Browsing Laboratorio de Bases de Datos (LBD) by Title
Now showing items 1-20 of 100
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3DGraCT: A Grammar-Based Compressed Representation of 3D Trajectories
(Springer, 2018)[Abstract]: Much research has been published about trajectory management on the ground or at the sea, but compression or indexing of flight trajectories have usually been less explored. However, air traffic management is ... -
A Compact Representation of Indoor Trajectories
(IEEE, 2022-01)[Abstract]: We present a system that combines indoor positioning with a compression algorithm for trajectories in the context of a nursing home. Our aim is to gather and effectively represent the location of the residents ... -
A New Method to Index and Store Spatio-Temporal Data
(2016-11-16)[Abstract] We propose a data structure that stores, in a compressed way, object trajectories, which at the same time, allow to efficiently response queries without the need to decompress the data. We use a data structure, ... -
A Novel Two-Phase Approach to Forest Harvesting Optimization Using Cable Logging
(Multidisciplinary Digital Publishing Institute (MDPI), 2023-11)[Abstract]: Timber extraction is a vital process in forest harvesting, particularly in areas with high slopes where timber harvesting methods are not feasible. In such cases, logging towers employing extraction cables are ... -
A practical succinct dynamic graph representation
(Elsevier Inc., 2022-05)[Abstract]: We address the problem of representing dynamic graphs using k2-trees. The k2-tree data structure is one of the succinct data structures proposed for representing static graphs, and binary relations in general. ... -
A Public Domain Dataset for Real-Life Human Activity Recognition Using Smartphone Sensors
(MDPI AG, 2020-04-13)[Abstract] In recent years, human activity recognition has become a hot topic inside the scientific community. The reason to be under the spotlight is its direct application in multiple domains, like healthcare or fitness. ... -
A succinct data structure for self-indexing ternary relations
(Elsevier BV, 2016-10-27)[Abstract] The representation of binary relations has been intensively studied and many different theoretical and practical representations have been proposed to answer the usual queries in multiple domains. However, ternary ... -
Accessible Routes Integrating Data from Multiple Sources
(MDPI AG, 2020-12-26)[Abstract] Providing citizens with the ability to move around in an accessible way is a requirement for all cities today. However, modeling city infrastructures so that accessible routes can be computed is a challenge ... -
Aggregated 2D range queries on clustered points
(Elsevier Ltd, 2016-09)[Abstract] Efficient processing of aggregated range queries on two-dimensional grids is a common requirement in information retrieval and data mining systems, for example in Geographic Information Systems and OLAP cubes. ... -
An Action Research for Improving the Sustainability Assessment Framework Instruments
(MDPI AG, 2020-02-24)[Abstract] In the last years, software engineering researchers have defined sustainability as a quality requirement of software, but not enough effort has been devoted to develop new methods/techniques to support the ... -
An Architecture for Software Engineering Gamification
(Qinghua Daxue Xuebao Bianjibu,Tsinghua University, Editorial Board, 2020-05-07)[Abstract] Gamification has been applied in software engineering to improve quality and results by increasing people's motivation and engagement. A systematic mapping has identified research gaps in the field, one of them ... -
An Efficient Representation of Enriched Temporal Trajectories
(SciTePress, 2021)[Abstract] We present a novel representation of enriched trajectories of a mobile workforce management system. In this system, employees are tracked during their working day and both their routes and the tasks performed ... -
An index for moving objects with constant-time access to their compressed trajectories
(Taylor & Francis, 2021)[Abstract]: As the number of vehicles and devices equipped with GPS technology has grown explosively, an urgent need has arisen for time- and space-efficient data structures to represent their trajectories. The most commonly ... -
Aprendizaje experiencial e introducción de estresores en el diseño de una práctica centrada en procesos de gestión
(Asociación de Enseñantes Universitarios de la Informática (AENUI), 2020)[Resumen]: La formación de los futuros ingenieros de software re- quiere de un equilibrio entre el desarrollo de habilidades técnicas y blandas (i.e, soft-skills) Este trabajo explora el diseño de una sesión práctica que, ... -
Augmented Thresholds for MONI
(Institute of Electrical and Electronics Engineers Inc., 2023)[Abstract]: MONI (Rossi et al., 2022) can store a pangenomic dataset T in small space and later, given a pattern P, quickly find the maximal exact matches (MEMs) of P with respect to T. In this paper we consider its one-pass ... -
Automatic group-wise whole-brain short association fiber bundle labeling based on clustering and cortical surface information
(BioMed Central Ltd., 2020-06-03)[Abstract] Background Diffusion MRI is the preferred non-invasive in vivo modality for the study of brain white matter connections. Tractography datasets contain 3D streamlines that can be analyzed to study the main ... -
Boosting Perturbation-Based Iterative Algorithms to Compute the Median String
(IEEE, 2021)[Abstract] The most competitive heuristics for calculating the median string are those that use perturbation-based iterative algorithms. Given the complexity of this problem, which under many formulations is NP-hard, the ... -
Building-Scale Wastewater-Based Epidemiology for SARS-CoV-2 Surveillance at Nursing Homes in A Coruña, Spain
(MDPI, 2023-11)[Abstract] Wastewater-based epidemiology (WBE) has become an effective tool in the surveillance of infectious diseases such as COVID-19. In this work, we performed a brief study of monitoring the SARS-CoV-2 viral load ... -
Classic distance join queries using compact data structures
(Elsevier, 2024-07)[Abstract]: Distance-based Join Queries (DJQs) have multiple applications in spatial databases, Geographic Information Systems, and other areas. The K Closest Pairs Query (KCPQ) and the 𝜀� Distance Join Query (𝜀� DJQ) ... -
Clustering-based compression for raster time series
(Oxford University Press, 2024-09-29)[Abstract]: A raster time series is a sequence of independent rasters arranged chronologically covering the same geographical area. These are commonly used to depict the temporal evolution of represented variables. The ...
