Abstract. We develop and analyze clause elimination procedures, a specific family of simplification techniques for conjunctive normal form (CNF) formulas. Extending known procedures such as tautology, subsumption, and blocked clause elimination, we introduce novel elimination procedures based on hidden and asymmetric variants of these techniques. We analyze the resulting nine (including five ne...

The present paper discusses a generalization operator based on the-subsumption ordering between Horn clauses introduced by the author elsewhere. It has been shown that-subsumption is strictly stronger than-subsumption and a local equivalent of generalized subsumption. With some language restrictions it is decidable and possesses some other useful properties. Most importantly it allows deening a...

Coinductive abstract compilation is a novel technique, which has been recently introduced for defining precise type systems for objectoriented languages. In this approach, type inference consists in translating the program to be analyzed into a Horn formula f , and in resolving a certain goal w.r.t. the coinductive (that is, the greatest) Herbrand model of f . Type systems defined in this way a...

A method based on Electrical Capacitance Tomography (ECT) and an improved Least Squares Support Vector Machine (LS-SVM) is proposed for void fraction measurement of oil-gas two-phase flow. In the modeling stage, to solve the two problems in LS-SVM, pruning skills are employed to make LS-SVM sparse and robust; then the Real-Coded Genetic Algorithm is introduced to solve the difficult problem...

Article 52(4) EPC, first sentence, represents an exclusion clause and, hence, should be narrowly construed and should not apply to treatments of the human or animal body which are not therapeutic in character or do not constitute a surgical or diagnostic method. The following comments shall give guidance to the reader as to what should be considered if patent protection is desired for an invent...