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Bitmap indexing is a promising approach for indexing. However the huge space consumption hinders the wide adoption of bitmap indexing, especially in memory-critical area such as packet classification. To this end, a variety of compression scheme are proposed to reduce the space consumption and simultaneously maintain the fast calculation which is a focused feature of bitmap indexing. In this paper,...
Archiving of the Internet traffic is essential for analyzing network events in the field of network security and network forensics. The bitmap index is widely used to achieve fast searching in archival traffic data requiring a large storage space. As current state-of-art, WAH, PLWAH and COMPAX are proposed for compressing bitmap indexes. In this paper, a new bitmap index compression scheme, named...
Efficient retrieval of traffic archival data is a must-have technique to detect network attacks, such as APT(advanced persistent threat) attack. In order to take insight from Internet traffic, the bitmap index is increasingly used for efficiently querying over large datasets. However, a raw bitmap index leads to high space consumption and overhead on loading indexes. Various bitmap index compression...
Traffic archival, an indispensable task for network analysis, has suffered from a huge amount of data. These rapid growing data can exceed storage capacity and thwart real-time analysis. In order to take insight from Internet traffic, bitmap indexing is applied in this field. However, raw bitmap indexes can consume more space and longer delay for loading larger indexes into memory. This leads to the...
Bitmap index is widely used in archiving and searching of Internet traffic, which is an essential step for analyzing network events in the field of network forensics. However, bitmap index requires a large storage space for fast searching in archival data. As current state-of-the-art bitmap index compression techniques, various encoding algorithms have been proposed, e.g. WAH, PLWAH, COMPAX, etc....
Archiving of Internet traffic is essential for analyzing network events in the field of network security. Currently, bitmap indexing is used to accelerate the indexing and search queries for archival traffic data. However, the generation of bitmap index needs large storage space, which makes bitmap index compression is a must-have function. In this paper, we propose a new bitmap index encoding algorithm...
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