Yoann Pitarch, Ph.D

Welcome

Current position

I have been a postdoc researcher under the supervision of Pr. Torben Pedersen in the Center for Data-intensive Systems (DAISY group) at Aalborg University, Denmark. I am involved in the european MIRABEL project and in the Daisy Innovation project. I am working on classification and prediction approaches as well as on the design of an energy data management system.

Previously

I was a research engineer under the supervision of Pr. Maguelonne Teisseire for two months at the Maison de la Teledetection in Montpellier, France. I was in charge to design and implement a pattern-based technique to perform classification on radar data.

On May 10th, 2011, I achieved a PhD on the fields of data mining, data warehouses, databases and data streams at the LIRMM lab (Montpellier, France) within the Knowledge Discovery Research Group. My PhD was made under the supervision of Pr. Anne Laurent and Pr. Pascal Poncelet and was funded by the MIDAS ANR (French National Agency of Research) project.

During this thesis, my work addresses the problem of constructing compact cubes from multidimensional data streams and then mainly focuses on :

  • Original and new pattern mining approaches for efficiently summarize the stream ;
  • Efficient summarization technique for limiting the number of stored cuboids as well as a query extension to provide the best answer according to the summarization ;
  • A new approach for aggregating data according to the context.

Research Topics

  • (Multidimensional) Sequential Pattern Mining in Static Databases
  • Data Stream Summarization
  • Spatiotemporal Data Mining
  • Data Warehouse Design
  • Flexible Queries
  • Interaction of Multidimensional Data