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TitleAggregating spatio-temporal phenomena at multiple levels of detail
Author(s)Silva, Ricardo
Pires, João Moura
Santos, Maribel Yasmina
Leal, Rui
Spatio-temporal data
Multiple levels of detail
Issue dateJun-2015
PublisherSpringer Verlag
JournalLecture Notes in Geoinformation and Cartography
CitationSilva, Ricardo, João Moura Pires, Maribel Yasmina Santos and Rui Leal, “Aggregating Spatio-temporal Phenomena at Multiple Levels of Detail”, F. Bação et al. (eds.), Geographic Information Science as an Enabler of Smarter Cities and Communities, Proceedings of the 18th AGILE International Conference in Geographic Information Science, Lectures Notes in Geoinformation and Cartography, Springer-Verlag, 2015, June 09-12, Lisboa, Portugal, pp. 291-308, ISBN: 978-3-319-16786-2.
Abstract(s)Spatio-temporal data are collected at high levels of detail (LoDs). Both spatial and temporal characteristics of data can be expressed at different LoDs. Depending on the phenomenon and the analytical goal, different LoDs can be suitable for a user’s analysis since different LoDs may provide different percep- tions of a phenomenon. It is crucial to model spatio-temporal phenomena having in mind that different LoDs can be useful in their analyses. We propose a granu- larities-based model in order to model spatio-temporal phenomena at multiple LoDs. It defines the concept of LoD and afterwards the atom generalization, gran- ular synthesis and compressed granular syntheses set concepts to express a phe- nomenon at some LoD into a coarser one. This occurs in a semi-automatic way as the user just needs to define functions that create the compressed granular synthe- ses sets. A demonstration case was conducted applied to a real dataset about acci- dents in USA in which the model proposed proved to be useful to reduce the amount and complexity of data when the phenomenon is observed at coarser LoDs than the ones at which data is provided.
TypeConference paper
AccessRestricted access (UMinho)
Appears in Collections:CAlg - Artigos em livros de atas/Papers in proceedings

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