| 2009 | On the use of Measures of Separability of Classes to Characterise the Domains of Competence of a Fuzzy Rule Based Classification System. | Julin Luengo, Francisco Herrera |
| 2009 | Modeling Investor Optimism with Fuzzy Connectives. | Milan Lovric, Rui Jorge Almeida, Uzay Kaymak, Jaap Spronk |
| 2009 | Optimizing Fuzzy Flip-Flop Based Neural Networks by Bacterial Memetic Algorithm. | Rita Lovassy, Lszl T. Kczy, Lszl Gl |
| 2009 | A Hybrid Method for Soccer Video Events Retrieval Using Fuzzy Systems. | Ehsan Lotfi, Mohammad R. Akbarzadeh-Totonchi, Hamid Reza Pourreza, Mona Yaghoubi, F. Dehghan |
| 2009 | Pattern Recognition in Blur Motion Noisy Images using Fuzzy Methods for Response Integration in Ensemble Neural Networks. | Miguel Lopez, Patricia Melin, Oscar Castillo |
| 2009 | Exchanging Iterated Expectations of Random Upper Semicontinuous Functions: an application to decision theory. | Miguel Lpez-Daz, Luis J. Rodrguez-Muiz |
| 2009 | Identification of Web Information using Concept Hierarchies and On-line Updates of Concept Importance. | Zhan Li, Ronald R. Yager, Marek Z. Reformat |
| 2009 | On the Definition of Extended Norms and Co-norms to Aggregate Fuzzy Bipolar Conditions. | Ludovic Litard, Daniel Rocacher |
| 2009 | An Alternative Operationalization of Fuzzy Consideration Set. Application to Tourism. | Luisa Lucila Lazzari, Patricia Ins Mouli, Mariano Eriz |
| 2009 | Multiplicative and Implicative Importance Weighted Averaging Aggregation Operators with Accurate Andness Direction. | Henrik Legind Larsen |
| 2009 | On the Completion Mechanism Produced by the Choquet Integral on Some Decision Strategies. | Christophe Labreuche |
| 2009 | A Fuzzy-Semiotic Framework for Modeling Imprecision in the Assessment of Depression. | Mila Kwiatkowska, Krzysztof Kielan, Krzysztof Michalik |
| 2009 | Some Chaotic and Mixing Properties of Zadeh's Extension. | Jiri Kupka |
| 2009 | Fuzzy Subgroups and the Teichmller Space. | Paavo Kukkurainen |
| 2009 | Fuzzy Concept Lattice is Made by Proto-Fuzzy Concepts. | Ondrej Kridlo, Stanislav Krajci |
| 2009 | Towards Intuitive Understanding of the Cauchy Deviate Method for Processing Interval and Fuzzy Uncertainty. | Vladik Kreinovich, Hung T. Nguyen |
| 2009 | Can We Learn Algorithms from People Who Compute Fast: an indirect analysis in the presence of fuzzy descriptions. | Olga Kosheleva |
| 2009 | Early Start Can Inhibit Learning: Towards A New Explanation. | Olga Kosheleva |
| 2009 | Hierarchic Approach in the Analysis of Tomographic Eye Image. | Robert Koprowski, Zygmunt Wrbel |
| 2009 | Verbalizing Time-series Data: With an Example of Stock Price Trends. | Ichiro Kobayashi, Naoko Okumura |
| 2009 | Universal Integrals Based on Level Dependent Capacities. | Erich-Peter Klement, Anna Kolesrov, Radko Mesiar, Andrea Stupnanov |
| 2009 | Towards an Interpretation of the Connectivity Analysis in the Frame of Fuzzy Equivalence Relations for Medical Diagnoses. | Tatiana Kiseliova |
| 2009 | Multiple Negations in Fuzzy Interval Logic. | Eunjin Kim, Ladislav J. Kohout |
| 2009 | Fuzzy and PSO Based Algorithm for Driver's Behavior Modeling. | Sohrab Khanmohammadi, Mohammad Ali Tinati, Sehraneh Ghaemi, Mohammad Ali Badamchizadeh |
| 2009 | On Possibilistic Sequencing Problems with Fuzzy Parameters. | Adam Kasperski, Pawel Zielinski |