• Publications
  • Influence
Modal-style operators in qualitative data analysis
  • I. Düntsch, G. Gediga
  • Mathematics, Computer Science
  • IEEE International Conference on Data Mining…
  • 9 December 2002
We explore the usage of the modal possibility operator (and its dual necessity operator) in qualitative data analysis, and show that it-quite literally-complements the derivation operator of formalExpand
Approximation Operators in Qualitative Data Analysis
This paper presents various forms of set approximations via the unifying concept of modal–style Operators, indicating the usefulness of this approach in qualitative data analysis. Expand
Uncertainty Measures of Rough Set Prediction
This work presents three model selection criteria, using information theoretic entropy in the spirit of the minimum description length principle, based on the principle of indifference combined with the maximum entropy principle, thus keeping external model assumptions to a minimum. Expand
A representation theorem for Boolean contact algebras
A representation theorem for Boolean contact algebras is proved which implies that the axioms for the region connection calculus (RCC) are complete for the class of subalgebra of the algeBRas of regular closed sets of weakly regular connected T1 spaces. Expand
Relation Algebras and their Application in Temporal and Spatial Reasoning
  • I. Düntsch
  • Computer Science
  • Artificial Intelligence Review
  • 1 June 2005
An introduction to relation algebras is given, and an overview of their role in qualitative temporal and spatial reasoning is given. Expand
Rough approximation quality revisited
This paper re-interpret the classical in terms of a classic measure based on sets, the Marczewski-Steinhaus metric, and also in Terms of "proportional reduction of errors" (PRE) measures. Expand
The IsoMetrics usability inventory: An operationalization of ISO 9241-10 supporting summative and formative evaluation of software systems
A questionnaire (IsoMetrics) which collects usability data for summative and formative evaluation, and a procedure to categorize and prioritize weak points, which subsequently can be used as basic input to usability reviews. Expand
Maximum Consistency of Incomplete Data via Non-Invasive Imputation
The proposed procedure is based on non-numeric rule based data analysis, and aims to maximise consistency of imputation from known values, suitable for a wide variety of data – sets, and can be used as a pre-processing step before resorting to harder numerical methods. Expand
A Logic for Rough Sets
  • I. Düntsch
  • Computer Science, Mathematics
  • Theor. Comput. Sci.
  • 1 June 1997
A logic for rough sets is presented and its algebraic semantics is presented in the spirit of Andreka and Nemeti (1994). Expand