Re: How to Facet on a price range
Kudos to Jan's pre-compute option and gwk's range facet answer. On Wed, Nov 10, 2010 at 2:52 PM, Geert-Jan Brits gbr...@gmail.com wrote: Ah I see: like you said it's part of the facet range implementation. Frontend is already working, just need the 'update-on-slide' behavior. Thanks Geert-Jan 2010/11/10 gwk g...@eyefi.nl On 11/9/2010 7:32 PM, Geert-Jan Brits wrote: when you drag the sliders , an update of how many results would match is immediately shown. I really like this. How did you do this? IS this out-of-the-box available with the suggested Facet_by_range patch? Hi, With the range facets you get the facet counts for every discrete step of the slider, these values are requested in the AJAX request whenever search criteria change and then someone uses the sliders we simply check the range that is selected and add the discrete values of that range to get the expected amount of results. So yes it is available, but as Solr is just the search backend the frontend stuff you'll have to write yourself. Regards, gwk
Re: How to Facet on a price range
On 11/9/2010 7:32 PM, Geert-Jan Brits wrote: when you drag the sliders , an update of how many results would match is immediately shown. I really like this. How did you do this? IS this out-of-the-box available with the suggested Facet_by_range patch? Hi, With the range facets you get the facet counts for every discrete step of the slider, these values are requested in the AJAX request whenever search criteria change and then someone uses the sliders we simply check the range that is selected and add the discrete values of that range to get the expected amount of results. So yes it is available, but as Solr is just the search backend the frontend stuff you'll have to write yourself. Regards, gwk
Re: How to Facet on a price range
Ah I see: like you said it's part of the facet range implementation. Frontend is already working, just need the 'update-on-slide' behavior. Thanks Geert-Jan 2010/11/10 gwk g...@eyefi.nl On 11/9/2010 7:32 PM, Geert-Jan Brits wrote: when you drag the sliders , an update of how many results would match is immediately shown. I really like this. How did you do this? IS this out-of-the-box available with the suggested Facet_by_range patch? Hi, With the range facets you get the facet counts for every discrete step of the slider, these values are requested in the AJAX request whenever search criteria change and then someone uses the sliders we simply check the range that is selected and add the discrete values of that range to get the expected amount of results. So yes it is available, but as Solr is just the search backend the frontend stuff you'll have to write yourself. Regards, gwk
Re: How to Facet on a price range
Just to add to this, if you want to allow the user more choice in his option to select ranges, perhaps by using a 2-sided javasacript slider for the pricerange (ala kayak.com) it may be very worthwhile to discretize the allowed values for the slider (e.g: steps of 5 dolllar) Most js-slider implementations allow for this easily. This has the advantages of: - having far fewer possible facetqueries and thus a far greater chance of these facetqueries hitting the cache. - a better user-experience, although that's debatable. just to be clear: for this the Solr-side would still use: facet=onfacet.query=price:[50 TO *]facet.query=price:[* TO 100] and not the optimized pre-computed variant suggested above. Geert-Jan 2010/11/9 jayant jayan...@hotmail.com That was very well thought of and a clever solution. Thanks. -- View this message in context: http://lucene.472066.n3.nabble.com/How-to-Facet-on-a-price-range-tp1846392p1869201.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: How to Facet on a price range
That was very well thought of and a clever solution. Thanks. -- View this message in context: http://lucene.472066.n3.nabble.com/How-to-Facet-on-a-price-range-tp1846392p1869201.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: How to Facet on a price range
Hi, Instead of all the facet queries, you can also make use of range facets (http://wiki.apache.org/solr/SimpleFacetParameters#Facet_by_Range), which is in trunk afaik, it should also be patchable into older versions of Solr, although that should not be necessary. We make use of it (http://www.mysecondhome.co.uk/search.html) to create the nice sliders Geert-Jan describes. We've also used it to add the sparklines above the sliders which give a nice indication of how the current selection is spread out. Regards, gwk On 11/9/2010 3:33 PM, Geert-Jan Brits wrote: Just to add to this, if you want to allow the user more choice in his option to select ranges, perhaps by using a 2-sided javasacript slider for the pricerange (ala kayak.com) it may be very worthwhile to discretize the allowed values for the slider (e.g: steps of 5 dolllar) Most js-slider implementations allow for this easily. This has the advantages of: - having far fewer possible facetqueries and thus a far greater chance of these facetqueries hitting the cache. - a better user-experience, although that's debatable. just to be clear: for this the Solr-side would still use: facet=onfacet.query=price:[50 TO *]facet.query=price:[* TO 100] and not the optimized pre-computed variant suggested above. Geert-Jan 2010/11/9 jayantjayan...@hotmail.com That was very well thought of and a clever solution. Thanks. -- View this message in context: http://lucene.472066.n3.nabble.com/How-to-Facet-on-a-price-range-tp1846392p1869201.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: How to Facet on a price range
@ http://www.mysecondhome.co.uk/search.htmhttp://www.mysecondhome.co.uk/search.html -- when you drag the sliders , an update of how many results would match is immediately shown. I really like this. How did you do this? IS this out-of-the-box available with the suggested Facet_by_range patch? Thanks, Geert-Jan 2010/11/9 gwk g...@eyefi.nl Hi, Instead of all the facet queries, you can also make use of range facets ( http://wiki.apache.org/solr/SimpleFacetParameters#Facet_by_Range), which is in trunk afaik, it should also be patchable into older versions of Solr, although that should not be necessary. We make use of it (http://www.mysecondhome.co.uk/search.html) to create the nice sliders Geert-Jan describes. We've also used it to add the sparklines above the sliders which give a nice indication of how the current selection is spread out. Regards, gwk On 11/9/2010 3:33 PM, Geert-Jan Brits wrote: Just to add to this, if you want to allow the user more choice in his option to select ranges, perhaps by using a 2-sided javasacript slider for the pricerange (ala kayak.com) it may be very worthwhile to discretize the allowed values for the slider (e.g: steps of 5 dolllar) Most js-slider implementations allow for this easily. This has the advantages of: - having far fewer possible facetqueries and thus a far greater chance of these facetqueries hitting the cache. - a better user-experience, although that's debatable. just to be clear: for this the Solr-side would still use: facet=onfacet.query=price:[50 TO *]facet.query=price:[* TO 100] and not the optimized pre-computed variant suggested above. Geert-Jan 2010/11/9 jayantjayan...@hotmail.com That was very well thought of and a clever solution. Thanks. -- View this message in context: http://lucene.472066.n3.nabble.com/How-to-Facet-on-a-price-range-tp1846392p1869201.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: How to Facet on a price range
I am able to facet on a particular field because I have index on that field. But I am not sure how to facet on a price range when I have the exact price in the 'price' field. Can anyone help here. Something like this: facet=onfacet.query=price:[* TO 500]facet.query=price:[500 TO *] Additionally you can get min and max price of your query results with http://wiki.apache.org/solr/StatsComponent
Re: How to Facet on a price range
take a look here http://stackoverflow.com/questions/33956/how-to-get-facet-ranges-in-solr-results I am able to facet on a particular field because I have index on that field. But I am not sure how to facet on a price range when I have the exact price in the 'price' field. Can anyone help here. Thanks -- http://jetwick.com twitter search prototype
Re: How to Facet on a price range
Thank you both. Faceting is now working on a range. -- View this message in context: http://lucene.472066.n3.nabble.com/How-to-Facet-on-a-price-range-tp1846392p1848716.html Sent from the Solr - User mailing list archive at Nabble.com.
Re: How to Facet on a price range
Note that using many facet.query= parameters may be expensive.
Another way to solve this is to pre-compute the ranges as plain strings in
another field during indexing.
This can be done in your app prior to indexing or by creating a new FieldType
for your range. Here's a field type that computes the strings for you. Simply
do a copyField from your price field to e.g. price_s, and facet on
price_s instead of price:
fieldtype name=priceclass class=solr.TextField
analyzer
tokenizer class=solr.KeywordTokenizerFactory/
filter class=solr.PatternReplaceFilterFactory
pattern=^([0-9]{0,2})([\.,][0-9]{1,2})?$ replacement=0 - 99 replace=all /
filter class=solr.PatternReplaceFilterFactory
pattern=^(1[0-9][0-9]|2[0-4][0-9]|)([\.,][0-9]{1,2})?$ replacement=100 -
249 replace=all /
filter class=solr.PatternReplaceFilterFactory
pattern=^(2[5-9][0-9]|[3-4][0-9][0-9])([\.,][0-9]{1,2})?$ replacement=250 -
499 replace=all /
filter class=solr.PatternReplaceFilterFactory
pattern=^([5-9][0-9][0-9])([\.,][0-9]{1,2})?$ replacement=500 - 999
replace=all /
filter class=solr.PatternReplaceFilterFactory
pattern=^([0-9]{4,5})([\.,][0-9]{1,2})?$ replacement=999 - replace=all /
/analyzer
/fieldtype
It adds to your index size, but is optimized for query speed.
--
Jan Høydahl, search solution architect
Cominvent AS - www.cominvent.com
On 5. nov. 2010, at 16.03, jayant wrote:
Thank you both. Faceting is now working on a range.
--
View this message in context:
http://lucene.472066.n3.nabble.com/How-to-Facet-on-a-price-range-tp1846392p1848716.html
Sent from the Solr - User mailing list archive at Nabble.com.
How to Facet on a price range
I am able to facet on a particular field because I have index on that field. But I am not sure how to facet on a price range when I have the exact price in the 'price' field. Can anyone help here. Thanks -- View this message in context: http://lucene.472066.n3.nabble.com/How-to-Facet-on-a-price-range-tp1846392p1846392.html Sent from the Solr - User mailing list archive at Nabble.com.
