University of Bedfordshire I am senior lecturer in the Department of Computer Science and Technology of the University of Bedfordshire in Luton, UK. I am working in the areas of Information Retrieval and Digital Libraries.

Until January 2011 I was member of the Information Retrieval group at the School of Computing Science of the College of Science and Engineering at the University of Glasgow. Before I was working in the Information Systems Working Group at the Faculty of Engineering of the University of Duisburg-Essen, where I did my PhD about a probabilistic, logic-based framework for information modelling and retrieval based on user annotations.

University of Glasgow In Glasgow I was working in the Renaissance project, which is concerned with developing a unified information retrieval (IR) theory based on the Quantum Theory (QT) framework to address the emerging challenges of interactive, context-sensitive and multimodal search.

Please also have a look at my CV.

Research Interests

My main research interests are Information Retrieval, Information Systems and Digital Libraries. I have been working on the following topics:

Please have a look at the overview of quantum and geometry IR literature I am maintaining.


My recent publications deal with several theoretical and practical aspects of improving interactive information access in information systems, digital libraries and digital museums. To this end I contributed in the evaluation of a quantum-inspired framework for interactive retrieval developed in the context of the Renaissance project, where we apply a subspace representation for documents and queries. In particular I focus on the question how polyrepresentation, a well established principle in the context of Ingwersen's cognitive model, can be realised in this interactive framework, which offers us a much richer formalism and representation than existing ones. Some further work explores polyrepresentation in the context of document clustering, where we are investigating if users are better off applying a cluster browsing strategy to find relevant information, rather than exploring a linear ranked list of documents, as it is offered by most contemporary search engines.

A huge part of my publications was written when I did my PhD, and is therefore mainly about how to exploit user annotations on digital objects (e.g., documents in a digital library) for information retrieval. The result of this work is a probabilistic, logic-based framework called POLAR, which is based on probablilistic Datalog and thoroughly described in my PhD thesis and many of my publications. Other publications deal with automatic categorization (also w.r.t. non-textual facets like sentiments), advisory dialogues in personal assistants and patent retrieval.

Please see the list of my publications.

I recently gave a tutorial about quantum probabilities and quantum-inspired IR at the Autum School of the German IR Specialist Group.

Quantum Probabilities and Quantum-inspired Information Retrieval from Ingo Frommholz


Projects I have been involved in:


I gained teaching experience as a course organiser, teaching assistant and lecturer on undergraduate and postgraduate level in different areas of computer science. I am co-ordinator of a newly established BSc (Hons) Data Science course/programme at the University of Bedfordshire.

At the University of Bedfordshire I am teaching:

At the University of Glasgow I taught:

At the University of Duisburg-Essen I held lectures and tutorials in the following courses:

In Duisburg I also organised seminars about Social Information Retrieval and XML Retrieval, and the "Researcher's Workbench" student project.

I organised a seminar about geometric and quantum-based information retrieval at the University of Hagen. In the past I organised seminars about the Semantic Web at Fraunhofer IPSI.

Research Related Activities

International Journal on Digital Libraries

I am managing editor of the International Journal on Digital Libraries (IJDL). If you are interested in submitting an article about digital libraries and related technologies, or information retrieval in the context of digital libraries, please proceed to our online manuscript submission page. Please don't hesitate to contact me in case you have any question regarding IJDL.


I was local organisation chair of The European Conference on Digital Libraries (ECDL 2010) held in Glasgow.

Furthermore, I have been program chair of the information retrieval workshops held at LWA 2009 (in Darmstadt, Germany), LWA 2010 (in Kassel, Germany) and LWA 2011 (in Magdeburg, Germany). This workshop series is organised by the Special Interest Group on Information Retrieval of the German Computing Society. I am also proceedings chair of the Quantum Interaction 2011 symposium in Aberdeen, Scotland. I have been PC/Senior PC member of several prestigious conferences in information retrieval and digital libraries (e.g. SIGIR, CIKM, JCDL, TPDL) and reviewer for world-class journals.

I co-organised the Information Retrieval and Foraging Autumn School held at Schloss Dagstuhl, Germany, in September 2014. I wrote a review of the school for BCS Informer. I also held a tutorial about Information Retrieval Models at that school. I am co-organising the 2nd International Workshop on Bibliometric-enhanced Information Retrieval (BIR2015) to be held at ECIR 2015.

I am treasurer and member of the steering committee of the  BCS Information Retrieval Specialist Group. I am member of the steering committee of the Special Interest Group on Information Retrieval of the German Computing Society. I am also member of the editorial board of the Datenbank Spektrum, the official journal of the German Information Retrieval resp. Database special interest groups.

Further Information and Social Media

My Duisburg-Essen Web site contains more information about my time at the University of Duisburg-Essen, in particular the projects I was involved in and the courses I taught. Some further information, including CV and publication list, can be found on several Web or social media sites:

Ingo Frommholz's bibliography View Ingo Frommholz's profile on LinkedIn Dr. Ingo Frommholz