| 2009 | Enforcing Local Properties in Online Learning First Order TS-fuzzy Systems by Incremental Regularization. | Nils Rosemann, Werner Brockmann, Bastian Neumann |
| 2009 | A Fuzzy Approach for the Model of Sliding Window. An Application to Behaviour Patterns Mining. | Mara Ros, Miguel Delgado, Maria-Amparo Vila |
| 2009 | Production and Transportation Planning - A fuzzy Approach for Minimizing the Total Cost. | Heinrich J. Rommelfanger |
| 2009 | Chaos Induced by Turbulent and Erratic Functions. | Heriberto Romn-Flores, Yurilev Chalco-Cano, Geraldo Nunes Silva |
| 2009 | A Comparative Analysis of Symbolic Linguistic Computational Models. | Rosa M. Rodrguez, Luis Martnez-Lpez, Macarena Espinilla |
| 2009 | Distributed Genetic Tuning of Fuzzy Rule-Based Systems. | Ignacio Robles, Rafael Alcal, Jos Manuel Bentez, Francisco Herrera |
| 2009 | Poincar recurrence theorem in MV-algebras. | Beloslav Riecan |
| 2009 | Type-2 Fuzzy Trust Aggregation. | John T. Rickard, Samuel N. Hamilton, Wendy L. Hamilton |
| 2009 | Notes on Q-probabilities on intuitionistic fuzzy events. | Magdalna Rencov |
| 2009 | Consistency of Pair-wise Comparison Matrix with Fuzzy Elements. | Jaroslav Ramk |
| 2009 | Approximate Reasoning in Surgical Decisions. | Elisabeth Rakus-Andersson |
| 2009 | Sorted Kernel Matrices as Cluster Validity Indexes. | Francisco Queiroz, Antonio Braga, Witold Pedrycz |
| 2009 | Visualising Rough Time Intervals in a Two-Dimensional Space. | Yi Qiang, Katrin Asmussen, Matthias Delafontaine, Birger Stichelbaut, Guy De Tr, Philippe De Maeyer, Nico Van de Weghe |
| 2009 | On the Reliability of the Color Gradient Vector Argument Approach. | Beln Prados-Surez, Pilar Sobrevilla, Eduard Montseny, Santiago Roman |
| 2009 | Discriminatory Components for Pattern Classification. | Nick J. Pizzi, Witold Pedrycz |
| 2009 | Convergence Theorems for Generalized Random Variables and Martingales. | Andrew L. Pinchuck |
| 2009 | Associativity of Triangular Norms in Light of Web Geometry. | Milan Petrk, Peter Sarkoci |
| 2009 | Towards F-transform of a Higher Degree. | Irina Perfilieva, Martina Dankov |
| 2009 | Systems of Fuzzy Relation Equations in a Space with Fuzzy Preorder. | Irina Perfilieva |
| 2009 | Dynamic vs. Static Decision Strategies in Adversarial Reasoning. | David A. Pelta, Ronald R. Yager |
| 2009 | Preservation of Properties of Interval-Valued Fuzzy Relations. | Barbara Pekala |
| 2009 | Ant Colony Optimization for Distributed Routing Path Optimization in Optical Burst-Switched Networks. | Joo Pedro, Joo Pires, Joo Paulo Carvalho |
| 2009 | Application of Fuzzy Vectors of Normalized Weights in Decision Making Models. | Ondrej Pavlacka, Jana Talasov |
| 2009 | New Fuzzy Color Clustering Algorithm Based on hsl Similarity. | Vasile Patrascu |
| 2009 | Image Reduction with Interval-Valued Fuzzy Sets and OWA Operators. | Daniel Paternain, Humberto Bustince Sola, Jos Antonio Sanz, Mikel Galar, Carlos Guerra |