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Overview
Runs of the same value can be run-length encoded.
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Run-length encoding
Run-length encoding (RLE) is a form of lossless data compression in which runs of data (sequences in which the same data value occurs in many consecutive data elements) are stored as a single data value and count, rather than as the original run.
These runs are replaced with triples: value, start postion, runLength.
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Bit-Vector Encoding
Bit-Vector encoding is most useful when columns have a limited number of possible data values.
理解run-length encoded&Bit-Vecotr Encoding
最新推荐文章于 2024-11-14 08:00:00 发布
本文介绍了数据压缩中的两种技术——Run-length Encoding（游程编码）和Bit-Vector Encoding。Run-length Encoding通过替换连续相同的数值为单一数值和计数来压缩数据，而Bit-Vector Encoding则在列具有有限可能数据值的情况下尤为适用。这两种方法都是无损数据压缩的实例，能够有效地减少数据存储和传输的开销。
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