The work concerns automatic generation of logical specifications from requirements models. Logical specifications obtained in such a way can be subjected to formal verification using deductive reasoning. Formal verification concerns correctness of a model behaviour. Reliability of the requirements engineering is essential for all phases of software development processes. Deductive reasoning is ...

The aim of this paper is to use Dynamic Logic as a common logical framework to describe and identify the most relevant formal characteristics of Reflective Logical Architectures (RLA) in order to investigate the expressive power of the KBSs that can be built upon them, from now on called Reflective Knowledge Bases (RKB). In general, a RLA allows to build RKBs as a set of units with initial loca...

BACKGROUND AND OBJECTIVES This study examined the hypothesis that participants diagnosed with obsessive-compulsive disorder (OCD) show a selective deficit in inductive reasoning but are equivalent to controls in deductive reasoning. METHODS Twenty-five participants with OCD and 25 non-clinical controls made inductive and deductive judgments about a common set of arguments that varied in logic...

In this paper we discuss how computers can be deployed to support teaching deductive reasoning at university level. These considerations led to the development of the interactive theorem proving assistant and learning environment WinKE. We start out by describing common difficulties in teaching logic and deductive reasoning and thereby justify the need for computer support in that field. We ide...

The study examines the relationship between the development of logical processes required in deductive reasoning and their ocmsions of use. Verbal syllogism problems were presented to 4to 5-year-old children. The problems were systematically varied in content (fantasy premises; premises incongruent with real-world events; premises congruent with real-world events), form, and order of presentati...

The paper presents an approach for handling uncertain information in deductive databases using multivalued logics. Uncertainty means that database facts may be assigned logical values other than the conventional ones true and false. The logical values represent various degrees of truth, which may be combined and propagated by applying the database rules. A corresponding multivalued database sem...

Rich computer simulations or quantitative models can enable an agent to realistically predict real-world behavior with precision and performance that is difficult to emulate in logical formalisms. Unfortunately, such simulations lack the deductive flexibility of techniques such as formal logics and so do not find natural application in the deductive machinery of commonsense or general purpose r...

In this paper, a new first-order logical framework and method of formalizing and verifying cryptographic protocols is presented. From the point of view of an intruder, the protocol and abilities of the intruder are modeled in Horn clauses. Based on deductive reasoning method, secrecy of cryptographic protocols is verified automatically, and if the secrecy is violated, attack scenarios can be pr...

Over the years, logical framework research has produced various type theories designed primarily for the representation of deductive systems. Reasoning about these representations requires expressive special purpose meta logics, that are in general not part of the logical framework. In this work, we describe Lω , a meta logic for the linear logical framework LLF [CP96] and illustrate its use vi...