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We propose a rejection sampling scheme using the discriminator of a GAN to approximately correct errors in the GAN generator distribution. We show that under quite strict assumptions, this will allow us to recover the data distribution…

机器学习 · 统计学 2019-02-27 Samaneh Azadi , Catherine Olsson , Trevor Darrell , Ian Goodfellow , Augustus Odena

Rejection sampling is a common tool for low dimensional problems ($d \leq 2$), often touted as an "easy" way to obtain valid samples from a distribution $f(\cdot)$ of interest. In practice it is non-trivial to apply, often requiring…

统计计算 · 统计学 2023-10-03 Edward Raff , Mark McLean , James Holt

In this paper, we consider several efficient data structures for the problem of sampling from a dynamically changing discrete probability distribution, where some prior information is known on the distribution of the rates, in particular…

计算工程、金融与科学 · 计算机科学 2021-10-13 Federico D'Ambrosio , Hans L. Bodlaender , Gerard T. Barkema

The Recoil Growth algorithm, proposed in 1999 by Consta et al., is one of the most efficient algorithm available in the literature to sample from a multi-polymer system. Such problems are closely related to the generation of self-avoiding…

计算工程、金融与科学 · 计算机科学 2009-07-02 Florian Simatos

We analyze inexact Riemannian gradient descent (RGD) where Riemannian gradients and retractions are inexactly (and cheaply) computed. Our focus is on understanding when inexact RGD converges and what is the complexity in the general…

最优化与控制 · 数学 2024-05-10 Yuchen Li , Laura Balzano , Deanna Needell , Hanbaek Lyu

This paper investigates distributed zeroth-order optimization for smooth nonconvex problems, targeting the trade-off between convergence rate and sampling cost per zeroth-order gradient estimation in current algorithms that use either the…

最优化与控制 · 数学 2026-04-10 Huaiyi Mu , Yujie Tang , Jie Song , Zhongkui Li

This paper studies $\ell_1$ regularization with high-dimensional features for support vector machines with a built-in reject option (meaning that the decision of classifying an observation can be withheld at a cost lower than that of…

统计理论 · 数学 2012-01-06 Marten Wegkamp , Ming Yuan

Quantum mechanics for many-body systems may be reduced to the evaluation of integrals in 3N dimensions using Monte-Carlo, providing the Quantum Monte Carlo ab initio methods. Here we limit ourselves to expectation values for trial…

计算物理 · 物理学 2010-11-22 John Robert Trail , Ryo Maezono

A fundamental problem in robust learning is asymmetry: a learner needs to correctly classify every one of exponentially-many perturbations that an adversary might make to a test-time natural example. In contrast, the attacker only needs to…

机器学习 · 计算机科学 2024-02-14 Saba Ahmadi , Avrim Blum , Omar Montasser , Kevin Stangl

We present and analyze an algorithm designed for addressing vector-valued regression problems involving possibly infinite-dimensional input and output spaces. The algorithm is a randomized adaptation of reduced rank regression, a technique…

机器学习 · 计算机科学 2024-01-01 Giacomo Turri , Vladimir Kostic , Pietro Novelli , Massimiliano Pontil

Selective classification techniques (also known as reject option) have not yet been considered in the context of deep neural networks (DNNs). These techniques can potentially significantly improve DNNs prediction performance by trading-off…

机器学习 · 计算机科学 2017-06-02 Yonatan Geifman , Ran El-Yaniv

Recent advances in sequence-to-sequence learning reveal a purely data-driven approach to the response generation task. Despite its diverse applications, existing neural models are prone to producing short and generic replies, making it…

计算与语言 · 计算机科学 2019-12-12 Bowen Wu , Nan Jiang , Zhifeng Gao , Mengyuan Li , Zongsheng Wang , Suke Li , Qihang Feng , Wenge Rong , Baoxun Wang

The celebrated minimax principle of Yao (1977) says that for any Boolean-valued function $f$ with finite domain, there is a distribution $\mu$ over the domain of $f$ such that computing $f$ to error $\epsilon$ against inputs from $\mu$ is…

计算复杂性 · 计算机科学 2020-09-21 Shalev Ben-David , Eric Blais

A new variant of Newton's method for empirical risk minimization is studied, where at each iteration of the optimization algorithm, the gradient and Hessian of the objective function are replaced by robust estimators taken from existing…

机器学习 · 统计学 2023-07-18 Eirini Ioannou , Muni Sreenivas Pydi , Po-Ling Loh

Random forests, introduced by Leo Breiman in 2001, are a very effective statistical method. The complex mechanism of the method makes theoretical analysis difficult. Therefore, a simplified version of random forests, called purely random…

统计理论 · 数学 2010-07-28 Robin Genuer

Random feature approximation is arguably one of the most widely used techniques for kernel methods in large-scale learning algorithms. In this work, we analyze the generalization properties of random feature methods, extending previous…

机器学习 · 统计学 2025-06-23 Mike Nguyen , Nicole Mücke

A bias-free source-independent quantum random number generator scheme based on the measurement of vacuum fluctuation is proposed to realize the effective elimination of system bias and common mode noise introduced by the local oscillator.…

量子物理 · 物理学 2020-07-17 Ziyong Zheng , Yi-Chen Zhang , Min Huang , Ziyang Chen , Song Yu , Hong Guo

We consider the problem of selective prediction (also known as reject option) in deep neural networks, and introduce SelectiveNet, a deep neural architecture with an integrated reject option. Existing rejection mechanisms are based mostly…

机器学习 · 计算机科学 2019-06-28 Yonatan Geifman , Ran El-Yaniv

The entropy accumulation theorem states that the smooth min-entropy of an $n$-partite system $A = (A_1, \ldots, A_n)$ is lower-bounded by the sum of the von Neumann entropies of suitably chosen conditional states up to corrections that are…

量子物理 · 物理学 2019-07-23 Frédéric Dupuis , Omar Fawzi

This paper is concerned with the low Tucker-rank tensor completion problem, which is about reconstructing a tensor $ T \in\mathbb{R}^{n\times n \times n}$ of low multilinear rank from partially observed entries. Riemannian optimization…

最优化与控制 · 数学 2023-08-03 Haifeng Wang , Jinchi Chen , Ke Wei