Willi Mann

Email: wmann(at)cosy.sbg.ac.at; Phone: +43 662 8044 6348

PhD topic: Similarity Joins and their applications in GIScience

Willi obtained his Master degree in Computer Science at the Paris Lodron University of Salzburg in 2010. He wrote his thesis in Martin Held's Computational Geometry Lab. He worked with libraries for "Exact Geometric Computation (EGC)", which is a solution to address the errors introduced by
floating-point arithmetic in real hardware.  Willi investigated the runtime cost and the gain on correctness by applying EGC on top of existing, mature geometric codes. He found that these codes perform correctly with floating-point arithmetic, while EGC would cause unreasonable slowdowns.

Afterwards, he worked in two interdisciplinary FP7 projects at TU Munich as a project assistant. The goal of these projects was to integrate various data sources in the life science domain.

In 2013, he joined the Database Research Group at the University of Salzburg, which is headed by Nikolaus Augsten.  His work focuses on similarity joins where he is developing techniques to address scability and performance bottlenecks. Among other applications, similarity joins are used in geocoding to deal with syntactical differences in the attributes whose values should match.

Willi is particularly interested in applications of multi-dimensional similarity joins where the domain of the attributes are strings, trees, space, and time. He is also a passionate programmer and likes to tune existing code to make it faster and scalable.