IBERAMIA 2004 -- Checking Social Properties of Multi-agent Systems with Activity Theory -- MARCS Multi-agent Railway Control System -- Dynamic Quality Control Based on Fuzzy Agents for Multipoint Videoconferencing -- A Component and Aspect-Based Architecture for Rapid Software Agent Development -- Formalization of Cooperation in MAS: Towards a Generic Conceptual Model -- Web-Enabling MultiAgent Systems -- Gaining Competitive Advantage Through Learning Agent Models -- Towards an Efficient Rule-Based Coordination of Web Services -- Applying Rough Sets Reduction Techniques to the Construction of a Fuzzy Rule Base for Case Based Reasoning -- Dynamic Case Base Maintenance for a Case-Based Reasoning System -- A Case Base Seeding for Case-Based Planning Systems -- Handling Numeric Criteria in Relaxed Planning Graphs -- Constrainedness and Redundancy by Constraint Ordering -- To Block or Not to Block? -- Adaptive Penalty Weights When Solving Congress Timetabling -- Decomposition Approaches for a Capacitated Hub Problem -- An Efficient Method to Schedule New Trains on a Heavily Loaded Railway Network -- Studs, Seeds and Immigrants in Evolutionary Algorithms for Unrestricted Parallel Machine Scheduling -- An Investigation on Genetic Algorithms for Generic STRIPS Planning -- Improving Numerical Reasoning Capabilities of Inductive Logic Programming Systems -- Enhanced ICA Mixture Model for Unsupervised Classification -- Analysis of Galactic Spectra Using Active Instance-Based Learning and Domain Knowledge -- Adapting Evolutionary Parameters by Dynamic Filtering for Operators Inheritance Strategy -- Collaborative Filtering Based on Modal Symbolic User Profiles: Knowing You in the First Meeting -- Machine Learning by Multi-feature Extraction Using Genetic Algorithms -- Assignment of Semantic Roles Based on Word Sense Disambiguation -- Multi-session Management in Spoken Dialogue System -- Semantically-Driven Explanatory Text Mining: Beyond Keywords -- An Electronic Assistant for Poetry Writing -- Improving the Performance of a Named Entity Extractor by Applying a Stacking Scheme -- Automatic Text Summarization with Genetic Algorithm-Based Attribute Selection -- Coordination Revisited - A Constraint Handling Rule Approach -- Question Answering for Spanish Based on Lexical and Context Annotation -- A Max-SAT Solver with Lazy Data Structures -- Three Valued Logic of ?ukasiewicz for Modeling Semantics of Logic Programs -- Answer Set Programming and S4 -- A Rippling-Based Difference Reduction Technique to Automatically Prove Security Protocol Goals -- On Some Differences Between Semantics of Logic Program Updates -- Towards CNC Programming Using Haskell -- Well Founded Semantics for Logic Program Updates -- A First Order Temporal Logic for Behavior Representation -- Improved Tupling for Optimizing Multi-paradigm Declarative Programs -- Polynomial Classes of Boolean Formulas for Computing the Degree of Belief -- Combining Quality Measures to Identify Interesting Association Rules -- Two Partitional Methods for Interval-Valued Data Using Mahalanobis Distances -- A Classifier for Quantitative Feature Values Based on a Region Oriented Symbolic Approach -- The Protein Folding Problem Solved by a Fuzzy Inference System Extracted from an Artificial Neural Network -- A Multi-robot Strategy for Rapidly Searching a Polygonal Environment -- Internet-Based Teleoperation Control with Real-Time Haptic and Visual Feedback -- Representation Development and Behavior Modifiers -- New Technique to Improve Probabilistic Roadmap Methods -- A New Neural Architecture Based on ART and AVITE Models for Anticipatory Sensory-Motor Coordination in Robotics -- Development of Local Perception-Based Behaviors for a Robotic Soccer Player -- Statistical Inference in Mapping and Localization for Mobile Robots -- Fusing a Laser Range Finder and a Stereo Vision System to Detect Obstacles in 3D -- Adaptive Automata for Mapping Unknown Environments by Mobile Robots -- Digital Image Processing of Functional Magnetic Resonance Images to Identify Stereo-Sensitive Cortical Regions Using Dynamic Global Stimuli -- An Image Analysis System to Compute the Predominant Direction of Motion in a Foucault Pendulum -- A Perceptual User Interface Using Mean Shift -- Projected Fringe Technique in 3D Surface Acquisition -- Optimized Object Recognition Based on Neural Networks Via Non-uniform Sampling of Appearance-Based Models -- A Statistical Validation of Vessel Segmentation in Medical Images -- Structural Recognition with Kernelized Softassign -- Kernel Based Method for Segmentation and Modeling of Magnetic Resonance Images -- Real-Valued Pattern Recall by Associative Memory -- Binary Associative Memories Applied to Gray Level Pattern Recalling -- Selection of an Automated Morphological Gradient Threshold for Image Segmentation. Application to Vision-Based Path Planning -- Color Image Classification Through Fitting of Implicit Surfaces -- Transforming Fundamental Set of Patterns to a Canonical Form to Improve Pattern Recall -- Nonlinear System Identification Using ANFIS Based on Emotional Learning -- Improving k-NN by Using Fuzzy Similarity Functions -- Decomposing Ordinal Sums in Neural Multi-adjoint Logic Programs -- Comparing Metrics in Fuzzy Clustering for Symbolic Data on SODAS Format -- Estimating User Location in a WLAN Using Backpropagation Neural Networks -- On the Optimal Computation of Finite Field Exponentiation -- Particle Swarm Optimization in Non-stationary Environments -- An Efficient Learning Algorithm for Feedforward Neural Network -- Combining Data Reduction and Parameter Selection for Improving RBF-DDA Performance -- Bidirectional Neural Network for Clustering Problems -- Reducing the Complexity of Kernel Machines with Neural Growing Gas in Feature Space -- Multirecombined Evolutionary Algorithm Inspired in the Selfish Gene Theory to Face the Weighted Tardiness Scheduling Problem -- A Novel Approach to Function Approximation: Adaptive Multimodule Regression Networks -- A Novel Hybrid Approach of Mean Field Annealing and Genetic Algorithm for Load Balancing Problem -- Geodesic Topographic Product: An Improvement to Measure Topology Preservation of Self-Organizing Neural Networks -- A Genetic Algorithm for the Shortest Common Superstring Problem -- Improving the Efficiency of a Clustering Genetic Algorithm -- The Hopfield Associative Memory Network: Improving Performance with the Kernel "Trick" -- A Cultural Algorithm with Differential Evolution to Solve Constrained Optimization Problems -- An Approach of Student Modelling in a Learning Companion System -- A BDI Approach to Infer Student's Emotions -- Mobile Robotic Supported Collaborative Learning (MRSCL) -- Evaluation of the Teaching-Learning Process with Fuzzy Cognitive Maps -- Using Simulated Annealing for Discrete Optimal Control Systems Design -- Determination of Possible Minimal Conflict Sets Using Constraint Databases Technology and Clustering -- Implementation of a Linguistic Fuzzy Relational Neural Network for Detecting Pathologies by Infant Cry Recognition -- Adding Personality to Chatterbots Using the Persona-AIML Architecture -- DIMEx100: A New Phonetic and Speech Corpus for Mexican Spanish.