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From Otis Gospodnetic <otis_gospodne...@yahoo.com>
Subject Re: Another engine
Date Tue, 10 Sep 2002 13:53:06 GMT
Hello,

I like Larbin, too, but that's a web crawler (apples, oranges, bananas)
The demo doesn't seem to work.
I'd be curious to see it when it becomes available.

Otis

--- Leo Galambos <Leo.G@seznam.cz> wrote:
> Hi.
> 
> I like Lucene (THAT'S RIGHT!), but it doesn't offer me all features I
> 
> want. That's why I decided to write another JAVA engine. If the
> features 
> (see below) are interested for you, and you are a developer, that
> would 
> like to help me with the new engine, PLEASE let me know (use my
> private 
> mail, I DO NOT WANT TO START A FLAMEWAR HERE, LARBIN IS COOL. Howgh).
> 
> Thank you.
> 
> I would like to contribute to Lucene project, but I have chosen 
> different object model for the new engine... :-(
> 
> Demo runs here: http://somis4.ais.dundee.ac.uk/sheeef/index.jsp (the 
> machine indexes *.ac.uk right now, so the speed may be slower if you
> try 
> many concurrent queries).
> 
> Features:
> - extended Boolean model with p-metrics
> - index compression via Golomb, Elias-Gamma, and block coding. Better
> 
> than Lucene for more than 20-50%. Each inverted list is stored in the
> 
> best coding method. The method is selected by "inverted list
> metadata" 
> object - it is not hard-coded.
> - highly configurable dynamization algorithm - it guarantees a good 
> response time for query(), insert(), delete() operations (without 
> degradation of index structure)
> - universal stemming technique for almost any language (not used in
> demo)
> - on distributed architecture, insert() would not lock the index
> - the engine would be able to simulate Harvest structure of Brokers
> - ...
> 
> Speed (indexing 2000 HTML documents, without stemming)
> Larbin-latest: 1'17"
> the engine: 1'22"
> [RH73,IBMJDK131+JIT]
> 
> Regards,
> 
> Leo



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