168 search results - page 16 / 34 » Incremental Distance Join Algorithms for Spatial Databases |
SIGMOD
2009
ACM
14 years 8 months ago
2009
ACM
In this paper, we study a novel form of continuous nearest neighbor queries in the presence of obstacles, namely continuous obstructed nearest neighbor (CONN) search. It considers...
SIGMOD
2002
ACM
14 years 8 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...
VLDB
1998
ACM
14 years 3 days ago
1998
ACM
Data warehouses provide a great deal of opportunities for performing data mining tasks such as classification and clustering. Typically, updates are collected and applied to the d...
ICDE
2005
IEEE
14 years 9 months ago
2005
IEEE
Moving objects databases managing spatial objects with continuously changing position and extent over time have recently found large interest in the database community. Queries ab...
SIGMOD
2000
ACM
13 years 11 months ago
2000
ACM
In this paper, we propose a novel formulation for distance-based outliers that is based on the distance of a point from its kth nearest neighbor. We rank each point on the basis o...