For the jpeg energy technique, the results may be improved by having the user select from the results, the images which she thinks are relevant. This may be done by clicking on the little box below each image in the results area. It suffices to restrict relevance to the first 8 or 16 images. Things to keep in mind. This is whole image matching.
Similarity is based on the entire content of the images.
The results are presented in rank order i.e. the entire database is ranked and presented. Similarity is visual. Functional or semantic notions of similarity are not dealt with here. The jpeg energy technique only compares images with the same number of jpeg blocks. The other technique does not have this limitation.