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Variational Autoencoders (VAEs) have recently been highly successful at imputing and acquiring heterogeneous missing data. However, within this specific application domain, existing VAE methods are restricted by using only one layer of…

机器学习 · 计算机科学 2022-12-23 Ignacio Peis , Chao Ma , José Miguel Hernández-Lobato

Text-based Question Generation (QG) aims at generating natural and relevant questions that can be answered by a given answer in some context. Existing QG models suffer from a "semantic drift" problem, i.e., the semantics of the…

计算与语言 · 计算机科学 2019-09-16 Shiyue Zhang , Mohit Bansal

Variational autoencoder (VAE) neural networks can be trained to generate power system states that capture both marginal distribution and multivariate dependencies of historical data. The coordinates of the latent space codes of VAEs have…

系统与控制 · 电气工程与系统科学 2023-03-22 Chenguang Wang , Ensieh Sharifnia , Simon H. Tindemans , Peter Palensky

Previous entity disambiguation (ED) methods adopt a discriminative paradigm, where prediction is made based on matching scores between mention context and candidate entities using length-limited encoders. However, these methods often…

计算与语言 · 计算机科学 2023-11-07 Zilin Xiao , Linjun Shou , Xingyao Zhang , Jie Wu , Ming Gong , Jian Pei , Daxin Jiang

Variational autoencoders (VAEs) have ushered in a new era of unsupervised learning methods for complex distributions. Although these techniques are elegant in their approach, they are typically not useful for representation learning. In…

机器学习 · 计算机科学 2020-01-10 Ali Lotfi Rezaabad , Sriram Vishwanath

Cross-modal retrieval is to utilize one modality as a query to retrieve data from another modality, which has become a popular topic in information retrieval, machine learning, and database. How to effectively measure the similarity between…

信息检索 · 计算机科学 2021-12-07 Jiwei Zhang , Yi Yu , Suhua Tang , Jianming Wu , Wei Li

The variational autoencoder (VAE) framework remains a popular option for training unsupervised generative models, especially for discrete data where generative adversarial networks (GANs) require workaround to create gradient for the…

机器学习 · 计算机科学 2019-04-24 Jason Chou , Gautam Hathi

Pre-trained Generative models such as BART, T5, etc. have gained prominence as a preferred method for text generation in various natural language processing tasks, including abstractive long-form question answering (QA) and summarization.…

计算与语言 · 计算机科学 2023-11-07 Prabir Mallick , Tapas Nayak , Indrajit Bhattacharya

This paper describes InfoCatVAE, an extension of the variational autoencoder that enables unsupervised disentangled representation learning. InfoCatVAE uses multimodal distributions for the prior and the inference network and then maximizes…

机器学习 · 计算机科学 2018-06-26 Edouard Pineau , Marc Lelarge

The field of visual question answering (VQA) has recently seen a surge in research focused on providing explanations for predicted answers. However, current systems mostly rely on separate models to predict answers and generate…

计算与语言 · 计算机科学 2023-02-14 Chenxi Whitehouse , Tillman Weyde , Pranava Madhyastha

Many problems in machine learning and related application areas are fundamentally variants of conditional modeling and sampling across multi-aspect data, either multi-view, multi-modal, or simply multi-group. For example, sampling from the…

机器学习 · 计算机科学 2018-06-26 Samuel K. Ainsworth , Nicholas J. Foti , Emily B. Fox

Learning disentanglement aims at finding a low dimensional representation which consists of multiple explanatory and generative factors of the observational data. The framework of variational autoencoder (VAE) is commonly used to…

机器学习 · 计算机科学 2023-12-20 Mengyue Yang , Furui Liu , Zhitang Chen , Xinwei Shen , Jianye Hao , Jun Wang

Unsupervised meta-learning aims to learn the meta knowledge from unlabeled data and rapidly adapt to novel tasks. However, existing approaches may be misled by the context-bias (e.g. background) from the training data. In this paper, we…

机器学习 · 计算机科学 2023-02-21 Guodong Qi , Huimin Yu

Recommendation models are typically trained on observational user interaction data, but the interactions between latent factors in users' decision-making processes lead to complex and entangled data. Disentangling these latent factors to…

信息检索 · 计算机科学 2023-04-18 Siyu Wang , Xiaocong Chen , Quan Z. Sheng , Yihong Zhang , Lina Yao

Variational autoencoders (VAEs) are fundamental for generative modeling and image reconstruction, yet their performance often struggles to maintain high fidelity in reconstructions. This study introduces a hybrid model, quantum variational…

计算机视觉与模式识别 · 计算机科学 2025-03-10 Farina Riaz , Fakhar Zaman , Hajime Suzuki , Sharif Abuadbba , David Nguyen

Variational Autoencoders (VAEs) were originally motivated (Kingma & Welling, 2014) as probabilistic generative models in which one performs approximate Bayesian inference. The proposal of $\beta$-VAEs (Higgins et al., 2017) breaks this…

机器学习 · 统计学 2023-02-10 Tim Z. Xiao , Robert Bamler

We propose AutoQA, a methodology and toolkit to generate semantic parsers that answer questions on databases, with no manual effort. Given a database schema and its data, AutoQA automatically generates a large set of high-quality questions…

计算与语言 · 计算机科学 2021-06-09 Silei Xu , Sina J. Semnani , Giovanni Campagna , Monica S. Lam

This paper aims at improving how machines can answer questions directly from text, with the focus of having models that can answer correctly multiple types of questions and from various types of texts, documents or even from large…

计算与语言 · 计算机科学 2018-04-30 Martin Raison , Pierre-Emmanuel Mazaré , Rajarshi Das , Antoine Bordes

Inverse problems aim to determine model parameters of a mathematical problem from given observational data. Neural networks can provide an efficient tool to solve these problems. In the context of Bayesian inverse problems, Uncertainty…

数值分析 · 数学 2025-09-16 Andrea Tonini , Tan Bui-Thanh , Francesco Regazzoni , Luca Dede' , Alfio Quarteroni

Question Answering (QA) is a growing area of research, often used to facilitate the extraction of information from within documents. State-of-the-art QA models are usually pre-trained on domain-general corpora like Wikipedia and thus tend…

计算与语言 · 计算机科学 2022-12-01 Matthew Maufe , James Ravenscroft , Rob Procter , Maria Liakata