Advances in Theory of Fuzzy Sets -- Non Contradiction, Excluded Middle, and Fuzzy Sets -- Approximate Parallelism between Fuzzy Objects: Some Definitions -- Barycentric Algebras and Gene Expression -- Fuzzy Quantification Using Restriction Levels -- Least Squares Method for L-R Fuzzy Variables -- Modeling Interpretive Steps in Fuzzy Logic Computations -- Nestings of T–Conorms -- On Coherence and Consistence in Fuzzy Answer Set Semantics for Residuated Logic Programs -- Rough Set Approach to Rule Induction from Imprecise Decision Tables -- Uninorm Based Fuzzy Network for Tree Data Structures -- Advances in Intuitionistic Fuzzy Sets -- A Note on the Conditional Expectation of IF-Observables -- A Survey on the Algebras of the So–Called Intuitionistic Fuzzy Sets (IFS) -- General Form of Probabilities on IF-Sets -- On the E-Probability on IF-Events -- Fuzzy Classification and Clustering -- Rough Ensemble Classifier: A Comparative Study -- A Fuzzy One Class Classifier for Multi Layer Model -- An Experimental Validation of Some Indexes of Fuzzy Clustering Similarity -- Combining Fuzzy C-Mean and Normalized Convolution for Cloud Detection in IR Images -- Fuzzy C-Means Inspired Free Form Deformation Technique for Registration -- Interpretability Assessment of Fuzzy Rule-Based Classifiers -- Metaclustering and Consensus Algorithms for Interactive Data Analysis and Validation -- Neuro-Fuzzy Approach for Reconstructing Fissures in Concrete’s Reinforcing Bars -- Fuzzy Image Processing and Analysis -- Fuzzy Relational Calculus and Its Application to Image Processing -- A Combined Fuzzy and Probabilistic Data Descriptor for Distributed CBIR -- A Fuzzy Approach to the Role of Symmetry in Shape Formation: The Illusion of the Scalene Triangle -- A Unified Algebraic Framework for Fuzzy Image Compression and Mathematical Morphology -- Adaptive Image Watermarking Approach Based on Kernel Clustering and HVS -- An Automatic Three-Dimensional Fuzzy Edge Detector -- Fuzzy Sets for Image Texture Modelling Based on Human Distinguishability of Coarseness -- Geometry of Spatial Bipolar Fuzzy Sets Based on Bipolar Fuzzy Numbers and Mathematical Morphology -- Interactive Image Retrieval in a Fuzzy Framework -- Modelling the Effects of Internal Textures on Symmetry Detection Using Fuzzy Operators -- Multivalued Background/Foreground Separation for Moving Object Detection -- Periodic Pattern Detection for Real-Time Application -- Fuzzy Systems -- A System for Deriving a Neuro-Fuzzy Recommendation Model -- A Type-1 Approximation of Interval Type-2 FLS -- Control of a Non-isothermal CSTR by Type-2 Fuzzy Logic Controllers -- Evaluating Fuzzy Controller Robustness Using Model Checking -- Learning Fuzzy Systems by a Co-Evolutionary Artificial-Immune-Based Algorithm -- Advanced Applications -- A Fuzzy Inference Expert System to Support the Decision of Deploying a Military Naval Unit to a Mission -- A Reasoning Methodology for CW-Based Question Answering Systems -- An Intelligent Car Driver for Safe Navigation with Fuzzy Obstacle Avoidance -- Extending Fuzzy Sets with New Evidence for Improving a Sign Language Recognition System -- General Fuzzy Answer Set Programs -- Reverse Engineering of Regulatory Relations in Gene Networks by a Probabilistic Approach -- Temporal Features in Biological Warfare.

This volume constitutes the refereed proceedings of the 8th International Workshop on Fuzzy Logic and Applications held in Palermo, Italy in June 2009. The papers are organized in topical sections on fuzzy set theory, intuitionistic fuzzy sets, fuzzy classification and clustering, fuzzy image processing and analysis, and fuzzy systems.