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The problem of analyzing data streams of very large volumes is important and is very desirable for many application domains. In this paper we present and demonstrate effective working of an algorithm to find clusters and anomalous data…

机器学习 · 计算机科学 2025-03-25 Aniket Bhanderi , Raj Bhatnagar

A longstanding observation, which was partially proven in \cite{LNW14,AHLW16}, is that any turnstile streaming algorithm can be implemented as a linear sketch (the reverse is trivially true). We study the relationship between turnstile…

数据结构与算法 · 计算机科学 2021-01-06 John Kallaugher , Eric Price

Stream processing applications extract value from raw data through Directed Acyclic Graphs of data analysis tasks. Shared-nothing (SN) parallelism is the de-facto standard to scale stream processing applications. Given an application, SN…

Structured pruning and quantization are promising approaches for reducing the inference time and memory footprint of neural networks. However, most existing methods require the original training dataset to fine-tune the model. This not only…

机器学习 · 计算机科学 2023-08-15 Shipeng Bai , Jun Chen , Xintian Shen , Yixuan Qian , Yong Liu

Diffusion models are a powerful framework for tackling ill-posed problems, with recent advancements extending their use to point cloud upsampling. Despite their potential, existing diffusion models struggle with inefficiencies as they map…

计算机视觉与模式识别 · 计算机科学 2025-01-28 Zhi-Song Liu , Chenhang He , Lei Li

Today's large-scale services (e.g., video streaming platforms, data centers, sensor grids) need diverse real-time summary statistics across multiple subpopulations of multidimensional datasets. However, state-of-the-art frameworks do not…

数据库 · 计算机科学 2022-08-10 Antonis Manousis , Zhuo Cheng , Ran Ben Basat , Zaoxing Liu , Vyas Sekar

Clustering is a fundamental task in machine learning. One of the most successful and broadly used algorithms is DBSCAN, a density-based clustering algorithm. DBSCAN requires $\epsilon$-nearest neighbor graphs of the input dataset, which are…

分布式、并行与集群计算 · 计算机科学 2024-09-12 Youguang Chen , William Ruys , George Biros

This paper resolves one of the longest standing basic problems in the streaming computational model. Namely, optimal construction of quantile sketches. An $\varepsilon$ approximate quantile sketch receives a stream of items $x_1,\ldots,x_n$…

数据结构与算法 · 计算机科学 2016-04-07 Zohar Karnin , Kevin Lang , Edo Liberty

DBSCAN is one of the most important non-parametric unsupervised data analysis tools. By applying DBSCAN to a dataset, two key analytical results can be obtained: (1) clustering data points based on density distribution and (2) identifying…

计算机视觉与模式识别 · 计算机科学 2024-12-04 Yongyu Wang

This paper introduces a novel formulation of the clustering problem, namely the Minimum Sum-of-Squares Clustering of Infinitely Tall Data (MSSC-ITD), and presents HPClust, an innovative set of hybrid parallel approaches for its effective…

分布式、并行与集群计算 · 计算机科学 2024-06-26 Ravil Mussabayev , Rustam Mussabayev

Streaming graphs are drawing increasing attention in both academic and industrial communities as many graphs in real applications evolve over time. Continuous subgraph matching (shorted as CSM) aims to report the incremental matches of a…

数据结构与算法 · 计算机科学 2023-04-26 Rongjian Yang , Zhijie Zhang , Weiguo Zheng , Jeffery Xu Yu

Modern inference and learning often hinge on identifying low-dimensional structures that approximate large scale data. Subspace clustering achieves this through a union of linear subspaces. However, in contemporary applications data is…

机器学习 · 计算机科学 2018-08-03 Daniel L. Pimentel-Alarcón , Usman Mahmood

Hierarchical Density-Based Spatial Clustering of Applications with Noise (HDBSCAN) finds meaningful patterns in spatial data by considering density and spatial proximity. As the clustering algorithm is inherently designed for static…

数据库 · 计算机科学 2024-12-12 Kayumov Abduaziz , Min Sik Kim , Ji Sun Shin

Distributed stream processing frameworks help building scalable and reliable applications that perform transformations and aggregations on continuous data streams. This paper introduces ShuffleBench, a novel benchmark to evaluate the…

软件工程 · 计算机科学 2024-03-08 Sören Henning , Adriano Vogel , Michael Leichtfried , Otmar Ertl , Rick Rabiser

We consider sequential change-point detection in parallel data streams, where each stream has its own change point. Once a change is detected in a data stream, this stream is deactivated permanently. The goal is to maximize the normal…

统计理论 · 数学 2021-07-15 Yunxiao Chen , Xiaoou Li

While differentially private synthetic data generation has been explored extensively in the literature, how to update this data in the future if the underlying private data changes is much less understood. We propose an algorithmic…

密码学与安全 · 计算机科学 2024-09-04 Girish Kumar , Thomas Strohmer , Roman Vershynin

Accelerator architectures specialize in executing SIMD (single instruction, multiple data) in lockstep. Because the majority of CUDA applications are parallelized loops, control flow information can provide an in-depth characterization of a…

分布式、并行与集群计算 · 计算机科学 2019-03-25 Robert Lim , Boyana Norris , Allen Malony

Exa-scale simulations are on the horizon but almost no new design for the output has been proposed in recent years. In simulations using individual time steps, the traditional snapshots are over resolving particles/cells with large time…

天体物理仪器与方法 · 物理学 2022-10-25 Loic Hausammann , Pedro Gonnet , Matthieu Schaller

While traditional data-management systems focus on evaluating single, ad-hoc queries over static data sets in a centralized setting, several emerging applications require (possibly, continuous) answers to queries on dynamic data that is…

数据库 · 计算机科学 2015-03-20 Odysseas Papapetrou , Minos Garofalakis , Antonios Deligiannakis

Datacenter networks commonly facilitate the transmission of data in distributed computing frameworks through coflows, which are collections of parallel flows associated with a common task. Most of the existing research has concentrated on…

分布式、并行与集群计算 · 计算机科学 2023-10-24 Olivier Brun , Rachid El-Azouzi , Quang-Trung Luu , Francesco De Pellergrini , Balakrishna J. Prabhu , Cédric Richier