Regular Sessions: Artificial Immune Systems -- Comparing Energetic and Immunological Selection in Agent-Based Evolutionary Optimization -- An Immunological and an Ethically-social Approach to Security Mechanisms in a Multiagent System -- Randomized Dynamic Generation of Selected Melanocytic Skin Lesion Features -- Controlling Spam: Immunity-based Approach -- A Comparison of Clonal Selection Based Algorithms for Non-Stationary Optimisation Tasks -- Regular Sessions: Evolutionary Methods -- On Asymptotic Behaviour of a Simple Genetic xsAlgorithm -- Evolutionary Algorithm of Radial Basis Function Neural Networks and Its Application in Face Recognition -- GAVis System Supporting Visualization, Analysis and Solving Combinatorial Optimization Problems Using Evolutionary Algorithms -- Regular Sessions: Computational Linguistics -- Gazetteer Compression Technique Based on Substructure Recognition -- WFT – Context-Sensitive Speech Signal Representation -- Regular Sessions: Web Technologies -- Adaptive Document Maps -- Faster Frequent Pattern Mining from the Semantic Web -- Collective Behaviour of Cellular Automata Rules and Symmetric Key Cryptography -- Regular Sessions: Foundations of Knowledge Discovery -- Experiments on Data with Three Interpretations of Missing Attribute Values—A Rough Set Approach -- Tableau Method with Free Variables for Intuitionistic Logic -- A Similarity Measure between Tandem Duplication Trees -- Finding Optimal Decision Trees -- Attribute Number Reduction Process and Nearest Neighbor Methods in Machine Learning -- The Use of Compound Attributes inAQ Learning -- Regular Sessions: Statistical Methods in Knowledge Discovery -- Residuals for Two-Way Contingency Tables, Especially Those Computed forMultiresponces -- Visualizing Latent Structures in Grade Correspondence Cluster Analysis and Generalized Association Plots -- Converting a Naive Bayes Model into a Set of Rules -- Regular Sessions: Knowledge Discovery in Applications -- Improving Quality of Agglomerative Scheduling in Concurrent Processing of Frequent Itemset Queries -- Analysis of the Structure of Online Marketplace Graph -- Trademark Retrieval in the Presence of Occlusion -- On Allocating Limited Sampling Resources Using a Learning Automata-based Solution to the Fractional Knapsack Problem -- Learning Symbolic User Models for Intrusion Detection: A Method and Initial Results -- Multichannel Color Image Watermarking Using PCA Eigenimages -- Developing a Model Agent-based Airline Ticket Auctioning System -- Multi-Label Classification of Emotions in Music -- Wrapper Maintenance for Web-Data Extraction Based on Pages Features -- Poster Session -- Parsing Polish as a Context-Free Language -- MAP a : a Language for Modelling Conversations in Agent Environments -- Definiteness of Polish Noun Phrases Modified by Relative Clauses in the DRT Framework -- DCT Watermarking Optimization by Genetic Programming -- Searching Text Corpora with grep -- Network Traffic Analysis Using Immunological and Evolutionary Paradigms -- Event Detection in Financial Time Series by Immune-Based Approach -- Automation of Communication and Co-operation Processes in Marine Navigation -- Predictive Analysis of the pO2 Blood Gasometry Parameter Related to the Infants Respiration Insufficiency -- Application of Fuzzy Logic Theory to Geoid Height Determination -- Invited Session: Knowledge Base Systems -- On Greedy Algorithms with Weights for Construction of Partial Covers -- Minimal Templates Problem -- The Inference Processes on Clustered Rules -- Extending Decision Units Conception Using Petri Nets -- Towards Modular Representation of Knowledge Base -- Lazy Learning of Agent in Dynamic Environment -- Artificial Neural Network Resistance to Incomplete Data -- Invited Session: Applications of Artificial Immune Systems -- Generalization Regions in Hamming Negative Selection -- How Can We Simulate Something As Complex As the Immune System? -- A Parallel Immune Algorithm for Global Optimization -- Invited Session: Data Mining – Algorithms and Applications -- Data Mining Approach to Classification of Archaeological Aerial Photographs -- Hierarchical Document Clustering Using Frequent Closed Sets -- Mining Spatial Association Rules with No Distance Parameter -- Invited Session: Fundamental Tools for the Lexical and Morphosyntactic Processing of Polish -- Morfeusz — a Practical Tool for the Morphological Analysis of Polish -- Domain–Driven Automatic Spelling Correction for Mammography Reports -- Reductionistic, Tree and Rule Based Tagger for Polish.