2. The rule reasoner according to claim 1 , wherein the Rete network builder comprises: an input unit for receiving the reasoning rule; a determination unit for determining whether the received reasoning rule has a wild pattern; a selection unit for selecting the clue pattern corresponding to the wild pattern rule with reference to the ontology schema, if the received reasoning rule is a wild pattern rule having a wild pattern; and a building unit for rewriting the received wild pattern rule with reference to the clue pattern and adding the test node, the alpha memory node, and the wild rule node to the Rete network according to the rewritten wild pattern rule.
3. The rule reasoner according to claim 2 , wherein the rewritten wild pattern rule has only the clue pattern on a left side LHS and has the clue pattern removed from an original wild pattern rule on a right side RHS.