Publications

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2016
Silva, L., A. Moreira, J. Araújo, C. Gralha, M. Goulão, and V. Amaral, "Exploring Views for Goal-Oriented Requirements Models", 35th International Conference on Conceptual Modeling, ER2016, Gifu, Japan, 14-17 Nov., 2016. Abstract

http://er2016.cs.titech.ac.jp/

silva2016er.pdf

Requirements documents and models need to be used by many stakeholders with di erent technological pro ciency, during software development. Each stakeholder may need to understand the entire (or simply part of the) requirements artifacts. To empower those stakeholders, views of the requirements should be con gurable to their particular needs. Information visualization techniques may help in this process. In this paper, we propose di erent views aimed at highlighting information that is relevant for a particular stakeholder, helping him to query requirements artifacts. We o er three kinds of visualization capturing language and domain elements, while providing a gradual model overview: the big picture view, the syntax-based view, and the concern-based view. We instantiate these views with i* models and introduce an implementation prototype in the iStarLab tool.

Santos, M., C. Gralha, M. Goulão, J. Araújo, A. Moreira, and J. Cambeiro, "What is the Impact of Bad Layout in the Understandability of Social Goal Models?", 24th IEEE International Conference on Requirements Engineering, Beijing, China, IEEE, 12-16, Sep., 2016. Abstractre_2016_eyetracker_istar.pdf

The i* community has published guidelines, including model layout guidelines, for the construction of models. Our goal is to evaluate the effect of the layout guidelines on the i* novice stakeholders’ ability to understand and review i* models. We conducted a quasi-experiment where participants were given two understanding and two reviewing tasks. Both tasks involved a model with a bad layout and another model following the i* layout guidelines. We evaluated the impact of layouts by combining the success level in those tasks and the required effort to accomplish them. Effort was assessed using time, perceived complexity (with NASA TLX), and eye-tracking data. Participants were more successful in understanding than in reviewing tasks. However, we found no statistically significant difference in the success, time taken, or perceived complexity, between tasks conducted with models with a bad layout and models with a good layout. Most participants had little to no prior knowledge in i*, making them more representative of stakeholders with no requirements engineering expertise. They were able to understand the models fairly well after a short tutorial, but struggled when reviewing models. Adherence to the existing i* layout guidelines did not significantly impact i* model understanding and reviewing performance.

2015
Störrle, H., M. R. V. Chaudron, V. Amaral, and M. Goulão, "First International Workshop on Human Factors in Modeling (HuFaMo 2015) @ MODELS 2015 - Preface", First International Workshop on Human Factors in Modeling (HuFaMo 2015) @ MODELS 2015, Ottawa, Canada, 28 Sep., 2015.
Ameller, D., X. Franch, C. Gómez, J. Araújo, R. B. Svensson, S. Biffl, J. Cabot, V. Cortellessa, M. Daneva, D. M. Fernández, A. Moreira, H. Muccini, A. Vallecillo, M. Wimmer, V. Amaral, H. Brunelière, L. Burgueño, M. Goulão, B. Schätz, and S. Teufl, "Handling Non-Functional Requirements in Model-Driven Development: An Ongoing Industrial Survey", 23rd International Conference on Requirements Engineering (RE'15) - RE: Next!, Ottawa, Canada, IEEE Computer Society, 24-28 August, 2015.
2014
Sabino, A., Armanda Rodrigues, M. Goulão, and J. Gouveia, "Indirect Keyword Recommendation", International Conference on Intelligent Agent Technology, WIC 2014, Warsaw, Poland, IEEE/WIC/ACM, 11-14 August, 2014. Abstractsabino2014wic.pdf

Helping users to find useful contacts or potentially interesting subjects is a challenge for social and productive
networks. The evidence of the content produced by users must be considered in this task, which may be simplified by the use of the meta-data associated with the content, i.e., the categorization supported by the network – descriptive keywords, or tags. In this paper we present a model that enables keyword discovery
methods through the interpretation of the network as a graph, solely relying on keywords that categorize or describe productive items. The model and keyword discovery methods presented in this paper avoid content analysis, and move towards a generic approach to the identification of relevant interests and, eventually,
contacts. The evaluation of the model and methods is executed by two experiments that perform frequency and classification analyses over the Flickr network. The results show that we can efficiently recommend keywords to users.

2013
Araújo, J., M. Goulão, A. Moreira, I. Simão, V. Amaral, and E. Baniassad, "Advanced Modularity for Building SPL Feature Models: a Model-Driven Approach", 28th ACM Symposium on Applied Computing, Requirements Engineering Track, ACM-SAC 2013, Coimbra, Portugal, ACM, 18-22 Mar., 2013. Abstractaraujo2013sac.pdf

Feature Models are commonly used to specify commonalities and variabilities in Software Product Lines (SPL). Our goal is to enhance feature modeling with traceability and improved support for crosscutting concerns. While traceability will show the features’ requirement-origins, providing means to reason about
their existence, crosscutting concerns will be handled through advanced modularity mechanisms (e.g. aspects), making the impact of changes to SPL models less difficult to understand and analyze. The result is Theme/SPL, a novel SPL requirements technique based on a concern-driven approach (Theme/Doc). Theme/SPL includes the proposal of a domain-specific language for specifying Theme/Doc models and uses model-driven development to generate automatically feature models from them. We show the applicability of the technique through a case study using a within-group design to evaluate the final results and tools developed.

2011
Goulão, M., A. Moreira, J. Araújo, and J. P. Santos, "Streamlining scenario modeling with Model-Driven Development: a case study", Model-Driven Requirements Engineering Workshop (MoDRE 2011), at the 19th International Requirements Engineering Conference (RE 2011), Trento, Italy, IEEE Computer Society, pp. 55-63, 29 Aug., 2011. Abstract

http://dx.doi.org/10.1109/MoDRE.2011.6045367

modre2011-cameraready.pdf

Scenario modeling can be realized through different perspectives. In UML, scenarios are often modeled with activity models, in an early stage of development. Later, sequence diagrams are used to detail object interactions. The migration from activity diagrams to sequence diagrams is a repetitive and error-prone task. Model-Driven Development (MDD) can help streamlining this process, through transformation rules. Since the information in the activity model is insufficient to generate the corresponding complete sequence model, manual refinements are required. Our goal is to compare the relative effort of building the sequence diagrams manually with that of building them semi-automatically. Our results show a decrease in the number of operations required to build and refine the sequence model of approximately 64% when using MDD, when compared to the manual approach.

2010
Santos, J. P., A. Moreira, J. Araújo, and M. Goulão, "Increasing Quality in Scenario Modelling with Model-Driven Development", 7th International Conference on the Quality of Information and Communications Technology (QUATIC'2010), Porto, Portugal, IEEE Computer Society, pp. 204-209, 29 Sep.-2 Oct., 2010. Abstract

http://dx.doi.org/10.1109/QUATIC.2010.36

santos_et_al_quatic2010.pdf

Models, with different levels of detail, share similar abstractions that can be reused by means of model-driven techniques such as transformations. For example, scenarios are a well-known technique in requirements engineering to represent behavioral flows in a software system. When using UML, scenarios are typically represented with activity models in the early stages of software development, while sequence models are used to describe more detailed object interactions as modeling progresses. This paper defines transformation rules to automate the migration from activity to sequence models. We present a case study illustrating the application of our transformation rules. Our preliminary assessment of the impact of the benefits of using these transformations points to: (i) a reduction of around 50% in the effort building sequence models, (ii) increased trace ability among models, and (iii) error prevention when migrating from different scenario notations.

2005
Alanen, M., J. Cabot, M. Goulão, and J. Sáez, "Doctoral symposium", UML Modeling Languages and Applications, vol. 3297: Springer Berlin / Heidelberg, pp. 85-93, 2005. Abstract

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Goulão, M., and F. B. Abreu, "Formal Definition of Metrics upon the CORBA Component Model", First International Conference on the Quality of Software Architectures (QoSA'2005), and Proceedings of the Second International conference on Software Quality, vol. 3712, Erfurt, Germany, Springer, pp. 88-105, 2005. Abstract

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2002
Goulão, M., and F. B. Abreu, "From Objects to Components - A Quantitative Experiment", 6th International Workshop on Quantitative Approaches in Object-Oriented Software Engineering QAOOSE'2002, Málaga, Spain, 2002. Abstract

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2001
e Abreu, F. B., and M. Goulão, "Coupling and Cohesion as Modularization Drivers: Are we being over-persuaded?", 5th European Conference on Software Maintenance and Reengineering (CSMR'2001), Lisboa, Portugal, IEEE Computer Society Press, pp. 47-57, 2001. Abstract

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1999
Monteiro, A. S., M. Goulão, F. B. Abreu, A. B. Almeida, and P. Sousa, "Controlling the Evolution of Legacy Systems Using Internet Technology: A Defect Report and Tracking System", 6th European Conference on Software Quality, Vienna, Austria, European Organization for Quality, pp. 473-483, 1999. Abstract

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Abreu, F. B., L. M. Ochoa, and M. Goulão, "The GOODLY Design Language for MOOD2 Metrics Collection", 3rd ECOOP Workshop on Quantitative Approaches in Object-Oriented Software Engineering (QAOOSE'1999), Lisbon, Portugal, 1999. Abstract

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Goulão, M., A. S. Monteiro, N. P. Ribeiro, A. B. Almeida, F. B. Abreu, and P. Sousa, III Relatório de Actividades do Protocolo Marinha Portuguesa / INESC, : DAMAG / INESC, 1999. Abstract

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Monteiro, A. S., A. B. Almeida, M. Goulao, F. B. Abreu, and P. Sousa, "A Software Defect Report and Tracking System in an intranet", Third European Conference on Software Maintenance and Reengineering, Amsterdam, The Netherlands, IEEE Computer Society, pp. 198-201, 1999. Abstract

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1998
Goulão, M., A. S. Monteiro, J. F. Martins, N. P. Ribeiro, A. B. Almeida, F. B. Abreu, and P. Sousa, II Relatório de Actividades do Protocolo Marinha Portuguesa / INESC, : DAMAG / INESC, 1998. Abstract

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Goulão, M., A. S. Monteiro, J. F. Martins, F. B. Abreu, A. B. Almeida, and P. Sousa, "A Software Evolution Experiment", European Software Control and Metrics Conference (ESCOM'98), Rome, Italy, Shakter Publishing B. V., 1998. Abstract

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1997
Goulão, M., A. S. Monteiro, N. P. Ribeiro, A. B. Almeida, F. B. Abreu, and P. Sousa, I Relatório de Actividades do Protocolo Marinha Portuguesa / INESC, : DAMAG / INESC, 1997. Abstract

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