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Variational autoencoders~(VAEs) have shown a promise in data-driven conversation modeling. However, most VAE conversation models match the approximate posterior distribution over the latent variables to a simple prior such as standard…

Computation and Language · Computer Science 2019-02-27 Xiaodong Gu , Kyunghyun Cho , Jung-Woo Ha , Sunghun Kim

Recent language models can generate interesting and grammatically correct text in story generation but often lack plot development and long-term coherence. This paper experiments with a latent vector planning approach based on a TD-VAE…

Computation and Language · Computer Science 2021-09-15 David Wilmot , Frank Keller

Although the Conditional Variational AutoEncoder (CVAE) model can generate more diversified responses than the traditional Seq2Seq model, the responses often have low relevance with the input words or are illogical with the question. A…

Computation and Language · Computer Science 2022-10-12 Jiayi Liu , Wei Wei , Zhixuan Chu , Xing Gao , Ji Zhang , Tan Yan , Yulin Kang

In this thesis, we explore the use of deep neural networks for generation of natural language. Specifically, we implement two sequence-to-sequence neural variational models - variational autoencoders (VAE) and variational encoder-decoders…

Computation and Language · Computer Science 2018-08-29 Hareesh Bahuleyan

This paper presents a novel unsupervised abstractive summarization method for opinionated texts. While the basic variational autoencoder-based models assume a unimodal Gaussian prior for the latent code of sentences, we alternate it with a…

Computation and Language · Computer Science 2021-06-16 Masaru Isonuma , Junichiro Mori , Danushka Bollegala , Ichiro Sakata

Many factors influence speech yielding different renditions of a given sentence. Generative models, such as variational autoencoders (VAEs), capture this variability and allow multiple renditions of the same sentence via sampling. The…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-21 Penny Karanasou , Sri Karlapati , Alexis Moinet , Arnaud Joly , Ammar Abbas , Simon Slangen , Jaime Lorenzo Trueba , Thomas Drugman

Generative autoencoders offer a promising approach for controllable text generation by leveraging their latent sentence representations. However, current models struggle to maintain coherent latent spaces required to perform meaningful text…

Machine Learning · Computer Science 2020-07-08 Tianxiao Shen , Jonas Mueller , Regina Barzilay , Tommi Jaakkola

Variational auto-encoders (VAEs) are deep generative latent variable models that can be used for learning the distribution of complex data. VAEs have been successfully used to learn a probabilistic prior over speech signals, which is then…

Sound · Computer Science 2020-12-18 Mostafa Sadeghi , Simon Leglaive , Xavier Alameda-PIneda , Laurent Girin , Radu Horaud

Conditional Text Generation has drawn much attention as a topic of Natural Language Generation (NLG) which provides the possibility for humans to control the properties of generated contents. Current conditional generation models cannot…

Computation and Language · Computer Science 2020-05-11 Yu Duan , Canwen Xu , Jiaxin Pei , Jialong Han , Chenliang Li

Variational autoencoders (VAEs) have received much attention recently as an end-to-end architecture for text generation with latent variables. In this paper, we investigate several multi-level structures to learn a VAE model to generate…

Computation and Language · Computer Science 2019-06-21 Dinghan Shen , Asli Celikyilmaz , Yizhe Zhang , Liqun Chen , Xin Wang , Jianfeng Gao , Lawrence Carin

Latent variable models for text, when trained successfully, accurately model the data distribution and capture global semantic and syntactic features of sentences. The prominent approach to train such models is variational autoencoders…

Machine Learning · Computer Science 2021-06-09 Bo Pang , Erik Nijkamp , Tian Han , Ying Nian Wu

Gaussian Process (GP) Variational Autoencoders (VAEs) extend standard VAEs by replacing the fully factorised Gaussian prior with a GP prior, thereby capturing richer correlations among latent variables. However, performing exact GP…

Machine Learning · Computer Science 2025-08-18 Xinxing Shi , Xiaoyu Jiang , Mauricio A. Álvarez

This paper explores image caption generation using conditional variational auto-encoders (CVAEs). Standard CVAEs with a fixed Gaussian prior yield descriptions with too little variability. Instead, we propose two models that explicitly…

Computer Vision and Pattern Recognition · Computer Science 2017-11-21 Liwei Wang , Alexander G. Schwing , Svetlana Lazebnik

Sequential recommendation as an emerging topic has attracted increasing attention due to its important practical significance. Models based on deep learning and attention mechanism have achieved good performance in sequential…

Information Retrieval · Computer Science 2021-03-22 Zhe Xie , Chengxuan Liu , Yichi Zhang , Hongtao Lu , Dong Wang , Yue Ding

Multimodal generative models require a unified approach to handle both discrete data (e.g., text and code) and continuous data (e.g., image, audio, video). In this work, we propose Latent Language Modeling (LatentLM), which seamlessly…

Computation and Language · Computer Science 2024-12-12 Yutao Sun , Hangbo Bao , Wenhui Wang , Zhiliang Peng , Li Dong , Shaohan Huang , Jianyong Wang , Furu Wei

Variational Autoencoders (VAEs) are well-established as a principled approach to probabilistic unsupervised learning with neural networks. Typically, an encoder network defines the parameters of a Gaussian distributed latent space from…

Machine Learning · Computer Science 2025-05-16 Alan Jeffares , Liyuan Liu

Extracting insight from the enormous quantity of data generated from molecular simulations requires the identification of a small number of collective variables whose corresponding low-dimensional free-energy landscape retains the essential…

Chemical Physics · Physics 2019-12-30 Yasemin Bozkurt Varolgunes , Tristan Bereau , Joseph F. Rudzinski

Syntactic information contains structures and rules about how text sentences are arranged. Incorporating syntax into text modeling methods can potentially benefit both representation learning and generation. Variational autoencoders (VAEs)…

Computation and Language · Computer Science 2019-08-28 Yijun Xiao , William Yang Wang

Variational autoencoders (VAEs) are powerful deep generative models widely used to represent high-dimensional complex data through a low-dimensional latent space learned in an unsupervised manner. In the original VAE model, the input data…

Machine Learning · Computer Science 2022-07-05 Laurent Girin , Simon Leglaive , Xiaoyu Bie , Julien Diard , Thomas Hueber , Xavier Alameda-Pineda

The Variational Autoencoder (VAE) is a popular and powerful model applied to text modelling to generate diverse sentences. However, an issue known as posterior collapse (or KL loss vanishing) happens when the VAE is used in text modelling,…

Computation and Language · Computer Science 2020-11-04 Ruizhe Li , Xiao Li , Guanyi Chen , Chenghua Lin