Publications de Lam Son Lê | EPFL Graph Search

A Novel Approach to Modeling Enterprise Services Leveraging Object Cloning and Multilevel Classification

Object-oriented modeling is concerned with capturing common properties of objects. The dominant thinking in this realm is to classify objects that share certain properties into what is called a class, which in turn enables us to instantiate additional obje ...

IEEE2019

Hierarchy-oriented modeling of enterprise architecture using reference-model of open distributed processing

Alain Wegmann, Lam Son Lê

Modeling Enterprise Architecture (EA) requires the representation of multiple views for an enterprise. This could be done by a team of stakeholders that essentially have different backgrounds. One way to do this is to structure the model into hierarchical ...

2013

SeamCAD: a hierarchy-oriented modeling language and a computer-aided tool for entreprise architecture

Lam Son Lê

Modeling Enterprise Architecture requires representing multiple diagrams of an enterprise, which typically shows the multiples business entities, IT systems, even software components and the services they offer. This could be done by a team of stakeholders ...

EPFL2008

Business-IT Alignment with SEAM for Enterprise Architecture

Alain Wegmann, Gil Regev, José Diego de la Cruz Garcia, Lam Son Lê, Irina Rychkova

To align an IT system with an organization’s needs, it is necessary to understand the organization’s position within its environment a well as its internals. In SEAM for Enterprise Architecture the organization is considered as a hierarchy of systems that ...

IEEE2007

Teaching Enterprise and Service-Oriented Architecture in Practice

Alain Wegmann, Gil Regev, José Diego de la Cruz Garcia, Lam Son Lê, Irina Rychkova

Many companies expect their IT developers to understand their business strategy and to specify IT systems that will impact favorably the execution of their business strategy. Enterprise Architecture (EA) and Service-Oriented Architecture (SOA) address thes ...

2007

An Example of a Hierarchical System Model Using SEAM and its Formalization in Alloy

Alain Wegmann, Gil Regev, José Diego de la Cruz Garcia, Lam Son Lê, Irina Rychkova

SEAM is an enterprise architecture method based on RM-ODP part 2. In this paper, we present an example of a SEAM hierarchical model where the behavioral part is formalized in Alloy. We introduce four kinds of actions and their relationships to properties t ...

2007

From Business to IT with SEAM: J2EE Pet Store Example

Alain Wegmann, Gil Regev, Lam Son Lê, Irina Rychkova

Business and IT alignment demands clear traceability between the applications to be developed and the business requirements. SEAM is a systemic visual approach for modeling systems, including information systems and organizations. This paper illustrates ho ...

2007

Enterprise modeling using the foundation concepts of the RM-ODP ISO/ITU standard

Alain Wegmann, Gil Regev, Lam Son Lê

2007

Validation of Visual Contracts for Services

Alain Wegmann, José Diego de la Cruz Garcia, Lam Son Lê

Visual modeling languages have specialized diagrams to represent behavior and concepts. This diagram specialization has drawbacks like the dif-ficulty to represent the effects of actions. We claim that visual contracts can de-scribe actions in a more compl ...

2006

Implementation of a Modeling Tool Using Alloy as Meta-Modeling Language and CrocoPat as Validation Tool

Alain Wegmann, Lotfi Hussami, Lam Son Lê, Dirk Thilo Beyer

The context of our work is a project that focuses on methods and tools for modeling enterprise architectures. An enterprise architecture model represents the structure of an enterprise across multiple levels, from the markets in which it operates down to t ...

2006

SeamCAD: Object-Oriented Modeling Tool for Hierarchical Systems in Enterprise Architecture

Alain Wegmann, Lam Son Lê

Enterprise Architecture (EA) requires modeling enterprises across multiple levels (from markets down to IT systems). Providing tool support for such models is a challenge (e.g. model containment hierarchy, navigation difficulties, problems to relate elemen ...

2006

VISUAL CONTRACTS: A way to reason about states and cardinalities in IT system specifications

Alain Wegmann, José Diego de la Cruz Garcia, Lam Son Lê

Visual modeling languages propose specialized diagrams to represent behaviour and concepts necessary to specify IT systems. As a result, to understand a specification, the modeller needs to analyze these two types of diagrams and, often, additional stateme ...

2006

A Method and Tool for Business-IT Alignment in Enterprise Architecture

Alain Wegmann, Gil Regev, Pavel Balabko, Lam Son Lê, Irina Rychkova

Enterprise architects seek to align enterprise processes and structure with their supporting IT systems so that enterprises can flourish in their environment. The enterprise architecture (EA) discipline has emerged from business best practices. EA framewor ...

2005

An RM-ODP Based Ontology and a CAD Tool for Modeling Hierarchical Systems in Enterprise Architecture

Alain Wegmann, Lam Son Lê

Enterprise Architecture (EA) requires modeling enterprises across multiple levels (from markets down to IT systems) i.e. modeling hierarchical systems. Our goal is to build a Computer Aided Design (CAD) tool for EA. To be able to build this CAD tool, we ne ...

2005

Definition of an Object-Oriented Modeling Language for Enterprise Architecture

Alain Wegmann, Lam Son Lê

In enterprise architecture, the goal is to integrate business resources and IT resources in order to improve an enterprises competitiveness. In an enterprise architecture project, the development team usually constructs a model that represents the enterpri ...

2005