199 search results - page 2 / 40 » A Performance Comparison of bitmap indexes |
ISMIS
2005
Springer
13 years 10 months ago
2005
Springer
In this paper we propose an original approach to apply data mining algorithms, namely decision tree-based methods, taking into account not only the size of processed databases but ...
SSDBM
2002
IEEE
13 years 10 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...
ADBIS
2003
Springer
13 years 8 months ago
2003
Springer
Abstract. Set-valued attributes are convenient to model complex objects occurring in the real world. Currently available database systems support the storage of set-valued attribut...
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
2007
IEEE
13 years 11 months ago
2007
IEEE
Bitmap indices have been widely used in several domains such as data warehousing and scientific applications due to their efficiency in answering certain query types over large ...