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- Newsgroups: comp.compression.research
- Path: sparky!uunet!uunet.ca!canrem!dosgate!dosgate![jonathan.forbes@canrem.com]
- From: "jonathan forbes" <jonathan.forbes@canrem.com>
- Subject: improvements to lha
- Message-ID: <1993Jan12.2816.1018@dosgate>
- Reply-To: "jonathan forbes" <jonathan.forbes@canrem.com>
- Organization: Canada Remote Systems
- Distribution: comp
- Date: 12 Jan 93 21:55:28 EST
- Lines: 21
-
- -> By the way, the basic algorithm of LHA is in my public-domain pre-LHA
- -> experimental archiver ar002 (which I wrote when I was a high-school
- -> teacher). It's in CompuServe's IBMPRO Library and also on the disk
-
- I was wondering if you have considered any improvements to LHA's
- compression, or any increase to its speed.
-
- What do you think programs such as ARJ are doing to get compression
- improvements over LHA? Simply increasing the buffer size from 8K to 24K
- can't be all it is. Perhaps there is a better way of encoding the
- huffman tree and outputting it - there may also be a faster way of
- generating the huffman tree.
-
- Also, do you know of a faster way to locate matches (than the digital
- hash trie used in AR002)? It doesn't matter if it takes more memory;
- I'm just looking for speed improvements in the match finding process.
-
- AR002 is a great program!
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