2. The computer-implemented system of claim 1 , wherein the evaluation of the set of rules comprises an evaluation in a direction from the first product description to the second product description and an evaluation in a direction from the second product description to the first product description.
2. The computer-implemented system of claim 1 , wherein the evaluation of the set of rules comprises an evaluation in a direction from the first product description to the second product description and an evaluation in a direction from the second product description to the first product description. 5. The computer-implemented system of claim 2 , wherein the evaluation of the set of rules is performed in an asymmetrical manner.