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Quasi-Monte Carlo methods are used for numerically integrating multivariate functions. However, the error bounds for these methods typically rely on a priori knowledge of some semi-norm of the integrand, not on the sampled function values.…

数值分析 · 数学 2015-10-27 Lluís Antoni Jiménez Rugama , Fred J. Hickernell

We analyze the factorization process for lattice maps, searching for integrable cases. The maps were assumed to be at most quadratic in the dependent variables, and we required minimal factorization (one linear factor) after 2 steps of…

可精确求解与可积系统 · 物理学 2011-05-27 Jarmo Hietarinta , Claude Viallet

A new construction is proposed for low density parity check (LDPC) codes using quadratic permutation polynomials over finite integer rings. The associated graphs for the new codes have both algebraic and pseudo-random nature, and the new…

信息论 · 计算机科学 2007-07-13 Oscar Y. Takeshita

LDPC lattices were the first family of lattices that equipped with iterative decoding algorithms under which they perform very well in high dimensions. In this paper, we introduce quasi cyclic low density parity check (QC-LDPC) lattices as…

信息论 · 计算机科学 2016-03-24 Hassan Khodaiemehr , Mohammad-Reza Sadeghi , Amin Sakzad

We study multivariate integration of functions that are invariant under permutations (of subsets) of their arguments. We find an upper bound for the $n$th minimal worst case error and show that under certain conditions, it can be bounded…

数值分析 · 数学 2015-03-10 Dirk Nuyens , Gowri Suryanarayana , Markus Weimar

This review gives an overview on the research of algorithms for dynamical fermions used in large scale lattice QCD simulations. First a short overview on the state-of-the-art of ensemble generation at the physical point is given. Followed…

高能物理 - 格点 · 物理学 2024-02-20 Jacob Finkenrath

The weighted star discrepancy is a quantitative measure for the performance of point sets in quasi-Monte Carlo algorithms for numerical integration. We consider polynomial lattice point sets, whose generating vectors can be obtained by a…

数论 · 数学 2020-05-28 Ralph Kritzinger , Helene Laimer , Mario Neumüller

Strict inequalities in mixed-integer linear optimization can cause difficulties in guaranteeing convergence and exactness. Utilizing that optimal vertex solutions follow a lattice structure we propose a rounding rule for strict inequalities…

最优化与控制 · 数学 2024-10-30 Katrin Halbig , Timm Oertel , Dieter Weninger

Lattice data structures are space efficient and cache-suitable data structures. The basic searching, insertion, and deletion operations are of time complexity $O(\sqrt{N})$. We give a jump searching algorithm of time complexity…

数据结构与算法 · 计算机科学 2016-05-16 Mohammad Obiedat

Importance Sampling (IS), an effective variance reduction strategy in Monte Carlo (MC) simulation, is frequently utilized for Bayesian inference and other statistical challenges. Quasi-Monte Carlo (QMC) replaces the random samples in MC…

数值分析 · 数学 2024-03-19 Zhijian He , Hejin Wang , Xiaoqun Wang

A non-perturbative algebraic theory of lattice Boltzmann method is developed based on a symmetry of a product. It involves three steps: (i) Derivation of admissible lattices in one spatial dimension through a matching condition which…

统计力学 · 物理学 2015-05-14 Ilya Karlin , Shyam Chikatamarla , Pietro Asinari

Choosing the optimization algorithm that performs best on a given machine learning problem is often delicate, and there is no guarantee that current state-of-the-art algorithms will perform well across all tasks. Consequently, the more…

最优化与控制 · 数学 2024-06-25 Måns Williamson , Monika Eisenmann , Tony Stillfjord

Exact approximations of Markov chain Monte Carlo (MCMC) algorithms are a general emerging class of sampling algorithms. One of the main ideas behind exact approximations consists of replacing intractable quantities required to run standard…

统计计算 · 统计学 2015-10-30 Christophe Andrieu , Matti Vihola

We consider rank-1 lattices for integration and reconstruction of functions with series expansion supported on a finite index set. We explore the connection between the periodic Fourier space and the non-periodic cosine space and Chebyshev…

数值分析 · 数学 2020-08-11 Frances Y. Kuo , Giovanni Migliorati , Fabio Nobile , Dirk Nuyens

In this article, we consider the problem of approximating a finite set of data (usually huge in applications) by invariant subspaces generated through a small set of smooth functions. The invariance is either by translations under a…

最优化与控制 · 数学 2023-11-22 Davide Barbieri , Eugenio Hernández , Carlos Cabrelli , Ursula Molter

The $\mathcal{L}_2$ discrepancy is one of several well-known quantitative measures for the equidistribution properties of point sets in the high-dimensional unit cube. The concept of weights was introduced by Sloan and Wo\'{z}niakowski to…

数值分析 · 数学 2019-12-09 Takashi Goda

We present an algorithm for generating all derivative superstructures--for arbitrary parent structures and for any number of atom types. This algorithm enumerates superlattices and atomic configurations in a geometry-independent way. The…

材料科学 · 物理学 2014-12-18 Gus L. W. Hart , Rodney W. Forcade

A key goal in the design of probabilistic inference algorithms is identifying and exploiting properties of the distribution that make inference tractable. Lifted inference algorithms identify symmetry as a property that enables efficient…

人工智能 · 计算机科学 2019-07-02 Steven Holtzen , Todd Millstein , Guy Van den Broeck

In this paper we give explicit constructions of point sets in the $s$ dimensional unit cube yielding quasi-Monte Carlo algorithms which achieve the optimal rate of convergence of the worst-case error for numerically integrating high…

数值分析 · 数学 2013-04-02 Josef Dick

We describe a class of growth algorithms for finding low energy states of heteropolymers. These polymers form toy models for proteins, and the hope is that similar methods will ultimately be useful for finding native states of real proteins…

软凝聚态物质 · 物理学 2007-05-23 Peter Grassberger