Stefan Klinger

Doctoral Student in the PhD program from 01.01.2006. to 31.12.2010.

advisors

1. Prof. Dr. Marc Scholl
2. Prof. Dr. Marcel Waldvogel

organisational data

Room	:	E 217
Tel.	:	+49 (0)7531 / 88-4449
E-mail	:	klinger (at) inf (dot) uni (dash) konstanz (dot) de send plaintext only - max size 32kB - no spam
Other Resources	:	Alternate Member Page

project description

Transfer of IR-techniques to the world of semi-structured data (XML) is an ongoing issue. Although there are many ideas about how to do IR on trees, these focus on improving IR quality, not on optimizations for speed or memory consumption.

Can IR techniques be integrated into existing XML-DBMSs?

IR-systems developed stand-alone in general do not profit from available high performance DBMSs. Currently I focus on injecting the Score Region Algebra IR technology, introduced by the CIRQUID Project (from Twente University, EWI Database Group), into the Pathfinder XQuery compiler (developed at TU München, Lehrstuhl für Datenbanksysteme).

Future issues of this research project are:

the developement of optimizations like, e.g., specialized index structures, and
the evaluation of their value and portability to other platforms.

publications

The following list of publications covers only those, which are or were published during participation at the Graduiertenkolleg / PhD program.

Conference Papers

2008 2004

2008		Hiemstra, D., Klinger, S., Flokstra, J., Apers, P., Sound ranking algorithms for XML search, Workshop on Focused Retrieval (SIGIR), Singapore, July 2008. abstract
2004		Grust, T., Klinger, S., Schema validation and type annotation for encoded trees, ACM SIGMOD/PODS 1. International Workshop on XQuery Implementation, Experience and Perspectives (XIME-P), Paris, France, June 2004. abstract

curriculum vitae

2005 - 2006	Ph.D. student of the Database Group of the University of Twente, the Netherlands.
2005	Diplom (diploma) in mathematics with main focus on computer science.

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