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Quantum algorithms typically demand prohibitively complicated circuits to solve practical problems. Previous studies have shown that classical randomness can accelerate some specific quantum algorithms. In this work, we introduce the…

量子物理 · 物理学 2026-01-15 Yue Wang , Qi Zhao

Quantization can drastically increase the efficiency of large language and vision models, but typically incurs an accuracy drop. Recently, function-preserving transforms (e.g. rotations, Hadamard transform, channel-wise scaling) have been…

机器学习 · 计算机科学 2026-03-05 Marco Federici , Boris van Breugel , Paul Whatmough , Markus Nagel

Large language models require massive memory footprints, severely limiting deployment on consumer hardware. Quantization reduces memory through lower numerical precision, but extreme 2-bit quantization suffers from catastrophic performance…

机器学习 · 计算机科学 2026-02-12 Bingxin Xu , Zhen Dong , Oussama Elachqar , Yuzhang Shang

Finding the eigenstates of the total Hamiltonian H or its diagonalization is the important problem of quantum physics. However, in relativistic quantum field theory (RQFT) its complete and exact solution is possible for a few simple models…

核理论 · 物理学 2016-09-08 A. V. Shebeko , M. I. Shirokov

Random Reshuffling (RR) is an algorithm for minimizing finite-sum functions that utilizes iterative gradient descent steps in conjunction with data reshuffling. Often contrasted with its sibling Stochastic Gradient Descent (SGD), RR is…

最优化与控制 · 数学 2021-04-06 Konstantin Mishchenko , Ahmed Khaled , Peter Richtárik

Unitary $k$-designs are distributions of unitary gates that match the Haar distribution up to its $k$-th statistical moment. They are a crucial resource for randomized quantum protocols. However, their implementation on encoded logical…

量子物理 · 物理学 2025-08-25 Zihan Cheng , Eric Huang , Vedika Khemani , Michael J. Gullans , Matteo Ippoliti

Transformers have demonstrated strong potential in offline reinforcement learning (RL) by modeling trajectories as sequences of return-to-go, states, and actions. However, existing approaches such as the Decision Transformer(DT) and its…

机器学习 · 计算机科学 2025-10-27 Zhuojing Tian , Yushu Chen

Fourier Holographic Reduced Representations (FHRR) provide a compositional framework for encoding structured information with complex-valued hypervectors. FHRR rely on floating-point arithmetic, which limits their efficiency and…

计算物理 · 物理学 2026-04-30 Shay Snyder , Hamed Poursiami , Maryam Parsa

Several recent randomized linear algebra algorithms rely upon fast dimension reduction methods. A popular choice is the Subsampled Randomized Hadamard Transform (SRHT). In this article, we address the efficacy, in the Frobenius and spectral…

数据结构与算法 · 计算机科学 2015-03-20 Christos Boutsidis , Alex Gittens

We explore a very simple distribution of unitaries: random (binary) phase -- Hadamard -- random (binary) phase -- random computational-basis permutation. We show that this distribution is statistically indistinguishable from random Haar…

量子物理 · 物理学 2024-04-18 Zvika Brakerski , Nir Magrafta

Quantizing images into discrete representations has been a fundamental problem in unified generative modeling. Predominant approaches learn the discrete representation either in a deterministic manner by selecting the best-matching token or…

计算机视觉与模式识别 · 计算机科学 2023-10-17 Jiahui Zhang , Fangneng Zhan , Christian Theobalt , Shijian Lu

Ridge regression (RR) is an important machine learning technique which introduces a regularization hyperparameter $\alpha$ to ordinary multiple linear regression for analyzing data suffering from multicollinearity. In this paper, we present…

量子物理 · 物理学 2021-08-03 Chao-Hua Yu , Fei Gao , Qiao-Yan Wen

Quantum control in large dimensional Hilbert spaces is essential for realizing the power of quantum information processing. For closed quantum systems the relevant input/output maps are unitary transformations, and the fundamental challenge…

量子物理 · 物理学 2014-10-17 B. E. Anderson , H. Sosa-Martinez , C. A. Riofrío , I. H. Deutsch , P. S. Jessen

Random Reshuffling (RR), which is a variant of Stochastic Gradient Descent (SGD) employing sampling without replacement, is an immensely popular method for training supervised machine learning models via empirical risk minimization. Due to…

机器学习 · 计算机科学 2022-05-11 Grigory Malinovsky , Peter Richtárik

Rapidly Exploring Random Tree (RRT) algorithms, notably used for nonholonomic vehicle navigation in complex environments, are often not thoroughly evaluated for their specific challenges. This paper presents a first such comparison study of…

机器人学 · 计算机科学 2025-01-14 Trym Tengesdal , Tom Arne Pedersen , Tor Arne Johansen

Vector quantile regression (VQR) is an optimal transport (OT) problem subject to a mean-independence constraint that extends classical linear quantile regression to vector response variables. Motivated by computational considerations, prior…

统计理论 · 数学 2026-02-17 Kengo Kato , Boyu Wang

Current test- or compression-time adaptation image compression (TTA-IC) approaches, which leverage both latent and decoder refinements as a two-step adaptation scheme, have potentially enhanced the rate-distortion (R-D) performance of…

计算机视觉与模式识别 · 计算机科学 2024-10-17 Kecheng Chen , Pingping Zhang , Tiexin Qin , Shiqi Wang , Hong Yan , Haoliang Li

The Tensor-Train (TT) format is a highly compact low-rank representation for high-dimensional tensors. TT is particularly useful when representing approximations to the solutions of certain types of parametrized partial differential…

The unpivoted and pivoted Householder QR factorizations are ubiquitous in numerical linear algebra. A difficulty with pivoted Householder QR is the communication bottleneck introduced by pivoting. In this paper we propose using random…

数值分析 · 数学 2017-03-08 Stephen Becker , James Folberth , Laura Grigori

This paper studies fixed-rate randomized vector quantization under the constraint that the quantizer's output has a given fixed probability distribution. A general representation of randomized quantizers that includes the common models in…

信息论 · 计算机科学 2016-11-15 Naci Saldi , Tamás Linder , Serdar Yüksel