UNLABELLED An object metamodel based on a standard scientific ontology has been developed and used to generate a CORBA interface, an SQL schema and an XML representation for macromolecular structure (MMS) data. In addition to the interface and schema definitions, the metamodel was also used to generate the core elements of a CORBA reference server and a JDBC database loader. The Java source cod...

Metamodels are used as analysis tools for solving optimization problems or as surrogates used as building blocks in larger scale simulations. The metamodel replaces the simulation model by a simplified input-output relationship, frequently a mathematical function with customized parameters. The construction of a metamodel is based on the simulation results for a set of design points. In order t...

Standardization within a discipline often reflects its maturity. Within software engineering, standardization occurs in many areas – here we focus on a recent ISO standard that has been developed for a methodology metamodel: the Software Engineering Metamodel for Development Methodologies, ISO/IEC 24744. Since its publication as a pure metamodel (represented by several UMLstyle class diagrams) ...

We consider the problem of building a standard electrocardiogram (ECG) from the electrical potential provided by a pacemaker in a few points of the heart (electrogram). We use a 3D mathematical model of the heart and the torso electrical activity, able to generate “computational ECG”, and a “metamodel” based on a kernel ridge regression. The input of the metamodel is the electrogram, its output...

An effective technique for generating instances of a metamodel should quickly and automatically generate instances satisfying the metamodel’s structural and OCL constraints. Ideally it should also produce quantitatively meaningful instances with respect to certain criteria, that is, instances which meet specified generic coverage criteria that help the modelers test or verify a metamodel at a g...

Social web applications like wikis, social networks, and crowdsourcing markets have provided people with new dynamic forms of communication and collaboration. Although communities have widely adopted these systems, the methodological support for their architecting is still at the beginning. Since social web applications are mediation environments for human interaction, environment-based coordin...

The main purpose of this study is to compare the performance of a group of second-order designs such as Box-Behnken, face-center cube, three-level factorial, central composite, minimum bias, and minimum variance plus bias for estimating a quadratic metamodel. A time-shared computer system is used to demonstrate the ability of the designs in providing good fit of the metamodel to the simulation ...

An important challenge in constraint programming is to rewrite constraint models into executable programs calculating the solutions. This phase of constraint processing may require translations between constraint programming languages, transformations of constraint representations, model optimizations, and tuning of solving strategies. In this paper, we introduce a pivot metamodel describing th...

A metamodel in simulation modeling, as also known as response surfaces, emulators, auxiliary models, etc. relates a simulation model’s outputs to its inputs without the need for further experimentation. A metamodel is essentially a regression model and mostly known as “the model of a simulation model”. A metamodel may be used for Validation and Verification, sensitivity or what-if analysis, and...