solr scoring - fieldnorm

Question

I have the following records and the scores against it when I search for \"iphone\" -

Record1: FieldName - DisplayName : \"Iphone\" FieldName - Name : \"Iphone\"

Answer 1

fieldnorm takes into account the field length i.e. the number of terms.
The fieldtype used is text for the fields display name & name, which would have the stopwords and the word delimiter filters.

Record 1 - Iphone
Would generate a single token - IPhone

Record 2 - The Iphone Book
Would generate 2 tokens - Iphone, Book
The would be removed by the stopwords.

Record 3 - iPhone
Would also generate 2 tokens - i,phone
As iPhone has a case change, the word delimiter filter with splitOnCaseChange would now split iPhone into 2 tokens i, Phone and would produce the field norm same as Record 2