD but does not have a consensus over covariate shift. Samples experiencing covariate shift but not semantic shift are either excluded from…

计算机视觉与模式识别 · 计算机科学 2022-04-12 Jingkang Yang , Kaiyang Zhou , Ziwei Liu

We present a novel conversational-context aware end-to-end speech recognizer based on a gated neural network that incorporates conversational-context/word/speech embeddings. Unlike conventional speech recognition models, our model learns…

计算与语言 · 计算机科学 2019-06-28 Suyoun Kim , Siddharth Dalmia , Florian Metze

We propose a novel method, Phase-IDENT, for identifying partial differential equations (PDEs) from noisy observations of dynamical systems that exhibit phase transitions. Such phenomena are prevalent in fluid dynamics and materials science,…

数值分析 · 数学 2026-01-21 Edward L. Yang , Roy Y. He

This paper presents an unsupervised segment-based method for robust voice activity detection (rVAD). The method consists of two passes of denoising followed by a voice activity detection (VAD) stage. In the first pass, high-energy segments…

声音 · 计算机科学 2022-01-12 Zheng-Hua Tan , Achintya kr. Sarkar , Najim Dehak

Estimating noise information exactly is crucial for noise aware training in speech applications including speech enhancement (SE) which is our focus in this paper. To estimate noise-only frames, we employ voice activity detection (VAD) to…

音频与语音处理 · 电气工程与系统科学 2020-12-04 Joohyung Lee , Youngmoon Jung , Myunghun Jung , Hoirin Kim

In this paper, we propose an attention-based end-to-end model for multi-channel keyword spotting (KWS), which is trained to optimize the KWS result directly. As a result, our model outperforms the baseline model with signal pre-processing…

声音 · 计算机科学 2018-11-06 Haitong Zhang , Junbo Zhang , Yujun Wang

The Finite Elements with Switch Detection (FESD) method is a highly accurate direct transcription method for optimal control of several classes of nonsmooth dynamical systems. This paper extends the FESD method to Projected Dynamical…

最优化与控制 · 数学 2024-04-09 Anton Pozharskiy , Armin Nurkanović , Moritz Diehl
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