A system and related method are provided for dynamically modifying a rule-based matching system. The method comprises using a processor for receiving a plurality of rules that are stored in a matching metadata database in a storage device, and receiving a plurality of entities as inputs. The method further comprises determining a degree of matching between a first entity and a second entity of the plurality of entities, using at least two of the plurality of rules that contribute to the degree of matching. The method then outputs the determined degree of matching to a display device, and dynamically modifies, at run-time, at least one of the plurality of rules.