Inverted Index Compression Using Word-Aligned Binary Codes |
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| Authors: | Vo Ngoc Anh Alistair Moffat |
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| Institution: | (1) Department of Computer Science and Software Engineering, The University of Melbourne, Victoria, 3010, Australia |
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| Abstract: | We examine index representation techniques for document-based inverted files, and present a mechanism for compressing them using word-aligned binary codes. The new approach allows extremely fast decoding of inverted lists during query processing, while providing compression rates better than other high-throughput representations. Results are given for several large text collections in support of these claims, both for compression effectiveness and query efficiency. |
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| Keywords: | index compression integer coding index representation |
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