Compression, SIMD, and Postings Lists
Compression, SIMD, and Postings Lists
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压缩、SIMD 和帖子列表
DOI:
10.1145/2682862.2682870
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
A. Trotman
中科院分区:
文献类型:
--
作者:
A. Trotman
The three generations of postings list compression strategies (Variable Byte Encoding, Word Aligned Codes, and SIMD Codecs) are examined in order to test whether or not each truly represented a generational change -- they do. Some weaknesses of the current SIMD-based schemes are identified and a new scheme, QMX, is introduced to address both space and decoding inefficiencies. Improvements are examined on multiple architectures and it is shown that different SSE implementations (Intel and AMD) perform differently.