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In this work we present a new simple but efficient scheme - Subsquares approach - for development of algorithms for enclosing the solution set of overdetermined interval linear systems. We are going to show two algorithms based on this…

数值分析 · 计算机科学 2013-05-07 Jaroslav Horáček , Milan Hladík

The structure-preserving doubling algorithm (SDA) is a fairly efficient method for solving problems closely related to Hamiltonian (or Hamiltonian-like) matrices, such as computing the required solutions to algebraic Riccati equations.…

数值分析 · 数学 2020-05-19 Zhen-Chen Guo , Eric King-Wah Chu , Xin Liang , Wen-Wei Lin

The suffix trees are fundamental data structures for various kinds of string processing. The suffix tree of a text string $T$ of length $n$ has $O(n)$ nodes and edges, and the string label of each edge is encoded by a pair of positions in…

数据结构与算法 · 计算机科学 2023-12-06 Diptarama Hendrian , Takuya Takagi , Shunsuke Inenaga , Keisuke Goto , Mitsuru Funakoshi

We propose a simple linear-time on-line algorithm for constructing a position heap for a string [Ehrenfeucht et al, 2011]. Our definition of position heap differs slightly from the one proposed in [Ehrenfeucht et al, 2011] in that it…

数据结构与算法 · 计算机科学 2015-03-19 Gregory Kucherov

We study the stochastic optimization of canonical correlation analysis (CCA), whose objective is nonconvex and does not decouple over training samples. Although several stochastic gradient based optimization algorithms have been recently…

机器学习 · 计算机科学 2016-11-15 Weiran Wang , Jialei Wang , Dan Garber , Nathan Srebro

Dual-species single-atom array in optical tweezers has several advantages over the single-species atom array as a platform for quantum computing and quantum simulation. Thus, creating the defect-free dual-species single-atom array with atom…

量子物理 · 物理学 2022-07-27 Zhi-Jin Tao , Li-Geng Yu , Peng-Xu , Jia-Yi Hou , Xiao-Dong He , Ming-Sheng Zhan

We introduce AdaSub, a stochastic optimization algorithm that computes a search direction based on second-order information in a low-dimensional subspace that is defined adaptively based on available current and past information. Compared…

最优化与控制 · 数学 2023-11-08 João Victor Galvão da Mata , Martin S. Andersen

Given an input $x$, and a search problem $F$, local computation algorithms (LCAs) implement access to specified locations of $y$ in a legal output $y \in F(x)$, using polylogarithmic time and space. Mansour et al., (2012), had previously…

数据结构与算法 · 计算机科学 2014-04-23 Omer Reingold , Shai Vardi

Graph neural networks have achieved state-of-the-art accuracy for graph node classification. However, GNNs are difficult to scale to large graphs, for example frequently encountering out-of-memory errors on even moderate size graphs. Recent…

机器学习 · 计算机科学 2022-10-26 Ziyuan Wang , Feiming Yang , Rui Fan

Based on the Breslauer-Italiano online suffix tree construction algorithm (2013) with double logarithmic worst-case guarantees on the update time per letter, we develop near-real-time algorithms for several classical problems on strings,…

数据结构与算法 · 计算机科学 2026-02-18 Dominik Köppl , Gregory Kucherov

SCAN (Structural Clustering Algorithm for Networks) is a well-studied, widely used graph clustering algorithm. For large graphs, however, sequential SCAN variants are prohibitively slow, and parallel SCAN variants do not effectively share…

数据库 · 计算机科学 2021-04-01 Tom Tseng , Laxman Dhulipala , Julian Shun

Stochastic gradient descent (SGD) algorithm and its variations have been effectively used to optimize neural network models. However, with the rapid growth of big data and deep learning, SGD is no longer the most suitable choice due to its…

机器学习 · 计算机科学 2024-02-13 Anuraganand Sharma

In this paper, we show that SVRG and SARAH can be modified to be fundamentally faster than all of the other standard algorithms that minimize the sum of $n$ smooth functions, such as SAGA, SAG, SDCA, and SDCA without duality. Most finite…

最优化与控制 · 数学 2018-05-22 Robert Hannah , Yanli Liu , Daniel O'Connor , Wotao Yin

This work, for the first time, introduces two constant factor approximation algorithms with linear query complexity for non-monotone submodular maximization over a ground set of size $n$ subject to a knapsack constraint, $\mathsf{DLA}$ and…

数据结构与算法 · 计算机科学 2023-07-11 Canh V. Pham , Tan D. Tran , Dung T. K. Ha , My T. Thai

This paper introduces a novel and efficient partitioning technique for quicksort, specifically designed for real-world data with duplicate elements (50-year-old problem). The method is referred to as "equal quicksort" or "eqsort". Based on…

数据结构与算法 · 计算机科学 2025-03-12 Parviz Afereidoon

Sparse coding (SC) is attracting more and more attention due to its comprehensive theoretical studies and its excellent performance in many signal processing applications. However, most existing sparse coding algorithms are nonconvex and…

机器学习 · 计算机科学 2017-09-12 Xiaodong Feng , Zhiwei Tang , Sen Wu

We consider the problem of encoding a string of length $n$ from an integer alphabet of size $\sigma$ so that access and substring equality queries (that is, determining the equality of any two substrings) can be answered efficiently. Any…

数据结构与算法 · 计算机科学 2020-05-12 Nicola Prezza

Structured prediction tasks pose a fundamental trade-off between the need for model complexity to increase predictive power and the limited computational resources for inference in the exponentially-sized output spaces such models require.…

机器学习 · 统计学 2012-08-17 David Weiss , Benjamin Sapp , Ben Taskar

We revisit the popular \emph{delayed deterministic finite automaton} (\ddfa{}) compression algorithm introduced by Kumar~et~al.~[SIGCOMM 2006] for compressing deterministic finite automata (DFAs) used in intrusion detection systems. This…

数据结构与算法 · 计算机科学 2024-11-26 Philip Bille , Inge Li Gørtz , Max Rishøj Pedersen

We introduce deterministic suffix-reading automata (DSA), a new automaton model over finite words. Transitions in a DSA are labeled with words. From a state, a DSA triggers an outgoing transition on seeing a word ending with the…

形式语言与自动机理论 · 计算机科学 2024-10-31 R Keerthan , B Srivathsan , R Venkatesh , Sagar Verma