Re: [VuFind-Tech] Secondary sorting

[Demian K. <dem...@vi...>]

Strange - it appears that secondary sort is not defaulting to relevance by default (I'm seeing the same thing in my own system).  That seems to contradict this FAQ:

http://wiki.apache.org/solr/SolrRelevancyFAQ#Why_are_search_results_returned_in_the_order_they_are.3F

However, I think I've found a workaround - just make the secondary sort "score desc".

- Demian

From: Stewart Brownrigg [mailto:S.J...@ke...]
Sent: Thursday, June 16, 2011 11:31 AM
To: vuf...@li...
Subject: Re: [VuFind-Tech] Secondary sorting

I am getting odd results if that is the case.

The example that I was given to investigate: 'linguistics' sorted by year:

https://catalogue.pilot.kent.ac.uk/Search/Results?join=&bool0[]=&lookfor0[]=linguistics&type0[]=AllFields&sort=year<https://catalogue.pilot.kent.ac.uk/Search/Results?join=&bool0%5b%5d=&lookfor0%5b%5d=linguistics&type0%5b%5d=AllFields&sort=year>

The first entry on the list only matches 'linguistic' a spelling variation that appears in field 520.  This is listed above other exact matches that appear in higher-weighted title, topic.

Could this be a fault with our local implementation?

Stewart
--
Stewart J Brownrigg
S05A Cornwallis Octagon, University of Kent, Canterbury, Kent, CT2 7NF, UK
+44(0)1227 823621; S.J...@ke...<mailto:S.J...@ke...>

From: Demian Katz [mailto:dem...@vi...]
Sent: 16 June 2011 15:11
To: Stewart Brownrigg; vuf...@li...
Subject: RE: [VuFind-Tech] Secondary sorting

Secondary sorting by relevance should be the default - if you don't specify anything else, I believe that will always be the last layer of sorting applied by Solr.

- Demian

From: Stewart Brownrigg [mailto:S.J...@ke...]
Sent: Thursday, June 16, 2011 10:03 AM
To: vuf...@li...
Subject: Re: [VuFind-Tech] Secondary sorting

Hi Demian,

Thank you for your help.  I have been experimenting with the [Sorting] options.  Is secondary sorting by relevance something else that is too complicated to implement?  Typically, it was the first thing I attempted (without reading about the limitation in the first place  - I have a tendency to jump in and try things out first and then read up afterwards!).

Stewart
--
Stewart J Brownrigg
S05A Cornwallis Octagon, University of Kent, Canterbury, Kent, CT2 7NF, UK
+44(0)1227 823621; S.J...@ke...<mailto:S.J...@ke...>

From: Demian Katz [mailto:dem...@vi...]
Sent: 15 June 2011 17:06
To: Stewart Brownrigg; vuf...@li...
Subject: RE: Secondary sorting

When you define your sort options in the [Sorting] section of searches.ini, you can define secondary sorting there - i.e.: "year desc,title asc = sort_year".  There is not currently a mechanism for dynamic secondary sorting based on prior search behavior - I have a feeling that could get a bit messy (tracking history in the session usually leads to headaches), though it might be possible to implement if you really want it.

- Demian

From: Stewart Brownrigg [mailto:S.J...@ke...]
Sent: Wednesday, June 15, 2011 12:02 PM
To: vuf...@li...
Subject: [VuFind-Tech] Secondary sorting

Hi,

Does VuFind/Solr do any secondary sorting?

What I mean by this is this:

I carry out a search that is returned to me by relevance; then I resort the results by Date (most recent first).

Where there are 20 results for 2011, will those 20 be in any particular order?

Personally, I would like to see these 20 ordered by the previous sort order, i.e. if the previous sort was by title, all of the results within 2011 would be in alphabetical order, but maybe from a user point of view a fixed order is better, such as relevance.

Regards,
Stewart
--
Stewart J Brownrigg
S05A Cornwallis Octagon, University of Kent, Canterbury, Kent, CT2 7NF, UK
+44(0)1227 823621; S.J...@ke...<mailto:S.J...@ke...>