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Modern large-scale scientific applications consist of thousands to millions of individual tasks. These tasks involve not only computation but also communication with one another. Typically, the communication pattern between tasks is sparse…

分布式、并行与集群计算 · 计算机科学 2025-04-03 Christian Schulz , Henning Woydt

Organizing large-scale resources in a multidimensional semantic space is an approach to efficiently managing and querying resources from different semantic dimensions. To support advanced applications, this paper proposes a resource space…

数据库 · 计算机科学 2026-05-26 Xiaoping Sun , Hai Zhuge

In this paper we present GeoThinneR, an R package for efficient and flexible spatial thinning of species occurrence data. Spatial thinning is a widely used preprocessing step in species distribution modeling (SDM) that can help reduce…

种群与进化 · 定量生物学 2025-05-14 J. Mestre-Tomás

Objective: To (1) demonstrate the implementation of a data science platform built on open-source technology within a large, academic healthcare system and (2) describe two computational healthcare applications built on such a platform.…

Hash codes are a very efficient data representation needed to be able to cope with the ever growing amounts of data. We introduce a random forest semantic hashing scheme with information-theoretic code aggregation, showing for the first…

计算机视觉与模式识别 · 计算机科学 2015-04-20 Qiang Qiu , Guillermo Sapiro , Alex Bronstein

We present TeraPart, a memory-efficient multilevel graph partitioning method that is designed to scale to extremely large graphs. In balanced graph partitioning, the goal is to divide the vertices into $k$ blocks with balanced size while…

数据结构与算法 · 计算机科学 2024-10-28 Daniel Salwasser , Daniel Seemaier , Lars Gottesbüren , Peter Sanders

Non-Gaussian spatial and spatio-temporal data are becoming increasingly prevalent, and their analysis is needed in a variety of disciplines. FRK is an R package for spatial/spatio-temporal modelling and prediction with very large data sets…

统计计算 · 统计学 2022-11-22 Matthew Sainsbury-Dale , Andrew Zammit-Mangion , Noel Cressie

In this paper, we outline our work on developing a disk-based infrastructure for efficient visualization and graph exploration operations over very large graphs. The proposed platform, called graphVizdb, is based on a novel technique for…

人机交互 · 计算机科学 2015-06-18 Nikos Bikakis , John Liagouris , Maria Krommyda , George Papastefanatos , Timos Sellis

Trajectory planning for quadrotors in cluttered environments has been challenging in recent years. While many trajectory planning frameworks have been successful, there still exists potential for improvements, particularly in enhancing the…

机器人学 · 计算机科学 2024-06-17 Pengyu Wang , Jiawei Tang , Hin Wang Lin , Fan Zhang , Chaoqun Wang , Jiankun Wang , Ling Shi , Max Q. -H. Meng

Dimension reduction is widely regarded as an effective way for decreasing the computation, storage and communication loads of data-driven intelligent systems, leading to a growing demand for statistical methods that allow analysis (e.g.,…

计算机视觉与模式识别 · 计算机科学 2019-08-23 Guangcan Liu , Zhao Zhang , Qingshan Liu , Kongkai Xiong

The era of big data has led to the emergence of new systems for real-time distributed stream processing, e.g., Apache Storm is one of the most popular stream processing systems in industry today. However, Storm, like many other stream…

分布式、并行与集群计算 · 计算机科学 2019-04-12 Boyang Peng , Mohammad Hosseini , Zhihao Hong , Reza Farivar , Roy Campbell

We introduce random spatial forests, a method of bagging regression trees allowing for spatial correlation. Our main contribution is the development of a computationally efficient tree building algorithm which selects each split of the tree…

统计方法学 · 统计学 2020-07-24 Travis Hee Wai , Michael T. Young , Adam A. Szpiro

Random Indexing (RI) K-tree is the combination of two algorithms for clustering. Many large scale problems exist in document clustering. RI K-tree scales well with large inputs due to its low complexity. It also exhibits features that are…

信息检索 · 计算机科学 2010-02-02 Christopher M. De Vries , Lance De Vine , Shlomo Geva

K-core decomposition is a commonly used metric to analyze graph structure or study the relative importance of nodes in complex graphs. Recent years have seen rapid growth in the scale of the graph, especially in industrial settings. For…

分布式、并行与集群计算 · 计算机科学 2022-01-03 Shicheng Gao , Jie Xu , Xiaosen Li , Fangcheng Fu , Wentao Zhang , Wen Ouyang , Yangyu Tao , Bin Cui

Several organizations, like social networks, store and routinely analyze large graphs as part of their daily operation. Such graphs are typically distributed across multiple servers, and graph partitioning is critical for efficient graph…

分布式、并行与集群计算 · 计算机科学 2015-02-03 Claudio Martella , Dionysios Logothetis , Andreas Loukas , Georgos Siganos

In this paper we propose a new approach for Big Data mining and analysis. This new approach works well on distributed datasets and deals with data clustering task of the analysis. The approach consists of two main phases, the first phase…

分布式、并行与集群计算 · 计算机科学 2018-03-05 Malika Bendechache , Nhien-An Le-Khac , M-Tahar Kechadi

Due to privacy concerns, multi-party gradient tree boosting algorithms have become widely popular amongst machine learning researchers and practitioners. However, limited existing works have focused on vertically partitioned datasets, and…

密码学与安全 · 计算机科学 2022-02-08 Kennedy Edemacu , Beakcheol Jang , Jong Wook Kim

This paper proposes an efficient hypergraph partitioning framework based on a novel multi-objective non-convex constrained relaxation model. A modified accelerated proximal gradient algorithm is employed to generate diverse $k$-dimensional…

机器学习 · 计算机科学 2025-09-29 Yingying Li , Mingxuan Xie , Hailong You , Yongqiang Yao , Hongwei Liu

The use of large-scale machine learning methods is becoming ubiquitous in many applications ranging from business intelligence to self-driving cars. These methods require a complex computation pipeline consisting of various types of…

数据库 · 计算机科学 2021-11-10 Yongyang Yu , Mingjie Tang , Walid G. Aref

Graph partitioning (GP) is a classic problem that divides the node set of a graph into densely-connected blocks. Following the IEEE HPEC Graph Challenge and recent advances in pre-training techniques (e.g., large-language models), we…

机器学习 · 计算机科学 2024-09-04 Meng Qin , Chaorui Zhang , Yu Gao , Yibin Ding , Weipeng Jiang , Weixi Zhang , Wei Han , Bo Bai