Johann Gamper
Free University of Bozen-Bolzano
Faculty of Computer Science
Dominikanerplatz 3, Room 2.15, 39100 Bozen-Bolzano, Italy
email: gamper at inf dot unibz dot it
phone: +39-0471-016140

I am associate professor at the Faculty of Computer Science of the Free University of Bozen-Bolzano (FUB). I received a M.Sc. degree in CS from the TU Vienna (1989) and a Ph.D. degree in CS from the RWTH Aachen (1996).

My research interests include data intensive systems with a particular focus on advanced database technologies for processing temporal and spatial data, data warehousing and analysis, and approximate query answering. Research methods include fundamental research, system development, and empirical evaluation. The research problems originate from various application areas, including government, tourism, health-care, and agriculture.

Research Projects

  • Temporal RDBMS: The project aims at extending RDBMs to provide support for querying temporal data. We implemented our solution in the kernel of PostgreSQL. [more]

  • DASA: The project aims at developing solutions for the analysis of time series data in agriculture, including similarity search and the imputation of missing values. [more]

  • Isochrones: The project aims at studying isochrones as a tool for reachability and catchment analysis in spatial network databases. [more]

  • Finished projects: OSTAR, AQuiST, MEDAN, eBZ, eMayor

Selected Publications (Full list, DBLP)

  1. A. Dignös, M.H. Böhlen, J. Gamper, and C.S. Jensen. Extending the kernel of a relational DBMS with comprehensive support for sequenced temporal queries. TODS 2016. Accepted for publication.
  2. A. Dignös, M.H. Böhlen, and J. Gamper. Overlap interval partition join. SIGMOD 2014.
  3. M. Khayati, M.H. Böhlen, and J. Gamper. Memory-efficient centroid decomposition for long time series. ICDE 2014.
  4. D. Taliun, J. Gamper, C. Pattaro. Efficient haplotype block recognition of very long and dense genetic sequences. BMC Bioinformatics 2014.
  5. A. Dignös, M.H. Böhlen, J. Gamper. Query time scaling of attribute values in interval timestamped databases. ICDE 2013.
  6. A. Dignös, M.H. Böhlen, J. Gamper. Temporal alignment. SIGMOD 2012.
  7. J. Gordevicius, J. Gamper, M.H. Böhlen. Parsimonious temporal aggregation. VLDB Journal 2012.
  8. N. Augsten, M. Böhlen, C. Dyreson, J. Gamper. Windowed pq-grams for approximate joins of data-centric XML. VLDB Journal 2012.
  9. I. Timko, M. Böhlen, J. Gamper. Sequenced spatiotemporal aggregation for coarse query granularities. VLDB Journal 2011. [pdf]
  10. N. Augsten, M. Böhlen, J. Gamper. The pq-gram distance between ordered labeled trees. TODS 2010. [pdf]
  11. N. Augsten, M. Böhlen, C. Dyreson, J. Gamper. Approximate joins for data centric XML. ICDE 2008.
  12. N. Augsten, M. Böhlen, J. Gamper. An incrementally maintainable index for approximate lookups in hierarchical data. VLDB 2006. [pdf]
  13. N. Augsten, M. Böhlen, J. Gamper. Approximate matching of hierarchical data using pq-grams. VLDB 2005. [pdf]

Teaching and Student Supervision

I am currently supervising the following PhD students: David Blumenthal, Theodoros Chondrogiannis, Giovanni Mahlknecht, Michael Shekelyan.

Former PhD students: Bruno Cadonna, Juozas Gordevicius, Markus Innerebner, Daniel Taliun. Co-supervision: Nikolaus Augsten, Romans Kasperovics, Judith Knapp.

At the graduate and undergraduate level, I am teaching the following courses:

Proposals for BSc/MSc theses are available here.