University of Nottingham
School of Computer Science
Tel.: +44 115 82 323 79
E-Mail: mail  ...
Postal: Jubilee Campus, Wollaton Road, Nottingham NG8 1BB, UK

Research Interests

My main research interests are efficient and effective machine learning and data mining algorithms. Machine learning considers the problem of extracting useful functional or probabilistic dependencies from a sample of data. Such dependencies can then, for instance, be used to predict properties of partially observed data. Data mining is often used in a broader sense and includes several different computational problems, for instance, finding regularites or patterns in data. By efficiency I mean on the one hand the classical computational complexity of decision, enumeration, etc problems but on the other hand also a satisfactory response time that allows for effectiveness. By effectiveness I mean how well an algorithm helps to solve a real world problem. My main research interests are efficient and effective machine learning and data mining algorithms. My recent focus is on challenges relevant to the constructive machine learning setting where the task is to find domain instances with desired properties and the mapping between instances and their properties is only partially accessible. This includes structured output prediction, active learning/search, online learning/optimisation, knowledge-based learning and related areas. I am most interested in cases of this setting where at least one of the involved spaces is not a Euclidean space such as the set of graphs. My approach in many cases is based on kernel methods where I have focussed originally on kernels for structured data, moved to semi-supervised/transductive learning, and am currently looking at parallel/distributed approaches as well as fast approximations. The most recent knowledge-based kernel method was for instance focussing on interactive visualisations for data exploration. Application areas which I am often considering when looking for novel machine learning challenges are chemoinformatics and computer games.

Curriculum Vitae

Since July 2015 I am a Professor of Data Science at the University of Nottingham. Before that, I have been the head of a research group jointly hosted by the University of Bonn and the Fraunhofer Institute for Intelligent Analysis and Information Systems IAIS. My group there has been funded mostly by an award from the German Research Foundation (DFG) under the Emmy Noether-Programme. I hold a PhD from the University of Bonn ('05), a MSc from the University of Bristol ('00), and a Diplom ('99) as well as a degree as a certified engineering assistant ('98) from the University of Cooperative Education in Mannheim.