3 search results - page 1 / 1 » Position list word aligned hybrid: optimizing space and perf... |
EDBT
2010
ACM
13 years 10 months ago
2010
ACM
Compressed bitmap indexes are increasingly used for efficiently querying very large and complex databases. The Word Aligned Hybrid (WAH) bitmap compression scheme is commonly rec...
CORR
2010
Springer
13 years 4 months ago
2010
Springer
Bit arrays, or bitmaps, are used to significantly speed up set operations in several areas, such as data warehousing, information retrieval, and data mining, to cite a few. Howeve...
VLDB
2004
ACM
13 years 9 months ago
2004
ACM
It is well established that bitmap indices are efficient for read-only attributes with low attribute cardinalities. For an attribute with a high cardinality, the size of the bitma...