Re: sort groups by the sum of the scores of the documents within each group

2014-05-11 Thread Frankcis
hei, Erick, Sorry to bother you again, i send the client requirement to you in the solr mail list, but i can't get your reply, i want your advice. 2014-05-06 13:24 GMT+08:00 Frankcis [via Lucene] ml-node+s472066n413486...@n3.nabble.com: thank you, Erick, you're good man, this is the client

Re: sort groups by the sum of the scores of the documents within each group

2014-05-05 Thread Erick Erickson
I don't think so. Solr excels at getting the score of single documents, not aggregation. It's not at all clear to me, though, that the sum of documents' scores is a reasonable thing to sort by. Consider grouping on a very common term. You'd never do this, but group on the elements of a text

Re: sort groups by the sum of the scores of the documents within each group

2014-05-05 Thread Frankcis
my scheme.xml: schema name=example core one version=1.1 types fieldtype name=string class=solr.StrField sortMissingLast=true omitNorms=true/ fieldType name=long class=solr.TrieLongField precisionStep=0 positionIncrementGap=0/ fieldType name=uuid class=solr.UUIDField indexed=true /

Re: sort groups by the sum of the scores of the documents within each group

2014-05-05 Thread Erick Erickson
You haven't answered _why_ this is a good idea. I'm having a hard time understanding what would be _useful_ about sorting this way. Just because the sum of scores in a group is greater than the sum of scores in another says _nothing_ about how relevant any of the docs in the group are relative to

Re: sort groups by the sum of the scores of the documents within each group

2014-05-05 Thread Frankcis
thank you, Erick, you're right, the maxScore of document within each group is more effective than the sum of scores in a group, especially some use-case just as your assumption(group 1 could have 10M documents all with a score of .01 and group 2 could have 1 document with a score of 1,000 and

Re: sort groups by the sum of the scores of the documents within each group

2014-05-05 Thread Frankcis
thank you, Erick, you're good man, this is the client requirement: In the forum, there is a lot of discussion of the content under different subjects, search for a keyword, which will lead to a result that the word of content or subject match the query, group these document based on every subject,