[ckan-dev] Solr schema adjustements

Wed Aug 12 00:03:46 UTC 2015

Hi Dan,

This is the sort of are that I've been meaning to add to the docs for
a while. You shouldn't need to mess around with the schema to do what
you require, as the schema already contains the tags the dataset has.
Although I may be misreading what you require.

I would use use boosting to improve the search relevency of the alpha
datasets. For example I can search for datasets containing a "test"
tag or a "economics" tag, but also boost the search relevency of any
dataset with the tag economics by typing  "(tags:Test) OR
(tags:economics)^2.0" into the default search box. You can see and
example of this on demo.ckan.org

http://demo.ckan.org/dataset?q=(tags%3ATest)+OR+(tags%3Aeconomics)^2.0

The economics results will appear above the test tag results as we've
boosted their relevency. I recommend you take a look at some of the
solr tutorials out there if you want to know more

http://www.solrtutorial.com/solr-search-relevancy.html

anything passed to q will be passed along to the q parameter in solr.
You could probably mess around with the front end templates to help
users construct this query instead of having users have to know solr
syntax, but as I said this is an area I've been meaning to add to the
docs for a while.

hope that helps a bit.

Joe

On 11 August 2015 at 15:28, Dan Mihaila <danmihaila at gmail.com> wrote:
> Hello,
> In our CKAN project (http://data.rwlabs.org) we would like to boost tags in search results. For example if an user searches "alpha" we would like to see in search results datasets that don't contain "alpha" in title or description,etc. but they have a tag named "alpha".
> My question is if it safe to play with SOLR schema (what could be the impact on other searches) and if there are any recommendations about this?
>
> Regards,
>  Dan Mihaila
>
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