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We explore methods for option discovery based on variational inference and make two algorithmic contributions. First: we highlight a tight connection between variational option discovery methods and variational autoencoders, and introduce…

人工智能 · 计算机科学 2018-07-30 Joshua Achiam , Harrison Edwards , Dario Amodei , Pieter Abbeel

Learning disentangled and interpretable representations is an important step towards accomplishing comprehensive data representations on the manifold. In this paper, we propose a novel representation learning algorithm which combines the…

机器学习 · 计算机科学 2021-07-13 Fei Ye , Adrian G. Bors

Variational inference has become a widely used method to approximate posteriors in complex latent variables models. However, deriving a variational inference algorithm generally requires significant model-specific analysis, and these…

机器学习 · 统计学 2014-01-03 Rajesh Ranganath , Sean Gerrish , David M. Blei

We consider stochastic zero-order optimization problems, which arise in settings from simulation optimization to reinforcement learning. We propose an adaptive sampling quasi-Newton method where we estimate the gradients of a stochastic…

最优化与控制 · 数学 2019-10-31 Raghu Bollapragada , Stefan M. Wild

Visual anomaly detection targets to detect images that notably differ from normal pattern, and it has found extensive application in identifying defective parts within the manufacturing industry. These anomaly detection paradigms…

计算机视觉与模式识别 · 计算机科学 2024-11-15 Anindya Sundar Das , Guansong Pang , Monowar Bhuyan

Optimally trading-off exploration and exploitation is the holy grail of reinforcement learning as it promises maximal data-efficiency for solving any task. Bayes-optimal agents achieve this, but obtaining the belief-state and performing…

Venn Prediction (VP) is a new machine learning framework for producing well-calibrated probabilistic predictions. In particular it provides well-calibrated lower and upper bounds for the conditional probability of an example belonging to…

机器学习 · 计算机科学 2023-12-18 Harris Papadopoulos

In this paper, we design and analyze a new family of adaptive subgradient methods for solving an important class of weakly convex (possibly nonsmooth) stochastic optimization problems. Adaptive methods that use exponential moving averages…

最优化与控制 · 数学 2020-05-26 Parvin Nazari , Davoud Ataee Tarzanagh , George Michailidis

Variance reduction is a family of powerful mechanisms for stochastic optimization that appears to be helpful in many machine learning tasks. It is based on estimating the exact gradient with some recursive sequences. Previously, many papers…

最优化与控制 · 数学 2025-11-07 Aleksandr Shestakov , Valery Parfenov , Aleksandr Beznosikov

Optimization of high-dimensional black-box functions is an extremely challenging problem. While Bayesian optimization has emerged as a popular approach for optimizing black-box functions, its applicability has been limited to…

机器学习 · 统计学 2018-08-06 Zi Wang , Chengtao Li , Stefanie Jegelka , Pushmeet Kohli

This work addresses the problem of temporal action localization with Variance-Aware Networks (VAN), i.e., DNNs that use second-order statistics in the input and/or the output of regression tasks. We first propose a network (VANp) that when…

计算机视觉与模式识别 · 计算机科学 2020-08-27 Ting-Ting Xie , Christos Tzelepis , Ioannis Patras

Evolutionary artificial neural networks (EANNs) refer to a special class of artificial neural networks (ANNs) in which evolution is another fundamental form of adaptation in addition to learning. Evolutionary algorithms are used to adapt…

人工智能 · 计算机科学 2016-11-17 Ajith Abraham

Multi-task learning (MTL) is a common paradigm that seeks to improve the generalization performance of task learning by training related tasks simultaneously. However, it is still a challenging problem to search the flexible and accurate…

机器学习 · 计算机科学 2019-11-20 Yingru Liu , Xuewen Yang , Dongliang Xie , Xin Wang , Li Shen , Haozhi Huang , Niranjan Balasubramanian

In this work, we aim to establish a Bayesian adaptive learning framework by focusing on estimating latent variables in deep neural network (DNN) models. Latent variables indeed encode both transferable distributional information and…

音频与语音处理 · 电气工程与系统科学 2024-01-26 Hu Hu , Sabato Marco Siniscalchi , Chin-Hui Lee

Natural Evolution Strategies (NES) is a promising framework for black-box continuous optimization problems. NES optimizes the parameters of a probability distribution based on the estimated natural gradient, and one of the key parameters…

神经与进化计算 · 计算机科学 2022-02-08 Masahiro Nomura , Isao Ono

As one of the most popular generative models, Variational Autoencoder (VAE) approximates the posterior of latent variables based on amortized variational inference. However, when the decoder network is sufficiently expressive, VAE may lead…

机器学习 · 计算机科学 2021-10-26 Dazhong Shen , Chuan Qin , Chao Wang , Hengshu Zhu , Enhong Chen , Hui Xiong

Deep neural network ensembles are powerful tools for uncertainty quantification, which have recently been re-interpreted from a Bayesian perspective. However, current methods inadequately leverage second-order information of the loss…

机器学习 · 统计学 2024-11-05 Klemens Flöge , Mohammed Abdul Moeed , Vincent Fortuin

Stochastic variational inference and its derivatives in the form of variational autoencoders enjoy the ability to perform Bayesian inference on large datasets in an efficient manner. However, performing inference with a VAE requires a…

神经与进化计算 · 计算机科学 2023-08-17 Ahmad Ayaz Amin

Variational autoencoder (VAE) is a deep generative model for unsupervised learning, allowing to encode observations into the meaningful latent space. VAE is prone to catastrophic forgetting when tasks arrive sequentially, and only the data…

机器学习 · 计算机科学 2021-11-04 Anna Kuzina , Evgenii Egorov , Evgeny Burnaev

Adversarial Training (AT) and Virtual Adversarial Training (VAT) are the regularization techniques that train Deep Neural Networks (DNNs) with adversarial examples generated by adding small but worst-case perturbations to input examples. In…

机器学习 · 计算机科学 2020-06-24 Xiulong Yang , Shihao Ji