Re: Custom Sort(0.2*relervanceScore + 0.8*numberic_field_value)

2013-08-19 Thread Jack Krupansky
Edismax applies the multiplicative boost (boost) after applying the 
additive boost functions (bf).


I think (0.2*relervance score + 0.8* specified_numberic_field) should be 
equivalent to:


0.2*(relevance score + (0.8/0.2)* specified_numeric_field)
or
0.2*(relevance score + 4.0* specified_numeric_field)

Unless the actual numeric range of the scores matters, just use:

relevance score + 4.0* specified_numeric_field

or

bf=mul(4.0, specified_numeric_field)

-- Jack Krupansky

-Original Message- 
From: 刘健

Sent: Monday, August 19, 2013 9:50 PM
To: solr-user
Subject: Custom Sort(0.2*relervanceScore + 0.8*numberic_field_value)

Hello:

I want to get final search result sorted by (0.2*relervance score + 
0.8* specified_numberic_field) .


I have known that if I use “bf”in edismax (e.g. bf=field(value)), I can get 
a result sorted by(relervance sore + field(value)) ,but I don`t know how to 
Implement the result sorted by (0.2*relervance score + 
0.8*specified_numberic_field) .


Thanks!

Leo 



Re: Custom Sort(0.2*relervanceScore + 0.8*numberic_field_value)

2013-08-19 Thread 刘健
Thank you very much!


Then could you tell me how to implement 
relervance_score*numberic_field/(relervance_score + numberic_field)  ? I think 
it's better to sort by harmmean 
 
 
-- Original --
From:  Jack Krupanskyj...@basetechnology.com;
Date:  Tue, Aug 20, 2013 10:47 AM
To:  solr-usersolr-user@lucene.apache.org; 

Subject:  Re: Custom Sort(0.2*relervanceScore + 0.8*numberic_field_value)

 
Edismax applies the multiplicative boost (boost) after applying the 
additive boost functions (bf).

I think (0.2*relervance score + 0.8* specified_numberic_field) should be 
equivalent to:

0.2*(relevance score + (0.8/0.2)* specified_numeric_field)
or
0.2*(relevance score + 4.0* specified_numeric_field)

Unless the actual numeric range of the scores matters, just use:

relevance score + 4.0* specified_numeric_field

or

bf=mul(4.0, specified_numeric_field)

-- Jack Krupansky

-Original Message- 
From: 刘健
Sent: Monday, August 19, 2013 9:50 PM
To: solr-user
Subject: Custom Sort(0.2*relervanceScore + 0.8*numberic_field_value)

Hello:

 I want to get final search result sorted by (0.2*relervance score + 
0.8* specified_numberic_field) .

I have known that if I use “bf”in edismax (e.g. bf=field(value)), I can get 
a result sorted by(relervance sore + field(value)) ,but I don`t know how to 
Implement the result sorted by (0.2*relervance score + 
0.8*specified_numberic_field) .

Thanks!

Leo