1. An apparatus for adjusting at least one number used to produce at least one predicted similarity score indicative of a predicted similarity between a first object and each of a plurality of second objects, the apparatus comprising: a scoring module having a first input operatively coupled to receive at least one of the at least one number, a second input operatively coupled to receive at least one second object, and a third input operatively coupled to receive at least a portion of the first object, the scoring module for generating and providing at a scoring module output the at least one predicted similarity score, each predicted similarity score generated responsive to at least one of the at least one number received at the first scoring module input, at least one second object received at the second scoring module input, and the first object received at the third scoring module input; and an adjuster module having a first input operatively coupled to receive an indicator of at least one selected second object, a second input operatively coupled to receive at least one of the at least one number, a third input coupled to the scoring module output for receiving at least one indicator of the predicted similarity scores of at least one second object including the second object corresponding to the indicator received at the first adjuster module input, the adjuster module for adjusting and providing at an output at least one of the at least one number responsive to a score of the second object corresponding to the indicator first input not higher than a score of at least one other second object.