43 search results - page 3 / 9 » Vague Spatial Data Types, Set Operations, and Predicates |
ICDE
2008
IEEE
14 years 6 months ago
2008
IEEE
We introduce a novel query type defined over streaming moving object data, namely, the Continuous Motion Pattern (CMP) Queries. A motion pattern is defined as a sequence of distin...
CJ
2006
13 years 5 months ago
2006
Operations on spatial objects have much individuality. As a consequence, the spatial data modelling approaches, which have been proposed, have to consider either data types of the...
SIGMOD
1994
ACM
13 years 9 months ago
1994
ACM
Spatial joins are one of the most important operations for combining spatial objects of several relations. In this paper, spatial join processing is studied in detail for extended...
CORR
2011
Springer
13 years 10 days ago
2011
Springer
We investigate (quantifier-free) spatial constraint languages with equality, contact and connectedness predicates, as well as Boolean operations on regions, interpreted over low-...
KDD
1997
ACM
13 years 9 months ago
1997
ACM
1 Several clustering algorithms have been proposed for class identification in spatial databases such as earth observation databases. The effectivity of the well-known algorithms ...