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Similarity search based on a distance function in metric spaces is a fundamental problem for many applications. Queries for similar objects lead to the well-known machine learning task of nearest-neighbours identification. Many data…

Information Retrieval · Computer Science 2022-08-05 Felipe Ortega , Maria Jesus Algar , Isaac Martín de Diego , Javier M. Moguerza

Given a graph, and a set of query vertices (subset of the vertices), the dynamic skyline query problem returns a subset of data vertices (other than query vertices) which are not dominated by other data vertices based on certain distance…

Databases · Computer Science 2020-04-07 Suman Banerjee , Bithika Pal

In this paper, we propose a novel architecture for a deep learning system, named k-degree layer-wise network, to realize efficient geo-distributed computing between Cloud and Internet of Things (IoT). The geo-distributed computing extends…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-01-20 Satoshi Kamo , Yiqiang Sheng

The area of scientific research that deals with the simultaneous optimization of several (possibly conflicting) criteria is named multi-objective optimization. The ability to efficiently filter and extract interesting data out of large…

Databases · Computer Science 2022-02-22 Giovanni Lupi

The problem of optimizing across different, conceivably conflicting, criteria is called multi-objective optimization and it is widely spread across many fields. This is a recurring problem in database queries when there is the need of…

Databases · Computer Science 2022-01-14 Matteo Savino

Many web databases are "hidden" behind proprietary search interfaces that enforce the top-$k$ output constraint, i.e., each query returns at most $k$ of all matching tuples, preferentially selected and returned according to a proprietary…

Databases · Computer Science 2017-05-10 Abolfazl Asudeh , Saravanan Thirumuruganathan , Nan Zhang , Gautam Das

Skyline queries have been widely used as a practical tool for multi-criteria decision analysis and for applications involving preference queries. For example, in a typical online retail application, skyline queries can help customers select…

Databases · Computer Science 2015-03-19 Anastasios Arvanitis , Antonios Deligiannakis

In this paper, we revisit the problem of indexing multi-dimensional data in memory for the efficient support of multi-dimensional range queries and nearest neighbor queries. This is a classic problem in main-memory databases, where there is…

Databases · Computer Science 2026-05-06 Achilleas Michalopoulos , Dimitrios Tsitsigkos , Nikos Mamoulis

Skyline, aiming at finding a Pareto optimal subset of points in a multi-dimensional dataset, has gained great interest due to its extensive use for multi-criteria analysis and decision making. The skyline consists of all points that are not…

Databases · Computer Science 2019-05-03 Wenhui Yu , Jinfei Liu , Jian Pei , Li Xiong , Xu Chen , Zheng Qin

It is now cost-effective to outsource large dataset and perform query over the cloud. However, in this scenario, there exist serious security and privacy issues that sensitive information contained in the dataset can be leaked. The most…

Databases · Computer Science 2020-02-25 Weiguo Wang , Hui Li , Yanguo Peng , Sourav S Bhowmick , Peng Chen , Xiaofeng Chen , Jiangtao Cui

Motivated by the proliferation of Internet-of-Thing (IoT) devices and the rapid advances in the field of deep learning, there is a growing interest in pushing deep learning computations, conventionally handled by the cloud, to the edge of…

Machine Learning · Computer Science 2024-09-25 Marco Palena , Tania Cerquitelli , Carla Fabiana Chiasserini

Machine Intelligence (MI) technologies have revolutionized the design and applications of computational intelligence systems, by introducing remarkable scientific and technological enhancements across domains. MI can improve Internet of…

Computers and Society · Computer Science 2019-08-26 Edgar Ramos , Roberto Morabito , Jani-Pekka Kainulainen

Bipartite graphs, modeling relationships between two types of entities, are widely used in practical applications. Community search, a fundamental problem in bipartite graphs, has gained significant attention. However, existing studies…

Social and Information Networks · Computer Science 2026-04-28 Fangda Guo , Xuanpu Luo , Shiyuan Xu , Haowen Gao , Yanghao Liu , Huawei Shen , Xueqi Cheng

Given a set of $n$ points in a $d$-dimensional space, we seek to compute the skyline, i.e., those points that are not strictly dominated by any other point, using few comparisons between elements. We adopt the noisy comparison model…

Data Structures and Algorithms · Computer Science 2020-04-02 Benoît Groz , Frederik Mallmann-Trenn , Claire Mathieu , Victor Verdugo

Ranking (or top-k) and skyline queries are the most popular approaches used to extract interesting data from large datasets. The first one is based on a scoring function to evaluate and rank tuples. Its computation is fast, but it is…

Databases · Computer Science 2022-05-03 Carlo Bellacoscia

Multi-objective optimization is the problem of optimizing simultaneously multiple objective functions and several techniques exist to deal with this problem. This paper aims to present the main methods that can be used to solve this issue…

Databases · Computer Science 2022-02-08 Giuseppe Tortorelli

The sliding window model of computation captures scenarios in which data is arriving continuously, but only the latest $w$ elements should be used for analysis. The goal is to design algorithms that update the solution efficiently with each…

Data Structures and Algorithms · Computer Science 2020-10-26 Michele Borassi , Alessandro Epasto , Silvio Lattanzi , Sergei Vassilvitskii , Morteza Zadimoghaddam

We consider the problem of computing the \emph{distance-based representative skyline} in the plane, a problem introduced by Tao, Ding, Lin and Pei [Proc. 25th IEEE International Conference on Data Engineering (ICDE), 2009] and independently…

Computational Geometry · Computer Science 2021-01-01 Sergio Cabello

Skyline queries have wide-ranging applications in fields that involve multi-criteria decision making, including tourism, retail industry, and human resources. By automatically removing incompetent candidates, skyline queries allow users to…

Human-Computer Interaction · Computer Science 2018-04-24 Xun Zhao , Yanhong Wu , Weiwei Cui , Xinnan Du , Yuan Chen , Yong Wang , Dik Lun Lee , Huamin Qu

While classical skyline queries identify interesting data within large datasets, flexible skylines introduce preferences through constraints on attribute weights, and further reduce the data returned. However, computing these queries can be…

Databases · Computer Science 2025-01-08 Emilio De Lorenzis , Davide Martinenghi