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We introduce a new survival tree method for censored failure time data that incorporates three key advancements over traditional approaches. First, we develop a more computationally efficient splitting procedure that effectively mitigates…

统计方法学 · 统计学 2025-09-24 Ruiwen Zhou , Ke Xie , Lei Liu , Zhichen Xu , Jimin Ding , Xiaogang Su

This paper analyzes the stability of interconnected continuous-time (CT) and discrete-time (DT) systems coupled through sampling and zero-order hold mechanisms. The DT system updates its output at regular intervals $T>0$ by applying an…

系统与控制 · 电气工程与系统科学 2026-01-05 Yiting Chen , Francesco Bullo , Emiliano Dall'Anese

In data-intensive real-time applications, such as smart transportation and manufacturing, ensuring data freshness is essential, as using obsolete data can lead to negative outcomes. Validity intervals serve as the standard means to specify…

数据库 · 计算机科学 2024-07-31 Kyoung-Don Kang

In real life, media information has time attributes either implicitly or explicitly known as temporal data. This paper investigates the usefulness of applying Bayesian classification to an interval encoded temporal database with prioritized…

数据库 · 计算机科学 2009-08-10 C. Balasubramanian , K. Duraiswamy

The aim of this paper is to examine and demonstrate how integer-based datetime labels (integer surrogate keys for time) can optimize data-warehouse and time-series performance, proposing practical formats and algorithms and validating their…

数据库 · 计算机科学 2025-11-19 Sviatoslav Stumpf , Vladislav Povyshev

Temporal network data are increasingly available in various domains, and often represent highly complex systems with intricate structural and temporal evolutions. Due to the difficulty of processing such complex data, it may be useful to…

物理与社会 · 物理学 2023-05-08 Chanon Thongprayoon , Lorenzo Livi , Naoki Masuda

Age of Information is a newly introduced metric, getting vivid attention for measuring the freshness of information in real-time networks. This parameter has evolved to guarantee the reception of timely information from the latest status…

性能 · 计算机科学 2021-01-25 Devarpita Sinha , Rajarshi Roy

In the age of big data, more and more applications need to query and analyse large volumes of continuously updated data in real-time. In response, cloud-scale storage systems can extend their interface that allows fast lookups on the…

分布式、并行与集群计算 · 计算机科学 2018-01-10 Dimitrios Vasilas

Time-limited states characterise many dynamical processes on networks: disease infected individuals recover after some time, people forget news spreading on social networks, or passengers may not wait forever for a connection. These…

物理与社会 · 物理学 2023-06-13 Arash Badie-Modiri , Márton Karsai , Mikko Kivelä

A tree-packing is a collection of spanning trees of a graph. It has been a useful tool for computing the minimum cut in static, dynamic, and distributed settings. In particular, [Thorup, Comb. 2007] used them to obtain his dynamic min-cut…

数据结构与算法 · 计算机科学 2024-12-05 Tijn de Vos , Aleksander B. G. Christiansen

The quick and pervasive infiltration of decision support systems, artificial intelligence, and data mining in consumer electronics and everyday life in general has been significant in recent years. Fields such as UX have been facilitating…

数据库 · 计算机科学 2018-04-13 Giovanni Vincenti

Index structures are one of the most important tools that DBAs leverage to improve the performance of analytics and transactional workloads. However, building several indexes over large datasets can often become prohibitive and consume…

数据库 · 计算机科学 2020-03-26 Alex Galakatos , Michael Markovitch , Carsten Binnig , Rodrigo Fonseca , Tim Kraska

This work unifies insights from the systems and functional programming communities, in order to enable compositional reasoning about software which is nonetheless efficiently realizable in hardware. It exploits a correspondence between…

分布式、并行与集群计算 · 计算机科学 2020-03-18 Thomas Dickerson

We present a data structure that in a dynamic graph of treedepth at most $d$, which is modified over time by edge insertions and deletions, maintains an optimum-height elimination forest. The data structure achieves worst-case update time…

Survival analysis studies and predicts the time of death, or other singular unrepeated events, based on historical data, while the true time of death for some instances is unknown. Survival trees enable the discovery of complex nonlinear…

机器学习 · 计算机科学 2024-01-10 Tim Huisman , Jacobus G. M. van der Linden , Emir Demirović

The pairing heap is a simple "self-adjusting" implementation of a heap (priority queue). Inserting an item into a pairing heap or decreasing the key of an item takes O(1) time worst-case, as does melding two heaps. But deleting an item of…

数据结构与算法 · 计算机科学 2022-08-26 Corwin Sinnamon , Robert Tarjan

Real world networks exhibit rich temporal information: friends are added and removed over time in online social networks; the seasons dictate the predator-prey relationship in food webs; and the propagation of a virus depends on the network…

Leaking information about the execution behavior of critical real-time tasks may lead to serious consequences, including violations of temporal constraints and even severe failures. We study information leakage for a special class of…

分布式、并行与集群计算 · 计算机科学 2025-06-05 Mohammad Fakhruddin Babar , Zain A. H. Hammadeh , Mohammad Hamad , Monowar Hasan

In this paper, a new and novel data structure is proposed to dynamically insert and delete segments. Unlike the standard segment trees[3], the proposed data structure permits insertion of a segment with interval range beyond the interval…

计算几何 · 计算机科学 2015-01-15 K. S. Easwarakumar , T. Hema

Managing perishable products with limited lifetimes is a fundamental challenge in inventory management, as poor ordering decisions can quickly lead to stockouts or excessive waste. We study a perishable inventory system with random lead…

机器学习 · 计算机科学 2026-01-23 Xuan Liao , Zhenkang Peng , Ying Rong