This paper discusses two ways to establish the connection between two levels in a multi-level model. The first approach uses normal associations and generalizations under the assumption that the multi levels are represented in one UML and OCL model. The second approach views a middle level model both as a type model and as an instance model and introduces operations to navigate between the type...

We present a simple stochastic rule-based approach to multilevel modelling for computational systems biology. Populations are modelled using multilevel multisets; these contain both species and agents, with the latter possibly containing further such multisets. Rules are pairs of such multisets, but now allowing variables to occur (as well as species and agents), together with an associated sto...

Currently, metaand multi-level modelling is gaining more and more attention. A natural, upcoming question is, how to extend existing two-level approaches to cover multi-levels. In this contribution, we extend the UML and OCL tool USE in order to describe multi-level models. We also apply the extension to demonstrate the usefulness of multi-level modelling for model querying and model quality as...

Multi-level conceptual modelling addresses the representation of subject domains dealing explicitly with multiple classification levels. Despite the recent advances in multi-level modelling techniques, we believe that many challenges in multi-level conceptual modelling still stem from the lack of theory that: (i) formally characterizes the nature of classification levels, and (ii) precisely def...

Multi-level modelling allows types and instances to be mixed in the same model, however there are several proposals for how metamodels can support this. This paper proposes a meta-circular basis for meta-modelling and shows how it supports two leading approaches to multi-level modelling.

Abstract Markov manpower planning models have extensively been analyzed in the past in order to find an optimal personnel strategy for which the manpower system evolves towards desirable stocks. So far, those models do not take into account interactions among different organizational decision levels. In this paper, a multi-level manpower planning model is presented that considers, besides the d...