Download Advances in Spatial Databases: 6th International Symposium, by Christos H. Papadimitriou (auth.), Ralf Hartmut Güting, PDF

By Christos H. Papadimitriou (auth.), Ralf Hartmut Güting, Dimitris Papadias, Fred Lochovsky (eds.)

This e-book constitutes the refereed complaints of the sixth foreign Symposium on Spatial Databases, SSD'99, held in Hong Kong, China in July 1999.
The 17 revised complete papers offered have been rigorously chosen from fifty five submissions. additionally incorporated are brief papers resembling 3 invited talks and commercial purposes displays. The papers are geared up in chapters on multi-resolution and scale, indexing, relocating items and spatio-temporal info, spatial mining and type, spatial sign up for, uncertainty and geological hypermaps, and business and visionary program tune.

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Extra info for Advances in Spatial Databases: 6th International Symposium, SSD’99 Hong Kong, China, July 20—23, 1999 Proceedings

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Examples of update patterns commonly used in building LOD models for surfaces are: vertex insertion, which is performed by inserting a new vertex and retriangulating its surrounding polytope consequently; and vertex split, which is performed by expanding a vertex into an edge and warping its surrounding cells consequently. Such update patterns are well defined in any dimension d, and they are depicted in Figure 6 for the two-dimensional case. VERTEX INSERTION VERTEX SPLIT Fig. 6. Two types of update patterns that allow the design of compressed data structures for an MC.

The key operations used by extraction algorithms consist in either advancing the front after a node, when the resolution of the complex over that area is not sufficient, or moving it before a node when the resolution over that area is higher than required. The key issues that have impact on the performance of such algorithms are: the evaluation of the resolution function, which is application-dependent; and the evaluation of mutual relations that occur among different entities of the SMC. The cost of computing such relations is highly dependent on the amount of information stored in the data structure.

Towards a formal model for multiresolution spatial maps. In Advances in Spatial Databases SSD’95, volume 951 of Lecture Notes in Computer Science, pages 152–169. Springer-Verlag, 1995. [RS95] P. Rigaux and P. Scholl. Multi-scale partitions: Applications to spatial and statistical databases. In Advances in Spatial Databases SSD’95, volume 951 of Lecture Notes in Computer Science, pages 170–183. Springer-Verlag, 1995. [Ste99] J. G. Stell. Granularity for graphs. In Proceedings of Conference on Spatial Information Theory, COSIT’99, Lecture Notes in Computer Science.

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