[help-GIFT] Effect of Normalization on Recall-Precision

[Sailesh Suvarna]

 Hi all,


   I  have a set of Ranked results taking one ,two and three images as 
relevant. Using the same queries for CIDF with normalization and without 
normalization ( blocking-(*i).second/=fabs(lQueryScore);in  CQInvertedFile.cc) 
and then calculating the Recall/Precision and Interpolated Recall Precision, I 
get the same results for both (with and w/o    normalization). I have attached 
the .ps graphs of these results.

   Is the normalization supposed to have any effect on Recall and Precision?

Sailesh Suvarna

HSV_GIFT-Intersection-No-Normalization.ps
Description: PostScript document

HSV_GIFT-Intersection-With-Normalization.ps
Description: PostScript document