bitmap indices. ICDE’14, IEEE, 2014; 484–495.•Culpepper JS, Moffat A. Efficient set intersection for inverted indexing. ACM Transactions on Information Systems Dec 2010; 29(1):1:1–1:25, doi:10.1145/1877766.1877767.•Kaser O, Lemire D. Attribute value reordering for efficient hybri...
In lieu of a separate indexing register, the sign bit of the accumulator may be made to function as a single bit index register to effectuate address modification. In a machine so organized the instructions have a reserved bit position which gives the programmer the option of selecting modified...
RLH: Bitmap compression technique based on run-length and Huffman encoding - ScienceDirect NET-FLi: on-the-fly compression, archiving and indexing of streaming network traffic: Proceedings of the VLDB Endowment: Vol 3, No 1-2 MASC: a Bitmap Index Encoding Algorithm for Fast Data Retrieval 数...
https://www.cybertec-postgresql.com/en/postgresql-indexing-index-scan-vs-bitmap-scan-vs-sequential-scan-basics/
WICJpegIndexingOptions 枚举 WICJpegLuminanceProperties 枚举 WICJpegScanHeader 结构 WICJpegScanType 枚举 WICJpegTransferMatrix 枚举 WICJpegYCrCbSubsamplingOption 枚举 WICMapGuidToShortName 函数 WICMapSchemaToName 函数 WICMapShortNameToGuid 函数 WICNamedWhitePoint 枚举 WICPixelFormatNumericRepresentation 枚举 WIC...
bitmaps such as WAH, EWAH, and Concise. In some scenarios, roaring bitmaps can deliver excellent compression performance, and provide an indexing speed that is almost hundreds of times faster than that of traditional compressed bitmaps. The indexing speed is even faster than that of uncompressed ...
BitSliceIndexing internal roaring64 testdata testfrozendata .drone.yml .gitignore .gitmodules AUTHORS CONTRIBUTORS LICENSE LICENSE-2.0.txt README.md aggregation_test.go arraycontainer.go arraycontainer_test.go benchmark_memory_test.go benchmark_test.go ...
This software is meant to serve as a basis to experiment with Bit-Slice indexing. For our purposes, we use compressed bitmaps (using the Roaring format). References Denis Rinfret, Patrick O'Neil, and Elizabeth O'Neil. 2001. Bit-sliced index arithmetic. SIGMOD Rec. 30, 2 (May 2001), 47...
Useful for fast quadtree style indexing. (See wiki: http://en.wikipedia.org/wiki/Z-order_curve ) deinterleave2(v, n) Deinterleaves the bits of v, returns the nth part. If both x and y are 16 bit, then it is true that: deinterleave2(interleave2(x,y), 0) === x deinterleave2(...
NET-FLi: on-the-fly compression, archiving and indexing of streaming network traffic: Proceedings of the VLDB Endowment: Vol 3, No 1-2 MASC: a Bitmap Index Encoding Algorithm for Fast Data Retrieval 数据压缩与信息熵 - 阮一峰的网络日志