Proceedings of the 1st International Workshop on Software Audits and Metrics, 2004
In this article, we present a study of the correlation between factorization and the quality crit... more In this article, we present a study of the correlation between factorization and the quality criterion of traceability. Our work is based on a set of new factorization metrics and a specific definition of traceability. The results of our experiment show a good correlation between the increase of the factorization of a UML class diagram and its traceability. 3 MACAO is a common project of France Telecom R&D, SOFTEAM and LIRMM (CNRS and University Montpellier 2.) supported by the french national network on software technologies RNTL 4 We define factorization as the amount of features (attributes and methods) that are shared through inheritance. The more features are shared, the better the factorization.
Refactoring of static software models, typically UML class diagrams, is aimed at re- covering the... more Refactoring of static software models, typically UML class diagrams, is aimed at re- covering the quality that deteriorates along a protracted evolution or due to a corrective main- tenance. Refactoring redistributes class members within the generalization hierarchy while op- erating rearrangements of various scope on the hierarchy, and possibly abstracting new classes from the initial ones. We present here an approach to refactoring whose scope includes, besides classes, the other elements, of a static model, i.e., associations, methods, attributes, etc. Based on an extension of classical concept analysis capable of processing relational information, our approach puts the emphasis on the proper processing of meta-links that help keep together the elements of a class model. Aspects of the approach, including two-way translation between UML and the analysis formats, semantic ambiguity processing, etc. are discussed as well.
2010 IEEE 18th International Conference on Program Comprehension, 2010
Softwares are designed to be used a significant amount of time, therefore maintenance represents ... more Softwares are designed to be used a significant amount of time, therefore maintenance represents an important part of their life cycle. It has been estimated that a lot of the time allocated to software maintenance is spent on the program comprehension. Many approaches using the program structure or external documentation have been created to ease the program comprehension. However, another important source of information is still not widely used for this purpose: the identifiers. In this article, we propose an approach, based on Natural Language Processing techniques, that automatically extracts and organizes concepts from software identifiers in a WordNet-like structure: lexical views. Those lexical views give useful insight on an overall software architecture and can be used to improve results of many software engineering tasks. The proposal is validated on a corpus of 24 open source softwares.
We shortly present here some characteristics of a toolset for the realization of interactive appl... more We shortly present here some characteristics of a toolset for the realization of interactive applications dealing with graphs and networks. This system is written for a UNIX workstation and uses an object oriented programming approach.
Proceedings Eighth IEEE Symposium on Software Metrics
In the context of object-oriented component development, software quality criteria are increasing... more In the context of object-oriented component development, software quality criteria are increasingly relevant. This proposal introduces software metrics based on a qualitative factorization criterion. Our approach takes into account the notion of a generic feature, which is a set of features that are semantically connected and partially ordered by specialization. These metrics help designers to evaluate the quality of a
2009 International Multiconference on Computer Science and Information Technology, 2009
Among the present crucial issues in UML Modeling, one of the most common is about the fusion of s... more Among the present crucial issues in UML Modeling, one of the most common is about the fusion of similar models coming from various sources. Several similar models are created in Software Engineering and it is of primary interest to compare them and, when possible, to craft a general model including a specific one, or just identify models that are in fact equivalent. Most present approaches are based on model structure comparison and alignment on strings for attributes and classe names. This contribution evaluates the added value of several combined NLP techniques based on lexical networks, POS tagging, and Dependency Rules application, and how they might improve the fusion of models. Topics: use of NLP techniques in practical applications.
Inheritance hierarchies often constitute the backbone of object-oriented systems. Their quality i... more Inheritance hierarchies often constitute the backbone of object-oriented systems. Their quality is therefore quite crucial. We present here our work the objective of which is to help designers to improve and to measure the quality of their inheritance hierarchies. The quality we deal with is the degree of factorization of information. Our work is based on the mathematical structure of Galois (concept) lattice which ensures, when applied to inheritance hierarchies, a maximal factorization of properties (methods and attributes) along with a minimal number of classes. Furthermore, the links between Galois lattice concepts have a direct correspondence with the inclusion relationships of class property sets in inheritance hierarchies.?
2012 IEEE 10th International Symposium on Parallel and Distributed Processing with Applications, 2012
The 4CaaSt project aims at developing a PaaS framework that enables flexible definition, marketin... more The 4CaaSt project aims at developing a PaaS framework that enables flexible definition, marketing, deployment and management of Cloud-based services and applications. The major innovations proposed by 4CaaSt are the blueprint and its lifecycle management, a one stop shop for Cloud services and a PaaS level resource management featuring elasticity. 4CaaSt also provides a portfolio of ready to use Cloud native services and Cloud-aware immigrant technologies.
Proceedings of the 1st International Workshop on Software Audits and Metrics, 2004
In this article, we present a study of the correlation between factorization and the quality crit... more In this article, we present a study of the correlation between factorization and the quality criterion of traceability. Our work is based on a set of new factorization metrics and a specific definition of traceability. The results of our experiment show a good correlation between the increase of the factorization of a UML class diagram and its traceability. 3 MACAO is a common project of France Telecom R&D, SOFTEAM and LIRMM (CNRS and University Montpellier 2.) supported by the french national network on software technologies RNTL 4 We define factorization as the amount of features (attributes and methods) that are shared through inheritance. The more features are shared, the better the factorization.
Refactoring of static software models, typically UML class diagrams, is aimed at re- covering the... more Refactoring of static software models, typically UML class diagrams, is aimed at re- covering the quality that deteriorates along a protracted evolution or due to a corrective main- tenance. Refactoring redistributes class members within the generalization hierarchy while op- erating rearrangements of various scope on the hierarchy, and possibly abstracting new classes from the initial ones. We present here an approach to refactoring whose scope includes, besides classes, the other elements, of a static model, i.e., associations, methods, attributes, etc. Based on an extension of classical concept analysis capable of processing relational information, our approach puts the emphasis on the proper processing of meta-links that help keep together the elements of a class model. Aspects of the approach, including two-way translation between UML and the analysis formats, semantic ambiguity processing, etc. are discussed as well.
2010 IEEE 18th International Conference on Program Comprehension, 2010
Softwares are designed to be used a significant amount of time, therefore maintenance represents ... more Softwares are designed to be used a significant amount of time, therefore maintenance represents an important part of their life cycle. It has been estimated that a lot of the time allocated to software maintenance is spent on the program comprehension. Many approaches using the program structure or external documentation have been created to ease the program comprehension. However, another important source of information is still not widely used for this purpose: the identifiers. In this article, we propose an approach, based on Natural Language Processing techniques, that automatically extracts and organizes concepts from software identifiers in a WordNet-like structure: lexical views. Those lexical views give useful insight on an overall software architecture and can be used to improve results of many software engineering tasks. The proposal is validated on a corpus of 24 open source softwares.
We shortly present here some characteristics of a toolset for the realization of interactive appl... more We shortly present here some characteristics of a toolset for the realization of interactive applications dealing with graphs and networks. This system is written for a UNIX workstation and uses an object oriented programming approach.
Proceedings Eighth IEEE Symposium on Software Metrics
In the context of object-oriented component development, software quality criteria are increasing... more In the context of object-oriented component development, software quality criteria are increasingly relevant. This proposal introduces software metrics based on a qualitative factorization criterion. Our approach takes into account the notion of a generic feature, which is a set of features that are semantically connected and partially ordered by specialization. These metrics help designers to evaluate the quality of a
2009 International Multiconference on Computer Science and Information Technology, 2009
Among the present crucial issues in UML Modeling, one of the most common is about the fusion of s... more Among the present crucial issues in UML Modeling, one of the most common is about the fusion of similar models coming from various sources. Several similar models are created in Software Engineering and it is of primary interest to compare them and, when possible, to craft a general model including a specific one, or just identify models that are in fact equivalent. Most present approaches are based on model structure comparison and alignment on strings for attributes and classe names. This contribution evaluates the added value of several combined NLP techniques based on lexical networks, POS tagging, and Dependency Rules application, and how they might improve the fusion of models. Topics: use of NLP techniques in practical applications.
Inheritance hierarchies often constitute the backbone of object-oriented systems. Their quality i... more Inheritance hierarchies often constitute the backbone of object-oriented systems. Their quality is therefore quite crucial. We present here our work the objective of which is to help designers to improve and to measure the quality of their inheritance hierarchies. The quality we deal with is the degree of factorization of information. Our work is based on the mathematical structure of Galois (concept) lattice which ensures, when applied to inheritance hierarchies, a maximal factorization of properties (methods and attributes) along with a minimal number of classes. Furthermore, the links between Galois lattice concepts have a direct correspondence with the inclusion relationships of class property sets in inheritance hierarchies.?
2012 IEEE 10th International Symposium on Parallel and Distributed Processing with Applications, 2012
The 4CaaSt project aims at developing a PaaS framework that enables flexible definition, marketin... more The 4CaaSt project aims at developing a PaaS framework that enables flexible definition, marketing, deployment and management of Cloud-based services and applications. The major innovations proposed by 4CaaSt are the blueprint and its lifecycle management, a one stop shop for Cloud services and a PaaS level resource management featuring elasticity. 4CaaSt also provides a portfolio of ready to use Cloud native services and Cloud-aware immigrant technologies.
Uploads
Papers by Michel Dao