Vlad Acretoaie

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—This paper presents a new technique for semantic Web service composition inspired by the behavior of ants. The proposed technique combines a service composition graph model with the ant colony optimization metaheuristic to identify the optimal composition solution. The following criteria are considered to select the optimal composition solution: the QoS(More)
The Visual Model Query Language (VMQL) has been invented with the objectives (1) to make it easier for modelers to query models effectively, and (2) to be universally applicable to all modeling languages. In previous work, we have applied VMQL to UML, and validated the first of these two claims. In this paper, we apply VMQL to the Business Process Modeling(More)
Context: Modeling tools are traditionally delivered as mono-lithic desktop applications, optionally extended by plug-ins or special purpose central servers. This delivery model suffers from several drawbacks, ranging from poor scalability to difficult maintenance and the proliferation of " shelfware ". Objective: In this paper we investigate the conceptual(More)
Model transformation is a key enabling technology of Model-Driven Engineering (MDE). Existing model transformation languages are shaped by and for MDE practitioners—a user group with needs and capabilities which are not necessarily characteristic of modelers in general. Consequently, these languages are largely ill-equipped for adoption by end-user modelers(More)