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Hüllermeier, E. (2003). Instance-based learning of credible label sets. In A. Günter, R. Kruse, &; B. Neumann (Eds.), In Proceedings KI-2003, 26th German Conference on Artificial Intelligence, Hamburg, Germany. Springer.

Hüllermeier, E. (2003). Regularized learning with flexible constraints. In M. R. Berthold, H. J. Lenz, E. Bradley, R. Kruse, &; C. Borgelt (Eds.), In Proceddings IDA-03, 5th International Symposium on Intelligent Data Anaysis (Vol. 2810). Springer.

Fürnkranz, J., &; Hüllermeier, E. (2003). Pairwise preference learning and ranking. In In Proceedings ECML-2003, 13 th European Conference on Machine Learning, Cavtat-Dubrovnik, Croatia. Springer.

Hüllermeier, E. (2003). Instance-based collaborative filtering with fuzzy labels. In in Proceedings EUSFLAT-2003 3th International Conference on the European Society for Fuzzy Logic and Technology, Zittlau, Germany (pp. 468–473).

Dubois, D., Hüllermeier, E., &; Prade, H. (2003). A note on quality measures for fuzzy association rules. In T. Bilgic, B. De Beats, &; O. Kaynak (Eds.), in Proceedings IFSA-03 10th International Fuzzy Systems Association World Congress, Istanbul, Turkey (Vol. 2715, pp. 648–677). Springer.

Hüllermeier, E. (2003). Inducing fuzzy concepts through extended version space learning. In T. Bilgic, B. De Beats, &; O. Kaynak (Eds.), in Proceedings IFSA-03 10th International Fuzzy Systems Association World Congress, Istanbul, Turkey (Vol. 2715, pp. 648–677). Springer.

Hüllermeier, E. (2003). Possibilistic instance-based learning. Artificial Intelligence, 148(1–2), 335–383.

De Calmès, M., Dubois, D., Hüllermeier, E., Prade, H., &; Sèdes, F. (2003). Flexibility and case-based evaluation in querying: An Illustration in an experimental setting. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 11(1), 43–66.

Dubois, D., Hüllermeier, E., &; Prade, H. (2003). On the representation of fuzzy rules in terms of crisp rules. Information Sciences, 151, 301–326.