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Cyan4973/Yann also is well known for xxhash[1], which is one of the faster hashers[2] out there. Post a new hasher and people will probably ask about xxhash (ex: metrohash[3]). Guy is an absolute machine. If you search Google for 'zstd' right now, you'll find him, not Facebook, namely: https://github.com/Cyan4973/zstd . Glad his work is being supported by someone now! Immensely well deserved, after so many years of helping make everyone fast.

PS - I didn't know a lot of the terms you used, but the Finite State Entropy (FSE) link you provided does a good job intro'ing some of them, and the linked paper Asymmetric numeral systems: entropy coding combining speed of Huffman coding with compression rate of arithmetic coding [4] (ANS) seems interesting.

[1] https://github.com/Cyan4973/xxHash

[2] https://github.com/rurban/smhasher

[3] https://news.ycombinator.com/item?id=9613098

[4] http://arxiv.org/abs/1311.2540




I found his (Yann's) blog posts the most helpful for getting a basic idea of what was going on with FSE: https://fastcompression.blogspot.com/2013/12/finite-state-en... and the followup https://fastcompression.blogspot.fr/2014/01/fse-decoding-how...


Yes. I forgot about xxHash :). I think it was created as part of checksumming on LZ4 (not entirely sure). That is another amazing part of his work. He is producing this things xxHash, FSE, Huff0 that are state of the art projects in their own right for his state of the art compression algorithm making sure others can benefit the most from his work without reinventing it. At the same time he is also blogging his though process and experiment in a manner that even a layman like me gets the gist of for most part. Now whether its useful enough for an expert in the field I can't say.

There is a lot of other gem in his blog. He points to resources and other people he have worked with making it much easier to get a bigger picture on the related items.




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