I suggest you to have a look in the mailing list archive and to search for the messages 'Lucene Scoring Behavior'.
Here is the link below:
http://issues.apache.org/eyebrowse/SearchList?listId=&listName=lucene-user%40jakarta.apache.org&searchText=%22lucene+scoring+behavior%22&defaultField=subject&Search=Search
Cheers, Franck
uddam chukmol wrote:
hi,
i'm not so convinced by the way Lucene compute the score. I tried to compare two string by using a program. In the program, i index the first string as if i indexed a document and use the queryParser with the same analyzer that I used to index the first string to analyze my second string and to form a query from it.
I run the program for the first time with the first string as: "This is the text to index with Lucene CREATE TABLE Elements ( TYPELEMENT varchar (255) NULL , CLEELEMENT varchar (255) NULL , LIBELEM varchar (255) NULL , CODENTITE varchar (255) NULL , CLEENTITE varchar (255) NULL , DONNNEEA1 varchar (255) NULL , DONNEEB1 varchar (255) NULL , DONNEEA2 varchar (255) NULL , DONNEEB2 varchar (255) NULL , DONNEEA3 varchar (255) NULL , DONNEEB3 varchar (255) NULL , DONNEEA4 varchar (255) NULL , DONNEEB4 varchar (255) NULL , DONNEEA5 varchar (255) NULL , DONNEEB5 varchar (255) NULL , TOP1 varchar (255) NULL , TOP2 varchar (255) NULL , TOP3 varchar (255) NULL , TOP4 varchar (255) NULL , TOP5 varchar (255) NULL , QTE1 varchar (255) NULL , QTE2 varchar (255) NULL , QTE3 varchar (255) NULL , MONTANT1 varchar (255) NULL , MONTANT2 varchar (255) NULL , MONTANT3 varchar (255) NULL , DATE1 varchar (255) NULL , DATE2 varchar (255) NULL , DATE3 varchar (255) NULL , STATUT varchar (255) NULL , DATPRISENCPTSTAT varchar (255) NULL )".
I used the same string as to form my query and i got the final score of these two string which is 1.0.
Then something suprised me when i changed to two strings into "All work and no play makes Jack a dull boy" and compared them by using one as a document and other to form the query. The result was just not 1.0. it was 0.3033.. instead. I used Eclipse as my Java Editor. Any conflict with Lucene?
Any idea/suggestion of what went wrong over here?
Uddam
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