Xapian devel - Jan 2015 - Relevance feedback

Hello All!

I am Sajid from India. I found out about Xapian from GSoC page. I was going
through the website and studying the current implementations. I was
wondering if Xapian has an implementation for Relevance Feedback? I studied
about it in my Information Retrieval course and would like to work on it.
Please point me towards the current implementation, if any or please let me
know if such an implementation would benefit the goals of Xapian.

Thanking in advance for the help!

-- 
*Sajidur Rahman*,

BITS-Pilani  *|||**|* K.K.Birla Goa Campus
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On Fri, Jan 23, 2015 at 11:05:38AM +0530, Sajidur Rahman
wrote:
> I am Sajid from India. I found out about Xapian from GSoC page. I was going
> through the website and studying the current implementations. I was
> wondering if Xapian has an implementation for Relevance Feedback?
A quick search on the website would answer that:

http://xapian.org/search?P=relevance+feedback

And also show it in action (the list of terms in the green box are from
relevance feedback).
> I studied about it in my Information Retrieval course and would like
> to work on it.  Please point me towards the current implementation, if
> any or please let me know if such an implementation would benefit the
> goals of Xapian.
Xapian offers a choice of two algorithms currently - either based on the
probabilistic weighting scheme, or on Divergence from Randomness (the
latter is only on trunk).

If there are other algorithms which would be useful to add, that could
be part of a GSoC project.  I don't think it would be enough work to
fill three months though (the DfR query expansion was a small part of
a larger GSoC project working on implementing DfR weighting schemes).

Cheers,
    Olly