Alfredo Motta

Politecnico di Milano | Polimi

This article presents a novel technique to formally verify models of real-time systems captured through a set of heterogeneous UML diagrams. The technique is based on the following key elements: (i) a subset of Unified Modeling Language (UML) diagrams, called Coretto UML (C-UML), which allows designers to describe the components of the system and t...

Modern software systems are increasingly built by integrating different services implemented by independent organizations and offered in an open service marketplace. In such environment, multiple providers may compete with each other by publishing services that provide the same functionality, and export the same interface, but differ in the offered...

While many software design tools exist and are in use daily, when faced with a design problem, developers will more often then not turn to the whiteboard to work on potential solutions. It has been observed that the sketches that software engineers create in this process transition from quite informal, rough sketches to sketches that reflect design...

Formal verification and validation activities from the early development phases can foster system consistency, correctness, and integrity, but they are often hard to carry out as most designers do not have the necessary background. To address this difficulty, a possible approach is to allow engineers to continue using familiar notations and tools,...

UML is a well-known and widely used design notation: it offers a rich set of modeling elements, but their behavior is often not properly defined. Many proposals have tried to provide UML with a formal semantics, but they often focus on a limited number of diagram types, and thus do not provide a viable solution for the actual verification of comple...

The benefits of Model Driven Development may be achieved through exploitation of its potential for automation. Automated model verification is one of the most important examples of this. The usage of automated model verification in everyday software engineering practice is far from widespread. One of the reasons for this is that model designers do...

UML is a general-purpose modeling language that offers a heterogeneous set of diagrams to describe the different views of a software system. While there seems to be a general consensus on the semantics of some individual diagrams, the composite semantics of the different views is still an open problem. During my PhD I am considering a significant a...

This paper presents the approach to the formal verification of UML-based models of timed systems developed in the MADES project. The approach differs from many current ones in that it aims at (i) being inclusive in the range of diagrams considered when producing the formal model, and (ii) adhering to the UML notation as much as possible. The metric...

In this paper, we use UML Interaction Overview Diagrams as the basis for a user-friendly, intuitive, modeling notation that is well-suited for the design of complex, heterogeneous, embedded systems developed by domain experts with little background on modeling software-based systems. To allow designers to precisely analyze models written with this...

Modern software systems are increasingly built out of services that are developed, deployed, and operated by independent organizations, which expose them for the use by potential clients. Services may be directly invoked by clients. They may also be composed by service integrators, who in turn expose the composite artifact as a new service. We envi...

Atherosclerosis, a pathology affecting arterial blood vessels, is one of most common diseases of the developed countries. We present studies on the increased atherosclerosis risk using an agent based model of atherogenesis that has been previously validated using clinical data. It is well known that the major risk in atherosclerosis is the persiste...

We present an evolutionary approach to search for near-optimal solutions for the shortest path motion problem in three dimensions (between a starting and an ending point) in the presence of obstacles. The proposed genetic algorithm makes use of newly defined concepts of crossover and mutation and effective, problem optimized, methods for candidate...