50 search results - page 1 / 10 » Compressing Bitmap Indexes for Faster Search Operations |
SSDBM
2002
IEEE
13 years 9 months ago
2002
IEEE
In this paper, we study the effects of compression on bitmap indexes. The main operations on the bitmaps during query processing are bitwise logical operations such as AND, OR, N...
EDBT
2009
ACM
13 years 9 months ago
2009
ACM
Traditional bitmap indexes are utilized as a special type of primary or clustered indexes where the queries are answered by performing fast logical operations supported by hardwar...
WWW
2008
ACM
14 years 5 months ago
2008
ACM
To solve this problem, we devised the HS-bitmap index, which is hierarchically comprised of compressed data of summary bits. A summary bit in an upper matrix is obtained by logical...
SSDBM
2003
IEEE
13 years 10 months ago
2003
IEEE
Many scientific applications generate large spatiotemporal datasets. A common way of exploring these datasets is to identify and track regions of interest. Usually these regions ...
KDD
1998
ACM
13 years 9 months ago
1998
ACM
Discovery of association rules from large databases of item sets is an important data mining problem. Association rules are usually stored in relational databases for future use i...