中文
相关论文

相关论文: Ulam Sphere Size Analysis for Permutation and Mult…

200 篇论文

A covering code is a set of codewords with the property that the union of balls, suitably defined, around these codewords covers an entire space. Generally, the goal is to find the covering code with the minimum size codebook. While most…

信息论 · 计算机科学 2020-05-26 Andreas Lenz , Cyrus Rashtchian , Paul H. Siegel , Eitan Yaakobi

We propose a new Write-Once-Memory (WOM) coding scheme based on source polarization. By applying a source polarization transformation on the to-be-determined codeword, the proposed WOM coding scheme encodes information into the bits in the…

信息论 · 计算机科学 2014-10-28 Xudong Ma

Data is compressed by reducing its redundancy, but this also makes the data less reliable, more prone to errors. In this paper a novel approach of image compression based on a new method that has been created for image compression which is…

计算机视觉与模式识别 · 计算机科学 2012-11-21 Firas A. Jassim , Hind E. Qassim

Parametrized measures (or Young measures) enable to reformulate non-convex variational problems as convex problems at the cost of enlarging the search space from space of functions to space of measures. To benefit from such machinery, we…

数值分析 · 数学 2025-11-04 Rayehe Karimi Mahabadi , Jianfeng Lu , Hossein Salahshoor

Determining the optimal number and identity of structural clusters from an ensemble of molecular configurations continues to be a challenge. Recent structural clustering methods have focused on the use of internal coordinates due to the…

化学物理 · 物理学 2023-01-11 Heidi Klem , Glen M. Hocky , Martin McCullagh

We study perfect codes in the sum-rank metric, a generalization of both the Hamming and rank metrics relevant in multishot network coding and space-time coding. A perfect code attains equality in the sphere-packing bound, corresponding to a…

信息论 · 计算机科学 2025-08-29 Giuseppe Del Prete , Antonio Roccolano , Ferdinando Zullo

We introduce a single-number metric, quantum volume, that can be measured using a concrete protocol on near-term quantum computers of modest size ($n\lesssim 50$), and measure it on several state-of-the-art transmon devices, finding values…

量子物理 · 物理学 2019-10-14 Andrew W. Cross , Lev S. Bishop , Sarah Sheldon , Paul D. Nation , Jay M. Gambetta

Clues to the shape of our Universe can be found by searching the CMB for matching circles of temperature patterns. A full sky search of the CMB, mapped extremely accurately by NASA's WMAP satellite, returned no detection of such matching…

天体物理学 · 物理学 2008-11-26 Joey Shapiro Key , Neil J. Cornish , David N. Spergel , Glenn D. Starkman

An interleaver is a critical component for the channel coding performance of turbo codes. Algebraic constructions are important because they admit analytical designs and simple, practical hardware implementation. The spread factor of an…

信息论 · 计算机科学 2016-11-17 Oscar Y. Takeshita

Large Language Models (LLMs) are increasingly deployed on edge devices with Neural Processing Units (NPUs), yet the decode phase remains memory-intensive, limiting performance. Processing-in-Memory (PIM) offers a promising solution, but…

分布式、并行与集群计算 · 计算机科学 2026-05-18 Hai Huang

Large language models (LLMs) have transformed artificial intelligence, yet classical architectures impose a fundamental constraint: every trainable parameter demands classical memory that scales unfavourably with model size. Quantum…

In this paper, we propose two methods of calculating theoretically maximal metamer mismatch volumes. Unlike prior art techniques, our methods do not make any assumptions on the shape of spectra on the boundary of the mismatch volumes. Both…

计算几何 · 计算机科学 2019-01-25 Michal Mackiewicz , Hans Jakob Rivertz , Graham D. Finlayson

Modular quantum computing architectures require error correction schemes that remain effective in the presense of noisy inter-processor operations. We introduce a distributed quantum error correction framework based on approximate codes to…

量子物理 · 物理学 2025-11-05 Connor Clayton , Bruno Avritzer

This paper presents a low-complexity near-maximum-likelihood-detection (near-MLD) algorithm called one-bit-sphere-decoding for an uplink massive multiple-input multiple-output (MIMO) system with one-bit analog-to-digital converters (ADCs).…

信息论 · 计算机科学 2017-12-20 Yo-Seb Jeon , Namyoon Lee , Song-Nam Hong , Robert W. Heath

A new lower bound on the average reconstruction error variance of multidimensional sampling and reconstruction is presented. It applies to sampling on arbitrary lattices in arbitrary dimensions, assuming a stochastic process with constant,…

信息论 · 计算机科学 2018-06-19 Erik Agrell , Balázs Csébfalvi

The recovery of training data from generative models ("model inversion") has been extensively studied for diffusion models in the data domain as a memorization/overfitting phenomenon. Latent diffusion models (LDMs), which operate on the…

机器学习 · 计算机科学 2026-03-26 Mingxing Rao , Bowen Qu , Daniel Moyer

A closed-form formula for the nonlinear interference estimation of arbitrary modulation formats in ultra-wideband transmission systems is presented. Enabled by the proposed approach, the formula is applied to the entire S+C+L band (20 THz)…

信号处理 · 电气工程与系统科学 2020-06-11 Daniel Semrau , Lidia Galdino , Eric Sillekens , Domanic Lavery , Robert I. Killey , Polina Bayvel

We consider bounds on codes in spherical caps and related problems in geometry and coding theory. An extension of the Delsarte method is presented that relates upper bounds on the size of spherical codes to upper bounds on codes in caps.…

度量几何 · 数学 2007-07-16 Alexander Barg , Oleg R. Musin

The ability to store multiple optical modes in a quantum memory allows for increased efficiency of quantum communication and computation. Here we compute the multimode capacity of a variety of quantum memory protocols based on light storage…

量子物理 · 物理学 2009-01-12 J. Nunn , K. Reim , K. C. Lee , V. O. Lorenz , B. Sussman , I. A. Walmsley , D. Jaksch

The densest local packing (DLP) problem in d-dimensional Euclidean space Rd involves the placement of N nonoverlapping spheres of unit diameter near an additional fixed unit-diameter sphere such that the greatest distance from the center of…

统计力学 · 物理学 2015-05-18 A. B. Hopkins , F. H. Stillinger , S. Torquato