Relational information gain

Marco Lippi

doi:10.1007/s10994-010-5194-7

Relational information gain

2010-07-10

6

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AI

DOI：10.1007/s10994-010-5194-7

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Abstract

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We introduce relational information gain, a refinement scoring function measuring the informativeness of newly introduced variables. The gain can be interpreted as a conditional entropy in a well-defined sense and can be efficiently approximately computed. In conjunction with simple greedy general-to-specific search algorithms such as FOIL, it yields an efficient and competitive algorithm in terms of predictive accuracy and compactness of the learned theory. In conjunction with the decision tree learner TILDE, it offers a beneficial alternative to lookahead, achieving similar performance while significantly reducing the number of evaluated literals.

Keywords:

Relational learning

Inductive logic programming

Information gain

Relational information gain

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