Hi Samarendra, This does look like a candidate for a custom query component if you want to do this inside Solr. You can of course continue to do this at the client.
-sujit On May 15, 2012, at 12:26 PM, Samarendra Pratap wrote: > Hi, > I need a suggestion for improving relevance of search results. Any > help/pointers are appreciated. > > We have following fields (plus a lot more) in our schema > > title > description > category_id (multivalued) > > We are using mm=70% in solrconfig.xml > We are using qf=title description > We are not doing phrase query in "q" > > In case of a multi-word search text, mostly the end results are the junk > ones. Because the words, mentioned in search text, are written in different > fields and in different contexts. > For example searching for "water proof" (without double quotes) brings a > record where title = "rose water" and description = "... no proof of > contamination ..." > > Our priority is to remove irrelevant results, as much as possible. > Increasing "mm" will not solve this completely because user input may not > be always correct to be benefited by high "mm". > > To remove irrelevant records we worked on following solution (or > work-around) > > - We are firing first query to get top "n" results. We assume that first > "n" results are mostly good results. "n" is dynamic within a predefined > minimum and maximum value. > - We are calculating frequency of category ids in these top results. We > are not using facets because that gives count for all, relevant or > irrelevant, results. > - Based on category frequencies within top matching results we are > trying to find a few most frequent categories by simple calculation. Now we > are very confident that these categories are the ones which best suit to > our query. > - Finally we are firing a second query with top categories, calculated > above, in filter query (fq). > > > The quality of results really increased very much so I thought to try it > the standard way. > Does it require writing a plugin if I want to move above logic into Solr? > Which component do I need to modify - QueryComponent? > > Or is there any better or even equivalent method in Solr of doing this or > similar thing? > > > > Thanks > > -- > Regards, > Samar
