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Variational Auto-Encoders (VAEs) have emerged as powerful probabilistic models for generative tasks. However, their convergence properties have not been rigorously proven. The challenge of proving convergence is inherently difficult due to…

机器学习 · 计算机科学 2024-09-10 Li Wang , Wei Huang

In this paper, we are interested in unsupervised (unknown noise) audio-visual speech enhancement based on variational autoencoders (VAEs), where the probability distribution of clean speech spectra is simulated using an encoder-decoder…

音频与语音处理 · 电气工程与系统科学 2021-03-10 Mostafa Sadeghi , Xavier Alameda-Pineda

Conversational agents have begun to rise both in the academic (in terms of research) and commercial (in terms of applications) world. This paper investigates the task of building a non-goal driven conversational agent, using neural network…

计算与语言 · 计算机科学 2019-02-01 Raffaele Piccini , Gerasimos Spanakis

Variational Autoencoder (VAE), a simple and effective deep generative model, has led to a number of impressive empirical successes and spawned many advanced variants and theoretical investigations. However, recent studies demonstrate that,…

机器学习 · 计算机科学 2019-01-08 Xuezhe Ma , Chunting Zhou , Eduard Hovy

Natural language generation (NLG) is a critical component in spoken dialogue systems. Classic NLG can be divided into two phases: (1) sentence planning: deciding on the overall sentence structure, (2) surface realization: determining…

计算与语言 · 计算机科学 2018-08-10 Shang-Yu Su , Kai-Ling Lo , Yi-Ting Yeh , Yun-Nung Chen

Thanks to the rise of deep learning and the availability of large-scale audio-visual databases, recent advances have been achieved in Visual Speech Recognition (VSR). Similar to other speech processing tasks, these end-to-end VSR systems…

计算机视觉与模式识别 · 计算机科学 2024-02-21 David Gimeno-Gómez , Carlos-D. Martínez-Hinarejos

While there have been significant advances in de-tecting emotions in text, in the field of utter-ance-level emotion recognition (ULER), there are still many problems to be solved. In this paper, we address some challenges in ULER in dialog…

计算与语言 · 计算机科学 2020-02-19 QingBiao Li , ChunHua Wu , KangFeng Zheng , Zhe Wang

Text variational autoencoders (VAEs) are notorious for posterior collapse, a phenomenon where the model's decoder learns to ignore signals from the encoder. Because posterior collapse is known to be exacerbated by expressive decoders,…

计算与语言 · 计算机科学 2021-11-25 Seongmin Park , Jihwa Lee

Deep generative models are reported to be useful in broad applications including image generation. Repeated inference between data space and latent space in these models can denoise cluttered images and improve the quality of inferred…

机器学习 · 统计学 2017-12-13 Yoshihiro Nagano , Ryo Karakida , Masato Okada

As Deep Neural Networks (DNNs) are considered the state-of-the-art in many classification tasks, the question of their semantic generalizations has been raised. To address semantic interpretability of learned features, we introduce a novel…

计算机视觉与模式识别 · 计算机科学 2018-09-11 Shideh Rezaeifar , Olga Taran , Slava Voloshynovskiy

This paper proposes a new model, called condition-transforming variational autoencoder (CTVAE), to improve the performance of conversation response generation using conditional variational autoencoders (CVAEs). In conventional CVAEs , the…

计算与语言 · 计算机科学 2019-04-25 Yu-Ping Ruan , Zhen-Hua Ling , Quan Liu , Zhigang Chen , Nitin Indurkhya

In this paper, we present a general framework to scale graph autoencoders (AE) and graph variational autoencoders (VAE). This framework leverages graph degeneracy concepts to train models only from a dense subset of nodes instead of using…

机器学习 · 计算机科学 2022-06-22 Guillaume Salha , Romain Hennequin , Viet Anh Tran , Michalis Vazirgiannis

Recurrent Neural Networks (RNN) received a vast amount of attention last decade. Recently, the architectures of Recurrent AutoEncoders (RAE) found many applications in practice. RAE can extract the semantically valuable information, called…

机器学习 · 计算机科学 2021-06-14 Robert Susik

Apart from discriminative models for classification and object detection tasks, the application of deep convolutional neural networks to basic research utilizing natural imaging data has been somewhat limited; particularly in cases where a…

计算机视觉与模式识别 · 计算机科学 2020-09-22 R. Ian Etheredge , Manfred Schartl , Alex Jordan

Variational auto-encoders (VAEs) are widely used in natural language generation due to the regularization of the latent space. However, generating sentences from the continuous latent space does not explicitly model the syntactic…

计算与语言 · 计算机科学 2019-07-15 Yu Bao , Hao Zhou , Shujian Huang , Lei Li , Lili Mou , Olga Vechtomova , Xinyu Dai , Jiajun Chen

Most of the prevalent approaches in speech prosody modeling rely on learning global style representations in a continuous latent space which encode and transfer the attributes of reference speech. However, recent work on neural codecs which…

Objective speech disorder classification for speakers with communication difficulty is desirable for diagnosis and administering therapy. With the current state of speech technology, it is evident to propose neural networks for this…

音频与语音处理 · 电气工程与系统科学 2021-06-15 Jinzi Qi , Hugo Van hamme

This paper introduces the Descriptive Variational Autoencoder (DVAE), an unsupervised and end-to-end trainable neural network for predicting vehicle trajectories that provides partial interpretability. The novel approach is based on the…

机器学习 · 计算机科学 2021-06-25 Marion Neumeier , Andreas Tollkühn , Thomas Berberich , Michael Botsch

We introduce nested diffusion models, an efficient and powerful hierarchical generative framework that substantially enhances the generation quality of diffusion models, particularly for images of complex scenes. Our approach employs a…

计算机视觉与模式识别 · 计算机科学 2024-12-10 Xiao Zhang , Ruoxi Jiang , Rebecca Willett , Michael Maire

Low-rank recurrent neural networks (lrRNNs) are a class of models that uncover low-dimensional latent dynamics underlying neural population activity. Although their functional connectivity is low-rank, it lacks disentanglement…

神经元与认知 · 定量生物学 2025-11-19 Chengrui Li , Yunmiao Wang , Yule Wang , Weihan Li , Dieter Jaeger , Anqi Wu