artifacts/dict_auto_xz_AutoZip/README.md

dict-auto-xz (AutoZip)

Approach:

• Detect bytes not present in enwik8.
• Substitute high-gain XML/wiki/text patterns with those single-byte codes.
• Compress the transformed stream with tuned xz/lzma2.
• Decompress by xz decode + inverse substitution table (subs.json).

Backend xz options:

• -9e --lzma2=dict=512MiB,nice=273,mf=bt4,mode=normal,lc=4,lp=0,pb=0

Roundtrip:

• Verified byte-identical output against shared_resources/enwik8.

Score:

• See results.json (archive + decompressor.zip).