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Variational Auto-encoders (VAEs) are deep generative latent variable models that are widely used for a number of downstream tasks. While it has been demonstrated that VAE training can suffer from a number of pathologies, existing literature…

机器学习 · 统计学 2022-03-17 Yaniv Yacoby , Weiwei Pan , Finale Doshi-Velez

Competing risk analysis considers event times due to multiple causes, or of more than one event types. Commonly used regression models for such data include 1) cause-specific hazards model, which focuses on modeling one type of event while…

应用统计 · 统计学 2017-04-27 Jiayi Hou , Anthony Paravati , Ronghui Xu , James Murphy

In the field of lung cancer research, particularly in the analysis of overall survival (OS), artificial intelligence (AI) serves crucial roles with specific aims. Given the prevalent issue of missing data in the medical domain, our primary…

机器学习 · 计算机科学 2026-03-13 Camillo Maria Caruso , Valerio Guarrasi , Sara Ramella , Paolo Soda

Wide accessibility of imaging and profile sensors in modern industrial systems created an abundance of high-dimensional sensing variables. This led to a a growing interest in the research of high-dimensional process monitoring. However,…

机器学习 · 计算机科学 2022-08-15 Nurettin Sergin , Hao Yan

Sampling trajectories from a distribution followed by ranking them based on a specified cost function is a common approach in autonomous driving. Typically, the sampling distribution is hand-crafted (e.g a Gaussian, or a grid). Recently,…

机器人学 · 计算机科学 2024-04-26 Simon Idoko , Basant Sharma , Arun Kumar Singh

As deep Variational Auto-Encoder (VAE) frameworks become more widely used for modeling biomolecular simulation data, we emphasize the capability of the VAE architecture to concurrently maximize the timescale of the latent space while…

化学物理 · 物理学 2021-12-08 Hannah K. Wayment-Steele , Vijay S. Pande

In recent years, the field of machine learning has made phenomenal progress in the pursuit of simulating real-world data generation processes. One notable example of such success is the variational autoencoder (VAE). In this work, with a…

机器学习 · 统计学 2021-12-30 Hwan Goh , Sheroze Sheriffdeen , Jonathan Wittmer , Tan Bui-Thanh

Variational Autoencoders (VAE) are probabilistic deep generative models underpinned by elegant theory, stable training processes, and meaningful manifold representations. However, they produce blurry images due to a lack of explicit…

计算机视觉与模式识别 · 计算机科学 2019-11-15 Prashnna K Gyawali , Rudra Saha , Linwei Wang , VSR Veeravasarapu , Maneesh Singh

Automatic speaker verification (ASV) systems are highly vulnerable to presentation attacks, also called spoofing attacks. Replay is among the simplest attacks to mount - yet difficult to detect reliably. The generalization failure of…

音频与语音处理 · 电气工程与系统科学 2020-03-24 Bhusan Chettri , Tomi Kinnunen , Emmanouil Benetos

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

Survival analysis provides a well-established framework for modeling time-to-event data, with hazard and survival functions formally defined as population-level quantities. In applied work, however, these quantities are often interpreted as…

统计方法学 · 统计学 2026-03-26 Xijia Liu

Deep Learning (DL) methods have dramatically increased in popularity in recent years. While its initial success was demonstrated in the classification and manipulation of image data, there has been significant growth in the application of…

机器学习 · 计算机科学 2022-06-22 David K. Lim , Naim U. Rashid , Junier B. Oliva , Joseph G. Ibrahim

We propose a novel deep learning approach to nonparametric statistical inference for the conditional hazard function of survival time with right-censored data. We use a deep neural network (DNN) to approximate the logarithm of a conditional…

统计方法学 · 统计学 2024-10-24 Wen Su , Kin-Yat Liu , Guosheng Yin , Jian Huang , Xingqiu Zhao

Integrating the different data modalities of cancer patients can significantly improve the predictive performance of patient survival. However, most existing methods ignore the simultaneous utilization of rich semantic features at different…

计算机视觉与模式识别 · 计算机科学 2024-05-14 Liangrui Pan , Yijun Peng , Yan Li , Yiyi Liang , Liwen Xu , Qingchun Liang , Shaoliang Peng

Self-supervised disentangled representation learning is a critical task in sequence modeling. The learnt representations contribute to better model interpretability as well as the data generation, and improve the sample efficiency for…

机器学习 · 计算机科学 2021-10-26 Junwen Bai , Weiran Wang , Carla Gomes

The unpredictable nature of outdoor settings introduces numerous safety concerns, making hazard detection crucial for safe navigation. This paper introduces a novel system for sidewalk safety navigation utilizing a hybrid approach that…

计算机视觉与模式识别 · 计算机科学 2025-01-03 Edgar Guzman , Robert D. Howe

Variational autoencoders (VAEs) have recently been used for unsupervised disentanglement learning of complex density distributions. Numerous variants exist to encourage disentanglement in latent space while improving reconstruction.…

机器学习 · 统计学 2022-06-10 Kenneth Ezukwoke , Anis Hoayek , Mireille Batton-Hubert , Xavier Boucher

Due to the phenomenon of "posterior collapse," current latent variable generative models pose a challenging design choice that either weakens the capacity of the decoder or requires augmenting the objective so it does not only maximize the…

机器学习 · 计算机科学 2019-01-14 Ali Razavi , Aäron van den Oord , Ben Poole , Oriol Vinyals

A disentangled representation of a data set should be capable of recovering the underlying factors that generated it. One question that arises is whether using Euclidean space for latent variable models can produce a disentangled…

机器学习 · 计算机科学 2020-03-23 Luis A. Pérez Rey

Semi-supervised learning is sought for leveraging the unlabelled data when labelled data is difficult or expensive to acquire. Deep generative models (e.g., Variational Autoencoder (VAE)) and semisupervised Generative Adversarial Networks…

机器学习 · 计算机科学 2019-05-09 Xiang Zhang , Lina Yao , Feng Yuan