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  • June: Rui Pereira will present a paper at the 2014 HCII conference, Greece.

  • April 10-11: Several team members participated at sapo codebits 2014, Lisbon.

  • April 9: João Saraiva gave a talk on Spreadsheets as Large Data-Centric Software Systems at the INESC TEC workshop on Big Data.

  • March 31: We ran an empirical study to evaluate the efficiency and effectiveness of MDSheet. Results will be published soon!

  • March 24: Rui Pereira and Tiago Carção visit Joost Visser in Amsterdan. They give a talk at SIG.

  • February 7: Team weekly meetings move from Friday to Tuesday's afternoons (14:30-17:00).


  • December: Jácome Cunha gave a tutorial on MDSheet in the context of the course on Source Code Analysis and Manipulation (SCAM) offered to the PhD students of the MAPi doctoral program.

  • December 20: André Silva defended his MSc thesis with title "Directed Evolution of Model-Driven Spreadssheets".

  • November 26: Meeting at Bosch Electronics in Braga. Start of our (informal) colaboration with the department of software quality.

  • October 31: Rui Pereira defended his MSc thesis with title "Querying for Model-Driven Spreadssheets".

  • September 30 - October 4: Participation at the IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC 2013). Jácome Cunha and Rui Pereira presented one paper at the main conference and one tool demo.

  • July 30: Official end of the FCT funded SSaaPP project.

  • July 8-10: Participation at the International Summer School on Domain Specific Languages, Cluj, Romania. João Saraiva, Jácome Cunha, and João Paulo Fernandes gave a tutorial on "Spreadsheet engineering". Jorge Mendes and Rui Pereira attended the school.

  • July 5: Meeting at Braga's Food Bank (Banco Alimentar) . Start of our (informal) colaboration.

  • June 24-27: Participation at the 13th International Conference on Computational Science and Applications (ICCSA 2013), Ho Chi Minh City, Vietnam. João Saraiva presented the paper "Complexity Metrics for ClassSheet Models".

  • March 6: Visit of our consultant Prof. Dr. Alberto Pardo. Short presentations by the following team members:
    • Spreadsheet Querying (Rui Pereira)
    • Spreadsheet Security (Pedro Faria)
    • Model Driven Spreadsheet Engineering (Jorge Mendes)
    • Spreadsheet Smells (Pedro Martins)
    • ClassSheet Semantics (André Silva)

  • January 28: Empirical study with our first year MSc students to evaluate the MDSheet framework.


  • October: Created Bitbucket account for collaborative development of the projects developed in the context of the project.

  • September 30 - October 4: Participation at the IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC 2012). Jácome Cunha and Jorge Mendes presented a paper at the main conference, a paper at the Graduate Consortium and a tool demo.

  • August 19-23: Participation at the SoteSola Summer School, Koblenz, Germany. Jácome Cunha and João Paulo gave a tutorial on "Model based Spreadsheet Engineering".

  • June 18-21: Participation at the 12th International Conference on Computational Science and Applications (ICCSA 2012), Salvador da Bahia, Brazil. João Saraiva presented the paper "Towards a catalog of spreadsheet smells".

  • June 2-8: Participation at the 34th International Conference on Software Engineering (ICSE 2012), Zurich, Switzerland. João Paulo and Jorge Mendes presented one paper, two posters and a workshop paper (workshop USER)!!

  • May 28: Participation at the 5th International Conference on Model Transformation ICMT 2012, Prague, Czech Republic. Jácome Cunha presented the paper "Bidirectional Transformation of Model-Driven Spreadsheets".

  • May 15: Tiago Alves defended his PhD thesis with title "Benchmark-based Software Product Quality Evaluation".

  • April 24-27: Participation at the XV Ibero-American Conference on Software Engineering(CibSE12),Buenos Aires, Argentina. Rui Maranhão presented the paper "Constraint-based Debugging of Spreadsheets".

  • April 23: Jácome Cunha and João Saraiva gave a general talk about the SSaaPP project to the MSc students (ACS specialization).

  • April 1: João Saraia gave an informal tool demo at LDTA2011 on "Evolution of Model Driven Spreadsheets".

  • March 26-30: Participation at 27th Symposium On Applied Computing (SAC 2012), Riva del Garda (Trento), Italy. Jácome Cunha presented the paper "From Relational ClassSheets to UML+OCL" at the software engineering track.

  • March 21: Jácome Cunha gave a talk at the HASLab weekly seminar on "From Relational ClassSheets to UML+OCL".

  • March 9: João Saraiva gave the invited talk at Morgan Stanley, Budapest on "Spreadsheet Engineering".

  • January 30: Empirical Study on Model-driven Spreadsheets with the MSc students (UCE: ACS)


December 30: Chistophe Peixoto and Hugo Ribeiro defended their MSc thesis.

  • A Quality Model for SpreadSheets, Christophe Peixoto, MSc thesis, Departamento de Informática, Universidade do Minho, December 2011.
  • Smells in Spreadsheets, Hugo Ribeiro, MSc thesis, Departamento de Informática, Universidade do Minho, December 2011.
November 5: A tool demo video of MDSheet: A Framework for Model-driven Spreadsheet Engineering is available here.

October 16: HaExcel: a model-based spreadsheet evolution system, HASLab talk/demo (talk given by Jácome Cunha and demo by Jorge Mendes).

September 30: Meeting at FEUP, Porto (attended by Jácome, Hugo, André, Rui and Saraiva) to discuss/prepare a possible ETAPS paper.

September 18-22: Participation at VL/HCC 2011, Pittsburgh, USA

Jácome Cunha presented the the full paper Embedding and Evolution of Spreadsheet Models in Spreadsheet Systems at VL/HCC.

Jorge Mendes presented the paper ClassSheet-driven Spreadsheet Environments at VL/HCC graduate consortium.

Jorge Mendes, Jácome Cunha and João Saraica presented a poster an gave a tool demo in a special VL/HCC night session.

September 10-15: Consultant visit - Alberto Pardo visited the group to work on the incremental evaluation of circular programs.

September 9: Local Meeting to discuss Quality of Spredsheets (attended by João Paulo Fernandes, Rui Maranhão, André Riboira, Hugo, Christophe, Jorge Mendes and João Saraiva)

Hugo presented his algorithm to infer critical cells in a spreadsheet.

Christophe presented the web application and the quality model he is defining.

André Riboira used the results of Hugo Algorithm to apply the Ochiai algorithm.

July 25: Meeting at FEUP, Porto (attended by André, Rui and Saraiva)

July 14 - July 15: Jácome Cunha end João Paulo presented the paper An Empirical Study on End-users Productivity Using Model-based Spreadsheets at EuSpRIG'11 in London, UK.

July 2 - July 9: During GTTSE + SLE 2011 we had several meetings in the context of the project:

Team meeting on Wednesday 6 (attended by Jácome, João Paulo, Maranhão, André, Christophe, Jorge, Hugo, Joost, Creissac, Carlos, and Saraiva).

Meeting with Martin Erwig on Friday 8 (Jácome, Joost, nad Saraiva).

Lunch Meeting with Arje van Deursen and Martin Erwig on Thursday 7 (Joost and Saraiva).

March 26 - April 3: Jácome Cunha and João Saraiva presented the paper Type-safe Evolution of Spreadsheets at FASE/ETAPS'11 in Saarbrunken, Germany.

March 22: SSaaPP First Workshop

March 13: Empirical study with the MSc on databases

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