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http://hdl.handle.net/1942/2819
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | HAESEVOETS, Sofie | - |
dc.date.accessioned | 2007-11-16T12:44:46Z | - |
dc.date.available | 2007-11-16T12:44:46Z | - |
dc.date.issued | 2004 | - |
dc.identifier.citation | CONSTRAINT DATABASES, PROCEEDINGS. p. 52-73 | - |
dc.identifier.isbn | 978-3-540-22126-5 | - |
dc.identifier.issn | 0302-9743 | - |
dc.identifier.uri | http://hdl.handle.net/1942/2819 | - |
dc.description.abstract | In spatial databases, incompatibilities often arise due to different choices of origin or unit of measurement (e.g., centimeters versus inches). By representing and querying the data in an affine-invariant manner, we can avoid these incompatibilities. In practice, spatial (resp., spatio-temporal) data is often represented as a finite union of triangles (resp., moving triangles). As two arbitrary triangles are equal up to a unique affinity of the plane, they seem perfect candidates as basic units for an affine-invariant query language. We propose a so-called "triangle logic", a query language that is affine-generic and has triangles as basic elements. We show that this language has the same expressive power as the affine-generic fragment of first-order logic over the reals on triangle databases. We illustrate that the proposed language is simple and intuitive. It can also serve as a first step towards a "moving-triangle logic" for spatio-temporal data. | - |
dc.language.iso | en | - |
dc.publisher | SPRINGER-VERLAG BERLIN | - |
dc.relation.ispartofseries | LECTURE NOTES IN COMPUTER SCIENCE | - |
dc.title | A triangle-based logic for affine-invariant querying of two-dimensional spatial data | - |
dc.type | Journal Contribution | - |
local.bibliographicCitation.conferencename | CONSTRAINT DATABASES | - |
local.bibliographicCitation.conferenceplace | Paris, France. JUN 12-13 2004 | - |
dc.identifier.epage | 73 | - |
dc.identifier.spage | 52 | - |
local.format.pages | 22 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | Limburgs Univ Ctr, Dept WNI, B-3590 Diepenbeek, Belgium.Haesevoets, S, Limburgs Univ Ctr, Dept WNI, Univ Campus, B-3590 Diepenbeek, Belgium.sofie.haesevoets@luc.ac.be | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
local.relation.ispartofseriesnr | 3074 | - |
dc.bibliographicCitation.oldjcat | A1 | - |
dc.identifier.doi | 10.1007/b98003 | - |
dc.identifier.isi | 000222323700004 | - |
item.contributor | HAESEVOETS, Sofie | - |
item.validation | ecoom 2005 | - |
item.fullcitation | HAESEVOETS, Sofie (2004) A triangle-based logic for affine-invariant querying of two-dimensional spatial data. In: CONSTRAINT DATABASES, PROCEEDINGS. p. 52-73. | - |
item.accessRights | Closed Access | - |
item.fulltext | No Fulltext | - |
crisitem.journal.issn | 0302-9743 | - |
Appears in Collections: | Research publications |
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