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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…

Audio and Speech Processing · Electrical Eng. & Systems 2021-03-10 Mostafa Sadeghi , Xavier Alameda-Pineda

Retrieval-Augmented Generation (RAG) improves Large Language Models (LLMs) by grounding generation in external, non-parametric knowledge. However, when a task requires choosing among competing options, simply grounding generation in broadly…

Computation and Language · Computer Science 2026-03-20 Hangeol Chang , Changsun Lee , Seungjoon Rho , Junho Yeo , Jong Chul Ye

We propose a sequential variational autoencoder to learn disentangled representations of sequential data (e.g., videos and audios) under self-supervision. Specifically, we exploit the benefits of some readily accessible supervisory signals…

Computer Vision and Pattern Recognition · Computer Science 2020-05-26 Yizhe Zhu , Martin Renqiang Min , Asim Kadav , Hans Peter Graf

Query rewriting (QR) systems are widely used to reduce the friction caused by errors in a spoken language understanding pipeline. However, the underlying supervised models require a large number of labeled pairs, and these pairs are hard…

Computation and Language · Computer Science 2020-12-22 Yunmo Chen , Sixing Lu , Fan Yang , Xiaojiang Huang , Xing Fan , Chenlei Guo

The emerging citation-based QA systems are gaining more attention especially in generative AI search applications. The importance of extracted knowledge provided to these systems is vital from both accuracy (completeness of information) and…

Question answering (QA) tasks have been posed using a variety of formats, such as extractive span selection, multiple choice, etc. This has led to format-specialized models, and even to an implicit division in the QA community. We argue…

Computation and Language · Computer Science 2020-10-08 Daniel Khashabi , Sewon Min , Tushar Khot , Ashish Sabharwal , Oyvind Tafjord , Peter Clark , Hannaneh Hajishirzi

Motivated by suggested question generation in conversational news recommendation systems, we propose a model for generating question-answer pairs (QA pairs) with self-contained, summary-centric questions and length-constrained,…

Computation and Language · Computer Science 2021-09-13 Li Zhou , Kevin Small , Yong Zhang , Sandeep Atluri

We propose a new class of physics-informed neural networks, called physics-informed Variational Autoencoder (PI-VAE), to solve stochastic differential equations (SDEs) or inverse problems involving SDEs. In these problems the governing…

Machine Learning · Statistics 2022-11-09 Weiheng Zhong , Hadi Meidani

Longitudinal datasets measured repeatedly over time from individual subjects, arise in many biomedical, psychological, social, and other studies. A common approach to analyse high-dimensional data that contains missing values is to learn a…

Machine Learning · Statistics 2021-04-21 Siddharth Ramchandran , Gleb Tikhonov , Kalle Kujanpää , Miika Koskinen , Harri Lähdesmäki

Variational autoencoders (VAEs) are essential tools in end-to-end representation learning. However, the sequential text generation common pitfall with VAEs is that the model tends to ignore latent variables with a strong auto-regressive…

Machine Learning · Computer Science 2021-02-26 Yang Zhao , Ping Yu , Suchismit Mahapatra , Qinliang Su , Changyou Chen

Neural conversation models such as encoder-decoder models are easy to generate bland and generic responses. Some researchers propose to use the conditional variational autoencoder(CVAE) which maximizes the lower bound on the conditional…

Computation and Language · Computer Science 2019-11-25 Jun Gao , Wei Bi , Xiaojiang Liu , Junhui Li , Guodong Zhou , Shuming Shi

We publicly release a new large-scale dataset, called SearchQA, for machine comprehension, or question-answering. Unlike recently released datasets, such as DeepMind CNN/DailyMail and SQuAD, the proposed SearchQA was constructed to reflect…

Computation and Language · Computer Science 2017-06-13 Matthew Dunn , Levent Sagun , Mike Higgins , V. Ugur Guney , Volkan Cirik , Kyunghyun Cho

Closed-book question answering (QA) requires a model to directly answer an open-domain question without access to any external knowledge. Prior work on closed-book QA either directly finetunes or prompts a pretrained language model (LM) to…

Computation and Language · Computer Science 2023-04-28 Dan Su , Mostofa Patwary , Shrimai Prabhumoye , Peng Xu , Ryan Prenger , Mohammad Shoeybi , Pascale Fung , Anima Anandkumar , Bryan Catanzaro

Variational Autoencoders (VAEs) have been a pioneering force in the realm of deep generative models. Amongst its legions of progenies, Wasserstein Autoencoders (WAEs) stand out in particular due to the dual offering of heightened generative…

Machine Learning · Statistics 2023-12-12 Anish Chakrabarty , Arkaprabha Basu , Swagatam Das

Variational AutoEncoders (VAEs) are powerful generative models that merge elements from statistics and information theory with the flexibility offered by deep neural networks to efficiently solve the generation problem for high dimensional…

Machine Learning · Computer Science 2021-03-02 A. Asperti , D. Evangelista , E. Loli Piccolomini

This paper presents an emotion-regularized conditional variational autoencoder (Emo-CVAE) model for generating emotional conversation responses. In conventional CVAE-based emotional response generation, emotion labels are simply used as…

Computation and Language · Computer Science 2021-04-20 Yu-Ping Ruan , Zhen-Hua Ling

GPT-2 has been frequently adapted in story generation models as it provides powerful generative capability. However, it still fails to generate consistent stories and lacks diversity. Current story generation models leverage additional…

Computation and Language · Computer Science 2021-11-17 Zhuohan Xie , Trevor Cohn , Jey Han Lau

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

Machine reading comprehension with unanswerable questions is a challenging task. In this work, we propose a data augmentation technique by automatically generating relevant unanswerable questions according to an answerable question paired…

Computation and Language · Computer Science 2019-06-17 Haichao Zhu , Li Dong , Furu Wei , Wenhui Wang , Bing Qin , Ting Liu

Multi-Hop Question Answering (MHQA) is crucial for evaluating the model's capability to integrate information from diverse sources. However, creating extensive and high-quality MHQA datasets is challenging: (i) manual annotation is…

Computation and Language · Computer Science 2026-04-21 Zhiyu Shen , Jiyuan Liu , Yunhe Pang , Yanghui Rao , Fu Lee Wang , Jianxing Yu