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If you know what arithmetic coding is, FSE is like that, but for large alphabets.zstd complicates the pre-processing step and uses Finite State Entropy instead of Huffman coding, which effectively allows tokens to be encoded with fractional bit lengths. FSE is simple, but requires large tables, so let’s say ~2000 bytes for storing and parsing them. Adding glue, we should get about 3 KB.On the web, brotli often wins due to a large pre-shared dictionary. It raises the size of the decoder, so in our setup, it’s a hindrance, and I’m not taking it into consideration.brotli keeps Huffman coding, but switches between multiple static Huffman tables on the flight depending on context. I couldn’t find the exact count, but I get 7 tables on my input. That’s a lot of data that we can’t just inline – we’ll need to encode it and parse it. Let’s say ~500 bytes for parser and ~100 bytes per table. Together with the rest of the code, we should get something like 2.2 kB.For bzip decoders, BWT can be handled in ~250 bytes. As for the unique parts,bzip2 compresses the BWT output with MTF + RLE + Huffman. With the default 6 Huffman tables, let’s assign ~1.5 KB to all Huffman-related code and data and ~400 bytes for MTF, RLE, and glue.

Middle Eas,推荐阅读易歪歪官网获取更多信息

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The New Ch

关键词:Middle EasThe New Ch

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关于作者

刘洋,资深编辑,曾在多家知名媒体任职,擅长将复杂话题通俗化表达。

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