Partitioned elias-fano indexes
WebJun 10, 2024 · We show that our partitioned Elias-Fano indexes offer significantly better compression than plain Elias-Fano, while preserving their query time efficiency. Furthermore, compared with other state ... WebWe show that our partitioned Elias-Fano indexes offer significantly better compression than plain Elias-Fano, while preserving their query time efficiency. Furthermore, …
Partitioned elias-fano indexes
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WebAug 22, 2016 · Elias-Fano encoding is quasi succinct, which means it is almost as good as the best theoretical possible compression scheme for sorted integers. While it can be used to compress any sorted list of integers, we will use it for compressing posting lists of inverted indexes. While gap compression has been around for over 30 years, and some of the ... WebPartitioned Elias-Fano Indexes. 2014. In Proceedings of the 37th International Conference on Research and Development in Information Retrieval. 273–282. [3] Giulio Ermanno Pibiri. Fast and Compact Set Intersection through Recursive Universe Partitioning. 2024. IEEE Data Compression Conference (DCC). [4] Giulio Ermanno Pibiri.
WebApr 7, 2024 · The above version of Elias-Fano coding cannot exploit clustered data distributions for better compression. This is achieved by a modification called Partitioned Elias-Fano that splits the sequence into b blocks, and then uses an optimal choice of the number of bits in the high and low parts for each block. We use this version, which … WebDec 2, 2024 · Our experimental results suggest that our approaches are competitive in practice, outperforming the most efficient alternatives (Partitioned Elias-Fano indexes, …
http://groups.di.unipi.it/~ottavian/files/elias_fano_sigir14.pdf WebThe Partitioned Elias-Fano algorithm splits the successor list into sublists to get a better compression. Consider the Elias-Fano approach, where the space needed is 2 + log …
WebJun 11, 2024 · To guide index construction and run-time query optimization, we introduce a novel DL-base query cardinality estimator named SimCardNet. To further reduce the index space cost, we propose a learned index compression scheme by combining the piece-wise linear approximation (PLA) and Elias-Fano encoding.
WebMay 9, 2024 · By using the two-level partitioned compression, PEF indexes offer up to double [8] the compression of plain Elias-Fano while preserving its query time efficiency. … how to interpret the slope of a trend lineWebDec 11, 2024 · This paper describes a new representation of monotone sequences based on partitioning the list into chunks and encoding both the chunks and their endpoints with Elias-Fano, hence forming a two-level data structure that offers significantly better compression and improves compression ratio/query time trade-off. 109 PDF jordan fabrics tutorial binding by machineWebJul 3, 2014 · The Elias-Fano representation of monotone sequences has been recently applied to the compression of inverted indexes, showing excellent query performance … how to interpret the standard deviationWeb28 rows · 2014. Giuseppe Ottaviano. Rossano Venturini. Partitioned Elias-Fano indexes. For a paper that significantly improves on an already excellent compression technique, … how to interpret the regression resultsWebConference IR. IR: Research and Development in Information Retrieval. Search within IR. Search Search Search jordan fabrics tutorials mirror mirrorWebJul 1, 2000 · We compare the performance of partitioned VByte indexes against several state-of-the-art encoders, such as: partitioned Elias-Fano (PEF) [32], Binary … how to interpret the t-valueWebPartitioned Elias- Fano Indexes. Inverted indexes. Document. Docid. Posting list. Core data structure of Information Retrieval We seek fast and space-efficient encoding of … how to interpret the slope of regression line