Simulation modelling of the heterogeneous distributed information processing systems

Modelling For Ensuring Information Security Of The Distributed Information Systems

In the paper the concept of the permitted interactions is defined, i.e. such interactions are necessary for the tasks which are legally started at present. Any other interactions are considered as forbidden. The main objective is definition, what interactions are permitted during this period of time. For the solution of this problem it is offered to model the needs for interactions depending on...

Modelling Dynamic Forgetting in Distributed Information Systems

We describe and model a new aspect in the design of distributed information systems. We build upon a previously described problem on the microlevel, which asks how quickly agents should discount (forget) their experience: If they cherish their memories, they can build their reports on larger data sets; if they discount quickly, they can respond well to change in their environment. Here, we argu...

Mixed Qualitative/Quantitative Dynamic Simulation of Processing Systems

In this article the methodology proposed by Li and Wang for mixed qualitative and quantitative modeling and simulation of temporal behavior of processing unit is reexamined and extended to more complex case. The main issue of their approach considers the multivariate statistics of principal component analysis (PCA), along with clustered fuzzy digraphs and reasoning. The PCA and fuz...

Modelling Heterogeneous Information

In our previous work [shk94], we have discussed providing integrated and rapid access to existing heterogeneous information without any restructuring, reformatting or relocation of data. Such access is achieved through the generation of metadata that encapsulates the original information. We are currently working on designing a data modelling language aimed at controlling the metadata generatio...

Case Studies in Performance Modelling and Simulation of Distributed Information Systems