Yamine Ait Ameur

A Generic Formal Specification of Fusion of Modalities in a Multimodal Hci

This paper is an overview of a generic formal description allowing to encode multi-modal interactive systems, their behaviors and properties.

Toward a wider use of formal methods for aerospace systems design and verification

Nowadays, it is well accepted that the development of critical systems involves the use of formal methods. One of the major fields where these methods made a lot of progress are the avionics, aerospace and more generally transport areas. Several methods, tools and techniques have been applied for the development of such systems in different parts of the world, and they have been actually put into practice during the development of specific aircraft programs. The aim of this introductory article and of this STTT special issue is to propose a brief overview of the state-of-the-art of current researches in formal methods applied to the development of avionics and aerospace systems and more broadly to take stock of the integration of formal methods in the aerospace industry.

Towards Connecting Database Applications to Ontologies

Most database applications are designed according the ANSI/SPARC architecture. When it is used a large amount of semantics of data may be lost during the transformation from the conceptual model to a logical model. As a consequence exchanging/integrating various databases or generating user interfaces for data access become difficult. Ontologies seem an interesting solution to solve these problems, since they allow making explicit the semantics of data. In this paper, we propose an ontology-based approach for designing database applications, and then, for representing explicitly the semantics of data within the database. It consists in extending the ANSI/SPARC architecture with the ontological level. Note that this extension may also be added to existing applications designed according to the ANSI/SPARC architecture, since it preserves an upward compatibility.

SISRO, conception de bases de données à partir d'ontologies de domaine

Database design methodologies require both good modelling capabilities and knowledge of the field to be modelled. The first aspect is a one of the major difficulties for designers, since they have to move from one field to another one. Moreover, resulting databases are heterogeneous and difficult to integrate. In this paper, we propose a database design methodology, called SISRO. It is based on a prior definition of a local ontology for the database to be designed. This ontology is defined by specialization of shared domain ontologies, selective import of properties, and eventually extension with necessary concepts and/ or properties. The conceptual model is defined as a fragment of local ontology. Representing both ontologies and their articulations in the resulting database provides easy access, exchange and integration of data.

ABZ 2014: The Landing Gear Case Study

This paper describes the modeling, done using the Event-B notation, of the aircraft landing gear case study that is proposed in a special track of the ABZ’2014 Conference. In the course of our development, we discovered some problems in our initial modeling approach. This has led us to propose a second approach and then a third one. Each approach is more efficient than the previous one in terms of proof obligations (roughly speaking: 2000, 1000, 500). All this will be described in this paper. We also try to go beyond this specific case study and give some thoughts about large industrial modeling.

A formal model to handle the adaptability of multimodal user interfaces

In this paper we propose an approach for checking adaptability property of multimodal User Interfaces (UIs) for systems used in dynamic environments like mobile phones and PDAs. The approach is based on a formal description of both the multimodal interaction and the property. The SMV model-checking formal technique is used for the verification process of the property. The approach is defined in two steps. First, the system is described using a formal model, and the property is specified using CTL (Computation Tree Logic) temporal logic. Then, we assume that an environment changes such that at most one modality of the system is disabled. For this propose, Disable is defined as a formal operator that disables a modality in the system. The property is checked by using the SMV (Symbolic Model Verifier) model-checker on all systems resulting from desabling a modality of the system. The approach reduces the complexity of the model-checking process and allows the verification at earlier stages of the development life cycle. We apply this approach on a mobile phone case study.

Modélisation formelle d’IHM multimodales en sortie avec B Événementiel : approche par généralisation et instanciation

Les Interfaces Homme-Machine multimodales (IHM3) offx0brent a l’utilisateur la possibilite nde combiner les modalites d’interaction afin d’augmenter la robustesse et l’utilisabilite nde l’interface utilisateur d’un systeme. Plus particulierement, en sortie, les IHM3 permettent nau systeme de restituer a l’utilisateur, l’information produite par le noyau fonctionnel en combinant nsemantiquement plusieurs modalites. Dans l’optique de concevoir de telles interfaces npour des systemes critiques, nous avons propose un modele formel de conception des interfaces nmultimodales en sortie. Le modele propose se decompose en deux modeles : le modele nde fission semantique qui decrit la decomposition de l’information a restituer en informations nelementaires, et le modele d’allocation qui specifie l’allocation des modalites et medias aux ninformations elementaires. Nous avons egalement developpe une formalisation B Evenementiel ndetaillee des deux modeles : fission semantique et allocation. Cette formalisation B Evenementiel nrepose sur une demarche generique par raffix0enements successifs articulee autour de quatre nmodeles generiques parametres, accompagnes de mecanismes d’instanciation permettant l’utilisation ndes modeles generiques pour la formalisation d’interfaces concretes. Cet article est ndedie a la presentation de cette formalisation B Evenementiel, il decrit la demarche generale nde developpement B Evenementiel ainsi que les mecanismes d’instanciation.

New Trends in Databases and Information Systems: Contributions from ADBIS 2013

Research on database and information system technologies has been rapidly evolving over the last few years. Advances concern either new data types, new management issues, and new kind of architectures and systems. The 17th East-European Conference on Advances in Databases and Information Systems (ADBIS 2013), held on September 1–4, 2013 in Genova, Italy, and associated satellite events aimed at covering some emerging issues concerning such new trends in database and information system research. The aim of this paper is to present such events, their motivations and topics of interest, as well as briefly outline the papers selected for presentations. The selected papers will then be included in the remainder of this volume.

Thematic track: formal languages and methods for designing and verifying complex embedded systems

Nowadays, it is well accepted that the develop- ment of critical systems involves the use of formal methods. One of the major fields where these methods made a lot of progress are the avionics, aerospace, transport areas, telecom, etc. These systems are responsible for various functions, such as navigation, guidance, stability, power management, board/ground communications, passenger entertainment.... Moreover, their complexity is continuously growing.

Un cadre formel pour la spécification multivue de systèmes avioniques

This paper presents a component oriented framework dedicated to the specification of embedded systems in the aeronautics domain. A component is defined as a formal entity with three internal layers (hardware, operating system, applicative functions) together with a collection of models defined in different domain-oriented views. A categorical and institutional framework is proposed to provide a unified representation of the component calculus as well as the various formal models used for the analysis of the system. The framework and associated methodology are illustrated on a case study.