Zettair News
6th June, 2006
Zettair 0.9 is now available.
There has been a huge amount of change from 0.6.1, including:
- stemming
- transparent indexing of gzipped files (though summarisation will be slow for these files)
- an overhauled metric system, including a language for composing new metrics
- the addition of the Dirichlet-smoothed language modelling metric, now as default
- optional impact-ordered operation
- greatly decreased memory consumption
- increased querying and indexing speed
- integrated effectiveness evaluation
10th August, 2004
Zettair 0.6.1 is now available.
The only change from 0.6.0 is a workaround for the OS X bug in the 0.6.0
index construction. Please note that as of 0.6.0,
(we forgot to mention this in the 0.6.0 announcement) Zettair should build and
run on windows, both under native win32 (using visual studio) or under cygwin.
Please try it out and report any bugs.
28th July, 2004
Zettair 0.6.0 is available for download.
This version incorporates numerous changes over 0.5.4:
- B+-tree vocabulary for better memory usage and scalability
- New build system to support b+-tree construction (via a bulk-construction algorithm)
- Numerous bugfixes
Unfortunately we are aware that Zettair 0.6.0 has a problem building large
indexes on Mac OS X. This will cause a crash during the last stage of index
construction. We are currently investigating and will release Zettair 0.6.1
to correct this problem.
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created by Hugh Williams, 10 August 2004. Last modified 10 August 2004