338 search results - page 7 / 68 » Approximation Spaces and Information Granulation |
SPIRE
2009
Springer
14 years 1 months ago
2009
Springer
We introduce two new index structures based on the q-gram index. The new structures index substrings of variable length instead of q-grams of fixed length. For both of the new ind...
GIS
2008
ACM
14 years 8 months ago
2008
ACM
Existing techniques for autonomous indoor navigation are often environment-specific and thus limited in terms of their applicability. In this paper, we take a fundamentally differ...
ICDE
2004
IEEE
14 years 8 months ago
2004
IEEE
Temporal aggregate queries retrieve summarized information about records with time-evolving attributes. Existing approaches have at least one of the following shortcomings: (i) th...
CIKM
1997
Springer
13 years 11 months ago
1997
Springer
Although the issue of approximate text retrieval is gaining importance in the last years, it is currently addressed by only a few indexing schemes. To reduce space requirements, t...
CIKM
2003
Springer
14 years 19 days ago
2003
Springer
High dimensional data sets are encountered in many modern database applications. The usual approach is to construct a summary of the data set through a lossy compression technique...