Projects
Research, transfer and teaching projects
From language models as measurement instruments to decision support for critical infrastructure, and from earlier work on design research and innovation methods.
Current research & transfer
Validity in Design Science
Which evidence justifies which claim about an artefact?
Validity & Uncertainty
The ITEM Ontology
The semantic anatomy of psychometric indicators
Computational Measurement
SemanticIS
Semantic search and knowledge synthesis for Information Systems research
Knowledge Extraction · Prototype
Futures Methods for Design Science
Designing and evaluating future-oriented artefacts with experts and AI
Design Research · Futures · AI
PsyProxy
Where language becomes measurement: interpretable AI for text
Computational Measurement · Transfer
Fruitfulness in Design Science
Evaluating contributions by what they make possible
Validity & Uncertainty · Design Science
Human-centered AI Methods
Innovation methods for data- and AI-based products and business models
Innovation Methods · Data & AI
Design Knowledge & Design Science Methods
What designers know, and the methods design research uses to study it
Design Research
Information Systems Ontology
A machine-readable vocabulary of the theories, methods and topics of IS research
Knowledge Extraction
Enhancing Ontologies with LLMs
A semi-automated approach to keeping domain ontologies up to date
Knowledge Extraction · Prototype
KASKADE
Decision intelligence for cascading failures in critical infrastructure
Validity & Uncertainty · Transfer
Theory-Data Maps & Inter-Theory Relationships
Comparing causal theories and their empirical evidence, computationally
Knowledge Extraction · Theory
ALIGNS & the Nomological Network
A large language model that maps how 550,000 survey indicators relate
Computational Measurement
Causal-Claim Extraction
Machine-readable causal knowledge from the text and the figures of research articles
Knowledge Extraction
AgentSpace Berlin
Sovereign, secure and controllable agentic AI
AI & Society · Transfer
Healthcare Fraud Detection
Outlier detection in U.S. Medicaid claims data
Data Analytics · Transfer
Risk-adaptive Authentication
A patented Bayesian-network mechanism, developed with Bundesdruckerei
Validity & Uncertainty · Transfer
Earlier projects
Business Intelligence
Textbook with Hans-Joachim Lenz, Springer Vieweg (2013)
Data Analytics · Book
Lean Design Thinking
Lean Startup meets Design Thinking: two user-driven innovation strategies compared
Innovation Methods
Design Thinking at HPI
Coaching at the HPI School of Design Thinking and HPI Academy, 2010–2016
Innovation Methods
Start-up Mentoring
Distimo (app-store analytics) and Smart Pricer (dynamic pricing)
Entrepreneurship
SPEECHA
A podcast portal with geo-tagging, recommendations and social features
Entrepreneurship
EU Project PARMENIDES
Ontology-driven temporal text mining
Knowledge Extraction
Knowledge Sharing and Trading on Electronic Marketplaces
Doctoral thesis, Freie Universität Berlin, 2005 (summa cum laude)
Digital Business Models
FuzzyCalc
Planning, forecasting and auditing with fuzzy data
Validity & Uncertainty
Kreativismen
A card set of 38 idea operators for the innovation process
Innovation Methods
Semantic Dimensions
A crowdsourcing game to measure the meaning of form
Design Research