31 search results - page 1 / 7 » Efficient processing of past-future spatiotemporal queries |
SAC
2006
ACM
14 years 4 months ago
2006
ACM
140
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The wide spread use of cellular phones, handheld devices, and GPS-like technology enables location-aware environments where virtually all objects are aware of their locations. Loca...
GIS
1999
ACM
14 years 3 months ago
1999
ACM
: The paper is concerned with the effective and efficient processing of spatiotemporal selection queries under varying degrees of approximation. Such queries may employ operators l...
SIGMOD
2004
ACM
14 years 11 months ago
2004
ACM
This paper introduces the Scalable INcremental hash-based Algorithm (SINA, for short); a new algorithm for evaluating a set of concurrent continuous spatio-temporal queries. SINA ...
SIGMOD
2002
ACM
14 years 11 months ago
2002
ACM
Time-parameterized queries (TP queries for short) retrieve (i) the actual result at the time that the query is issued, (ii) the validity period of the result given the current mot...