80,758 research outputs found
Reasoning consistently about inconsistency
Patching et al. and Hinde et al. in their work on
truth-space mass assignments, presented a semantic unification
function and a semantic separation function for mass assignment
logic that dealt with inconsistency. This paper takes these
two functions and while preserving the outside inconsistencies
shows how inconsistency can be reasoned about in a consistent
manner. This means that inconsistency that arises outside the
system need not enter the system, but needs to be represented
within the system, and can therefore be extracted appropriately
as output from the system to emerge as inconsistency on the
outside. The internal reasoning system need therefore only
concern itself with belief in truth, falsity and uncertainty
Reasoning Consistently about Inconsistency
Patching et al. and Hinde et al. in their work on
truth-space mass assignments, presented a semantic unification
function and a semantic separation function for mass assignment
logic that dealt with inconsistency. This paper takes these
two functions and while preserving the outside inconsistencies
shows how inconsistency can be reasoned about in a consistent
manner. This means that inconsistency that arises outside the
system need not enter the system, but needs to be represented
within the system, and can therefore be extracted appropriately
as output from the system to emerge as inconsistency on the
outside. The internal reasoning system need therefore only
concern itself with belief in truth, falsity and uncertainty
On a Partial Decision Method for Dynamic Proofs
This paper concerns a goal directed proof procedure for the propositional
fragment of the adaptive logic ACLuN1. At the propositional level, it forms an
algorithm for final derivability. If extended to the predicative level, it
provides a criterion for final derivability. This is essential in view of the
absence of a positive test. The procedure may be generalized to all flat
adaptive logics.Comment: 18 pages. Originally published in proc. PCL 2002, a FLoC workshop;
eds. Hendrik Decker, Dina Goldin, Jorgen Villadsen, Toshiharu Waragai
(http://floc02.diku.dk/PCL/
Quantum Non-Objectivity from Performativity of Quantum Phenomena
We analyze the logical foundations of quantum mechanics (QM) by stressing
non-objectivity of quantum observables which is a consequence of the absence of
logical atoms in QM. We argue that the matter of quantum non-objectivity is
that, on the one hand, the formalism of QM constructed as a mathematical theory
is self-consistent, but, on the other hand, quantum phenomena as results of
experimenter's performances are not self-consistent. This self-inconsistency is
an effect of that the language of QM differs much from the language of human
performances. The first is the language of a mathematical theory which uses
some Aristotelian and Russellian assumptions (e.g., the assumption that there
are logical atoms). The second language consists of performative propositions
which are self-inconsistent only from the viewpoint of conventional
mathematical theory, but they satisfy another logic which is non-Aristotelian.
Hence, the representation of quantum reality in linguistic terms may be
different: from a mathematical theory to a logic of performative propositions.
To solve quantum self-inconsistency, we apply the formalism of non-classical
self-referent logics
An Approach to Cope with Ontology Changes for Ontology-based Applications
Keeping track of ontology changes is becoming a critical issue for ontology-based applications because updating an ontology that is in use may result in inconsistencies between the ontology and the knowledge base, dependent ontologies and dependent applications/services. Current research concentrates on the creation of ontologies and how to manage ontology changes in terms of the attempts to ease the communications between ontology versions and keep consistent with the instances, and there is little work available on controlling the impact to dependent applications/services which is the aims of the system presented in this paper. The approach we propose in this paper is to manually capture and log ontology changes, use this log to analyse incoming RDQL queries and amend them as necessary. Revised queries can then be used to query the knowledge base of the applications/services. We present the infrastructure of our approach based on the problems and scenarios identified within ontology-based systems. We discuss the issues met during our design and implementation, and consider some problems whose solutions will be beneficial to the development of our approach
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