Czasopismo | ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA | Rocznik 2013 - zeszyt 8

An ontology based intelligent diagnostic system of steel corrosion protection

nr katalogowy: 78808

The use of intelligent systems (based on knowledge) to solve applied problems becomes widespread. The main reason for this approach is the attempt to integrate knowledge of the subject area in which functions the intellectual system in the system knowledge base and then process this knowledge in order to obtain effective solutions. Therefore an elaboration of an intellectual system of diagnostics of corrosion is an actual scientific problem. There are number of methods and approaches for solving the problem of corrosion monitoring and protection, which can be represented in the form of formal knowledge. Knowledge of the subject area in which such a system operate is a methods and stages of testing, expenses necessary to carry out these steps by different methods and benefits from the use of specific method. Ontology is a method of formal knowledge representation. Therefore a formal problem statement of diagnostics of materials corrosion, which is solved by using intelligent system will look like as follows [1-3]. Let the intelligent diagnostic system (IDS) must decide solution for protection structures of metal from corrosion. Structures of metal is in some state, which called the initial state St(0). This state is characterized by a set of attributes X = {x1,?c,xn} (as example for pipeline it may be - lifetime, the diameter of the pipe, material for realizing processing, etc. The values which take these signs zi = z(xi), xi ?¸ X define the value function of utility f = f (Z), Z = (z1,?c,zn) this structures of metal. Obviously, that not all signs have the same effect on the value f. Therefore it is appropriate to consider a subset of attributes XW ?Ľ X where W is the weight of importance of attributes (as example for pipeline it may be . lifetime). Obviously, that the values of attributes are interdependent. The goal of IDS is processing structures of metal, that is put it in some state (call it the target state Goal), for g[...]

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