[greenstone-devel] re Sort order of search result list and browse list

From Ying-Hsang Liu
DateThu, 8 Jun 2006 22:20:51 -0400
Subject [greenstone-devel] re Sort order of search result list and browse list
Hello,

I am using Greenstone for an information retrieval experiment. After
consulting
Greenstone documentation and the following message, it is still not
clear to me
how the ranking works in Greenstone (I am using version 2.70),
specifically
MGPP search engine.

My collection is built upon MGPP. If I search the system using
advanced form
search and choose the option "Search and display results in ranked
order," how
does the system work?

Is it a Boolean-based search with ranked output? Or, is it a ranked
query, like
the "Some" option search in simple form search? If either one
involves the ranking
of search results, could I get more detailed descriptions in
technical reports or
published papers?

Thanks,


Ying-Hsang Liu

--
PhD Student
Rutgers - The State University
School of Communication,
Information and Library Studies
4 Huntington St.
New Brunswick, NJ 08901
USA

Michael Dewsnip mdewsnip at cs.waikato.ac.nz
Fri Sep 26 11:39:51 NZST 2003

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Hi Stephen,

Thanks very much for your answer.

In regards to the ordering of the search results, it depends on
whether a
boolean or ranked query is being performed. For a ranked query the
search
results are ordered according to how closely they match the query (as
you
would expect). For a boolean query, a document either matches or
doesn't, so
there is no scope for ordering. Therefore, the documents are simply
listed
based on the order they were indexed by MG/MGPP, as you guessed.

Regards,

Michael