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We investigate spatio-temporal event analysis using point processes. Inferring the dynamics of event sequences spatiotemporally has many practical applications including crime prediction, social media analysis, and traffic forecasting. In…

机器学习 · 计算机科学 2021-02-17 Fatih Ilhan , Suleyman Serdar Kozat

Numerous approximation algorithms for problems on unit disk graphs have been proposed in the literature, exhibiting a sharp trade-off between running times and approximation ratios. We introduce a variation of the known shifting strategy…

数据结构与算法 · 计算机科学 2016-11-08 Guilherme D. da Fonseca , Vinícius G. Pereira de Sá , Celina M. H. de Figueiredo

We propose two algorithms for discrete-time parameter estimation, one for time-varying parameters under persistent excitation (PE) condition, another for constant parameters under no PE condition. For the first algorithm, we show that in…

机器学习 · 计算机科学 2022-03-15 Yingnan Cui , Joseph E. Gaudio , Anuradha M. Annaswamy

Simulating time evolution of generic quantum many-body systems using classical numerical approaches has an exponentially growing cost either with evolution time or with the system size. In this work, we present a polynomially scaling hybrid…

量子物理 · 物理学 2023-09-18 Nikita Astrakhantsev , Sheng-Hsuan Lin , Frank Pollmann , Adam Smith

The Hurst exponent is a significant metric for characterizing time sequences with long-term memory property and it arises in many fields. The available methods for estimating the Hurst exponent can be categorized into time-domain and…

统计方法学 · 统计学 2024-12-23 Hong-Yan Zhang , Zhi-Qiang Feng , Si-Yu Feng , Yu Zhou

We extract a core principle underlying seemingly different fundamental distributed settings, showing sparsity awareness may induce faster algorithms for problems in these settings. To leverage this, we establish a new framework by…

分布式、并行与集群计算 · 计算机科学 2021-12-01 Keren Censor-Hillel , Dean Leitersdorf , Volodymyr Polosukhin

Large-scale graph processing has drawn great attention in recent years. Most of the modern-day datacenter workloads can be represented in the form of Graph Processing such as MapReduce etc. Consequently, a lot of designs for Domain-Specific…

硬件体系结构 · 计算机科学 2022-09-07 Khushal Sethi

The advantages of evolutionary algorithms with respect to traditional methods have been greatly discussed in the literature. While particle swarm optimizers share such advantages, they outperform evolutionary algorithms in that they require…

神经与进化计算 · 计算机科学 2021-01-28 Johann Sienz , Mauro S. Innocente

Although spatio-temporal graph neural networks have achieved great empirical success in handling multiple correlated time series, they may be impractical in some real-world scenarios due to a lack of sufficient high-quality training data.…

信号处理 · 电气工程与系统科学 2021-02-10 Chao Pan , Siheng Chen , Antonio Ortega

By a high-order numerical homogenization method, a heterogeneous multiscale scheme was developed in Jin & Li (2022) for evolving differential equations containing two time scales. In this paper, we further explore the technique to propose…

数值分析 · 数学 2025-09-25 Bojin Chen , Zeyu Jin , Ruo Li

Persistent homology is a popular and powerful tool for capturing topological features of data. Advances in algorithms for computing persistent homology have reduced the computation time drastically -- as long as the algorithm does not…

计算几何 · 计算机科学 2013-10-03 Ulrich Bauer , Michael Kerber , Jan Reininghaus

We developed a flexible parallel algorithm for graph summarization based on vertex-centric programming and parameterized message passing. The base algorithm supports infinitely many structural graph summary models defined in a formal…

数据结构与算法 · 计算机科学 2022-11-07 Till Blume , Jannik Rau , David Richerby , Ansgar Scherp

Multi-core machines are ubiquitous. However, most inductive logic programming (ILP) approaches use only a single core, which severely limits their scalability. To address this limitation, we introduce parallel techniques based on…

人工智能 · 计算机科学 2021-09-16 Andrew Cropper , Oghenejokpeme Orhobor , Cristian Dinu , Rolf Morel

This article firstly attempts to explore parallel algorithms of learning distributed representations for both entities and relations in large-scale knowledge repositories with {\it MapReduce} programming model on a multi-core processor. We…

分布式、并行与集群计算 · 计算机科学 2015-09-04 Miao Fan , Qiang Zhou , Thomas Fang Zheng , Ralph Grishman

In distributed and federated learning algorithms, communication overhead is often reduced by performing multiple local updates between communication rounds. However, due to data heterogeneity across nodes and the local gradient noise within…

机器学习 · 计算机科学 2025-12-02 Yan Huang , Jinming Xu , Jiming Chen , Karl Henrik Johansson

Time distributed optimization is an implementation strategy that can significantly reduce the computational burden of model predictive control by exploiting its robustness to incomplete optimization. When using this strategy, optimization…

最优化与控制 · 数学 2020-04-14 Dominic Liao-McPherson , Marco Nicotra , Ilya Kolmanovsky

Digital quantum simulation relies on Trotterization to discretize time evolution into elementary quantum gates. On current quantum processors with notable gate imperfections, there is a critical tradeoff between improved accuracy for finer…

量子物理 · 物理学 2024-07-09 Hongzheng Zhao , Marin Bukov , Markus Heyl , Roderich Moessner

In this paper, we study the distributed adaptive estimation problem of continuous-time stochastic dynamic systems over sensor networks where each agent can only communicate with its local neighbors. A distributed least squares (LS)…

系统与控制 · 电气工程与系统科学 2023-09-07 Xinghua Zhu , Zhixin Liu

The parareal in time algorithm allows to efficiently use parallel computing for the simulation of time-dependent problems. It is based on a decomposition of the time interval into subintervals, and on a predictor-corrector strategy, where…

数值分析 · 数学 2010-11-30 X. Dai , C. Le Bris , F. Legoll , Y. Maday

To get a good understanding of a dynamical system, it is convenient to have an interpretable and versatile model of it. Timed discrete event systems are a kind of model that respond to these requirements. However, such models can be…

人工智能 · 计算机科学 2023-06-21 Lénaïg Cornanguer , Christine Largouët , Laurence Rozé , Alexandre Termier