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Efficient continuous top-k spatial keyword queries on road networks / Long Guo in Geoinformatica, vol 19 n° 1 (January - March 2015)  

Public [article]  inGeoinformatica > vol 19 n° 1 (January - March 2015) . - pp 29 - 60 Titre : Efficient continuous top-k spatial keyword queries on road networks Type de document : Article/Communication Auteurs : Long Guo, Auteur ; Jie Shao, Auteur ; Htoo Htet Aung, Auteur ; Kian-Lee Tan, Auteur Année de publication : 2015 Article en page(s) : pp 29 - 60 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] espace euclidien [Termes IGN] extraction de données [Termes IGN] géobalise [Termes IGN] géopositionnement [Termes IGN] requête spatiale [Termes IGN] réseau routier [Termes IGN] système d'information géographique [Termes IGN] traitement de données localisées Résumé : (auteur) With the development of GPS-enabled mobile devices, more and more pieces of information on the web are geotagged. Spatial keyword queries, which consider both spatial locations and textual descriptions to find objects of interest, adapt well to this trend. Therefore, a considerable number of studies have focused on the interesting problem of efficiently processing spatial keyword queries. However, most of them assume Euclidean space or examine a single snapshot query only. This paper investigates a novel problem, namely, continuous top-k spatial keyword queries on road networks, for the first time. We propose two methods that can monitor such moving queries in an incremental manner and reduce repetitive traversing of network edges for better performance. Experimental evaluation using large real datasets demonstrates that the proposed methods both outperform baseline methods significantly. Discussion about the parameters affecting the efficiency of the two methods is also presented to reveal their relative advantages. Numéro de notice : A2015-485 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-014-0204-8 En ligne : https://doi.org/10.1007/s10707-014-0204-8 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=77248 [article]