ILP : - Just Trie It

Abstract. Despite the considerable success of Inductive Logic Programming, deployed ILP systems still have efficiency problems when applied to complex problems. Several techniques have been proposed to address the efficiency issue. Such proposals include query transformations, query packs, lazy evaluation and parallel execution of ILP systems, to mention just a few. We propose a novel technique to improve the execution time of an ILP system that avoids the procedure of deducing each example to evaluate each constructed clause. The technique takes advantage of the two stage procedure of Mode Directed Inverse Entailment (MDIE) systems. In the first stage of a MDIE system, where the bottom clause is constructed, we store not only the bottom clause but also valuable additional information. The information stored is sufficient to evaluate the clauses constructed in the second stage without the need for a theorem prover. We used a data structure called Trie to efficiently store all bottom c...

• Type: Conference
• Year: 2007
• Where: ILP
• Authors: Rui Camacho, Nuno A. Fonseca, Ricardo Rocha, Vítor Santos Costa
• Keywords: Artificial Intelligence, Execution Time, ILP 2007, ILP Systems, Inductive Logic Programming