Title
Comparison of upward and downward generalizations in CF-Induction
Abstract
CF-induction is a sound and complete procedure for finding hypotheses in full clausal theories. It is based on the principle of Inverse Entailment (IE), and consists of two procedures: construction of a bridge theory and generalization of it. There are two possible ways to realize the generalization task in CF-induction. One uses a single deductive operator, called γ-operator, and the other uses a recently proposed form of inverse subsumption. Whereas both are known to retain the completeness of CF-induction, their logical relationship and empirical features have not been clarified yet. In this paper, we show their equivalence property and clarify the difference on their search strategies, which often leads to significant features on their obtained hypotheses.
Year
DOI
Venue
2011
10.1007/978-3-642-31951-8_31
ILP
Keywords
Field
DocType
single deductive operator,full clausal theory,inverse subsumption,bridge theory,logical relationship,downward generalization,empirical feature,generalization task,inverse entailment,equivalence property,complete procedure
Inverse,Discrete mathematics,Logical consequence,Algebra,Generalization,Computer science,Theoretical computer science,Equivalence (measure theory),Operator (computer programming),Completeness (statistics)
Conference
Citations 
PageRank 
References 
1
0.36
13
Authors
3
Name
Order
Citations
PageRank
Yoshitaka Yamamoto1297.50
Katsumi Inoue21271112.78
Koji Iwanuma313817.65