Robin Haswell wrote:
Hi guys

My company is looking in to using Nutch as a search engine framework to
build upon. Everything seems to be in place except for one obstacle -
there seems to be very little information on
modifying/extending/replacing the ranking algorithm.

>From searching around the web, I think Nutch only allows you to apply
filters to Lucene's results - is this the case? How easy would it be to
replace the ranking algorithm from the index upwards? Is, for example,
pagerank/hits-like analysis or bayesian spam filtering possible? Would
the current implementation be working against us while adding these
features?

We would be willing to release our general work on making this stuff
easier back to the community, if possible. Of course we would also
comply with any parts of the Apache license that apply.

Please take a look at the SVN (development) version, there's a scoring API there that allows you to apply arbitrary scoring/ranking methods.

--
Best regards,
Andrzej Bialecki     <><
___. ___ ___ ___ _ _   __________________________________
[__ || __|__/|__||\/|  Information Retrieval, Semantic Web
___|||__||  \|  ||  |  Embedded Unix, System Integration
http://www.sigram.com  Contact: info at sigram dot com




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