Get Advances in Conceptual Modeling - Applications and PDF

By Juan Trujillo, Gillian Dobbie, Hannu Kangassalo, Sven Hartmann, Markus Kirchberg, Matti Rossi, Iris Reinhartz-Berger, Esteban Zimányi, Flavius Frasincar

ISBN-10: 364216384X

ISBN-13: 9783642163845

This booklet constitutes the refereed court cases of workshops, held on the twenty ninth foreign convention on Conceptual Modeling, ER 2010, in Vancouver, Canada, in November 2010. The 31 revised complete papers offered have been conscientiously reviewed and chosen from eighty two submissions. The papers are prepared in sections at the workshops Semantic and Conceptual matters in GIS (SeCoGIS); Conceptual Modeling of lifestyles Sciences functions (CMLSA); Conceptual Modelling of companies (CMS); lively Conceptual Modeling of studying (ACM-L); net info platforms Modeling (WISM); area Engineering (DE@ER); and Foundations and Practices of UML (FP-UML).

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Additional info for Advances in Conceptual Modeling - Applications and Challenges: ER 2010 Workshops ACM-L, CMLSA, CMS, DE@ER, FP-UML, SeCoGIS, WISM, Vancouver, BC, ... Applications, incl. Internet Web, and HCI)

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LNCS, vol. 3534, pp. 143– 167. Springer, Heidelberg (2005) 20. : Semantic Interoperability Based on Dublin Core Hierarchical One-to-One Mappings. Int. J. Metadata, Semantics and Ontologies 1(3), 183–188 (2006) 21. : A Geo-Service Semantic Integration in Spatial Data Infrastructures. Int. Journal of Spatial Data Infrastructures Research 4, 24–51 (2009) 22. : A Task-based Ontology Approach to Automate Geospatial Data Retrieval. Transactions in GIS 11(3), 355–376 (2007) 23. : Ontology-Driven Discovering Model for Geographical Information Services.

1 Translation to the Rank Space In each dimension there are N intervals, each described by two float numbers (its endpoints). A common technique to perform the translation of these intervals to the rank space stores two ordered arrays, one with the left endpoints and the other one with the right endpoints. Then, the endpoints of an interval in the rank space correspond with the positions of its real endpoints in these arrays. Although the real coordinates of the MBRs are floating point numbers, in GIS these numbers can be represented with four bytes each.

In this paper we present a compact structure to index semistatic collections of MBRs that solves range queries while keeping a good trade-off between the space needed to store the index and its search efficiency. This is very relevant considering the current sizes and gaps in the memory hierarchy. Our index is based on the wavelet tree, a structure used to represent sequences, permutations, and other discrete functions in stringology. The comparison with the R*-tree and the STR R-tree (the most relevant dynamic and static versions of the R-tree) shows that our proposal needs less space to store the index while keeping competitive search performance, especially when the queries are not too selective.

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Advances in Conceptual Modeling - Applications and Challenges: ER 2010 Workshops ACM-L, CMLSA, CMS, DE@ER, FP-UML, SeCoGIS, WISM, Vancouver, BC, ... Applications, incl. Internet Web, and HCI) by Juan Trujillo, Gillian Dobbie, Hannu Kangassalo, Sven Hartmann, Markus Kirchberg, Matti Rossi, Iris Reinhartz-Berger, Esteban Zimányi, Flavius Frasincar


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