Advances in Artificial Life: 5th European Conference, ECAL’99 Lausanne, Switzerland, September 13–17, 1999 Proceedings

From Fertilized Eggs to Complex Organisms: Models of Biological Pattern Formation....Pages 3-4
Fables of Cyberspace: Tapeworms, Horses, and Mountains....Pages 5-6
Cognitive Teleportation and Situated Embodiment....Pages 7-7
Testing Gaia Theory with Artificial Life....Pages 9-10
Front Matter....Pages 11-11
Testing for Emergence in Artificial Life....Pages 13-20
Are Romance Novels Really Alive? A Discussion of the Supple Adaptation View of Life....Pages 21-25
Front Matter....Pages 27-27
How Symbiosis Can Guide Evolution....Pages 29-38
Adaptability of Darwinian and Lamarckian Populations toward an Unknown New World....Pages 39-48
Requirements for Immortal ALife to Exterminate Mortal ALife in One Finite, Heterogeneous Ecosystem....Pages 49-53
Error Thresholds and Their Relation to Optimal Mutation Rates....Pages 54-63
Are Artificial Mutation Biases Unnatural?....Pages 64-73
Evolving Mutation Rates for the Self-Optimisation of Genetic Algorithms....Pages 74-78
Statistical Reasoning Strategies in the Pursuit and Evasion Domain....Pages 79-88
An Evolutionary Method Using Crossover in a Food Chain Simulation....Pages 89-93
On Self-Reproduction and Evolvability....Pages 94-103
Some Techniques for the Measurement of Complexity in Tierra....Pages 104-108
A Generic Neutral Model for Quantitative Comparison of Genotypic Evolutionary Activity....Pages 109-118
A Comparative Analysis of Biodiversity Measures....Pages 119-128
Evolution of Differentiated Expression Patterns in Digital Organisms....Pages 129-138
Species Formation in Evolving Finite State Machines....Pages 139-148
Front Matter....Pages 27-27
Genetic Code Degeneracy: Implications for Grammatical Evolution and Beyond....Pages 149-153
Coevolutionary Dynamics of a Multi-population Genetic Programming System....Pages 154-158
The Evolution of Computation in Co-evolving Demes of Non-uniform Cellular Automata for Global Synchronisation....Pages 159-169
Front Matter....Pages 171-171
Exploiting the Power of Sensory-Motor Coordination....Pages 173-182
Evolution of Neural Controllers with Adaptive Synapses and Compact Genetic Encoding....Pages 183-194
Synthetic Approaches to Neurobiology: Review and Case Study in the Control of Anguiliform Locomotion....Pages 195-204
Replicating Experiments in “Detour Behavior” with Artificially Evolved Robots: An A-Life Approach to Comparative Psychology....Pages 205-214
Studying Animals through Artificial Evolution: The Cricket Case....Pages 215-224
Evolving Behavioural Choice: An Investigation into Herrnstein’s Matching Law....Pages 225-235
Modeling of an Early Evolutionary Stage of the Cnidarian Nervous System and Behavior....Pages 236-245
Spontaneous Evolution of Command Neurons, Place Cells and Memory Mechanisms in Autonomous Agents....Pages 246-255
Modularity in Evolved Artificial Neural Networks....Pages 256-260
Framsticks: Towards a Simulation of a Nature-Like World, Creatures and Evolution....Pages 261-265
Evolving Visual Feature Detectors....Pages 266-270
Evolutionary Design of Mobile Robot Behaviors for Action-Based Environment Modeling....Pages 271-275
Front Matter....Pages 277-277
On the Dynamics of Robot Exploration Learning....Pages 279-288
Artificial Autonomy in the Natural World: Building a Robot Predator....Pages 289-293
Behaviour Adaption on Behavior-Based Controller for Brachiation Robot....Pages 294-303
Wet Artificial Brains: Towards the Chemical Control of Robot Motion by Reaction-Diffusion and Excitable Media....Pages 304-313
A Neural Structure for Learning by Imitation....Pages 314-318
Front Matter....Pages 277-277
A Neural Model for the Visual Navigation and Planning of a Mobile Robot....Pages 319-323
Progressive Construction of Compound Behavior Controllers for Autonomous Robots Using Temporal Information....Pages 324-328
A Visualization Tool for the Mini-Robot Khepera: Behavior Analysis and Optimization....Pages 329-333
Towards UAV Nap-of-the-Earth Flight Using Optical Flow....Pages 334-338
On Bots and Bacteria: Ontology Independent Embodiment....Pages 339-343
Populating the Virtual Worlds with Interactive Perceptive Virtual Actors....Pages 344-344
Level of Autonomy for Virtual Human Agents....Pages 345-349
Emotional Disorders in Autonomous Agents ?....Pages 350-354
Integrating Unsupervised Learning, Motivation and Action Selection in an A-life Agent....Pages 355-364
Can Computers Have Sentiments? The Case of Risk Aversion and Utility for Wealth....Pages 365-374
Front Matter....Pages 375-375
Towards Robust Bio-inspired Circuits: The Embryonics Approach....Pages 377-378
Designing a Simulation Model of a Self-Maintaining Cellular System....Pages 379-388
Design Patterns for an Object-Oriented Computational Chemistry....Pages 389-398
Model of Self-Replicating Cell Capable of Self-Maintenance....Pages 399-406
Evolution at the Origins of Life: Modelling Simple Persistent Replicating Objects....Pages 407-411
A Simulation of Life Using a Dynamic Core Memory Partitioned by Membrane Data....Pages 412-416
Molecular Evolution in Time-Dependent Environments....Pages 417-421
Evolution to Complexity: Replication, Elongation and Assembly in an RNA World....Pages 422-426
Evolution of Multispecificity in an Immune Network....Pages 427-431
Laziness + Sensitivity + Mobility = Structure....Pages 432-441
Front Matter....Pages 375-375
Self-Repairing Multicellular Hardware: A Reliability Analysis....Pages 442-446
Arithmetic Operations on Self-Replicating Cellular Automata....Pages 447-456
Dynamics of Gene Expression in an Artificial Genome — Implications for Biological and Artificial Ontogeny....Pages 457-466
Parameter Optimization in Hierarchical Structures....Pages 467-471
A Model of Axis Determination for the Drosophila Wing Disc....Pages 472-476
Identifying Gene Regulatory Networks from Time Series Expression Data by in silico Sampling and Screening....Pages 477-486
Front Matter....Pages 487-487
Simulating the Evolution of Artifacts....Pages 489-498
The Evolution of Non-reciprocal Altruism....Pages 499-503
A Little More than Kind and Less than Kin: The Unwarranted Use of Kin Selection in Spatial Models of Communication....Pages 504-513
An Evolutionary Simulation Model of Social Learning about Food by Norway Rats....Pages 514-523
Effects of Cohesiveness on Inter-sexual Dominance Relationships and Spatial Structure among Group-Living Virtual Entities....Pages 524-534
Simplicity Rules the Roost: Exploring Birdbrain Parental Investment Heuristics....Pages 535-544
Imitation and Cooperation in Coupled Dynamical Recognizers....Pages 545-554
Emergence of Adaptive Society with Competitive Selfish Agents....Pages 555-559
Dynamical Systems Game....Pages 560-565
High Speed Hardware Computation of Co-evolution Models....Pages 566-574
A Probabilistic Model for Understanding and Comparing Collective Aggregation Mechanisms....Pages 575-584
Exploiting Domain Physics: Using Stigmergy to Control Cluster Building with Real Robots....Pages 585-595
Adaptive Exploration of a Dynamic Environment by a Group of Communicating Robots....Pages 596-605
Task Fulfilment and Temporal Patterns of Activity in Artificial Ant Colonies....Pages 606-615
Front Matter....Pages 487-487
Formalizing the Ant Algorithms in Terms of Reinforcement Learning....Pages 616-620
Using Competing Ant Colonies to Solve k-way Partitioning Problems with Foraging and Raiding Strategies....Pages 621-625
On Improving Clustering in Numerical Databases with Artificial Ants....Pages 626-635
Front Matter....Pages 637-637
Ants War with Evolutive Pheromone Style Communication....Pages 639-643
Sexual Signalling in an Artificial Population: When Does the Handicap Principle Work?....Pages 644-653
Modeling the Evolution of Communication: From Stimulus Associations to Grounded Symbolic Associations....Pages 654-663
Emergence of Speech Sounds in Changing Populations....Pages 664-673
SPECIES: An Evolutionary Model for the Emergence of Phonetic Structures in an Artificial Society of Speech Agents....Pages 674-678
Collective Learning and Semiotic Dynamics....Pages 679-688
Analyzing the Evolution of Communication from a Dynamical System’s Perspective....Pages 689-693
Syntax out of Learning: The Cultural Evolution of Structured Communication in a Population of Induction Algorithms....Pages 694-703
Modelling the Evolution of Linguistic Diversity....Pages 704-708
Compression and Adaptation....Pages 709-719
Effective Lexicon Change in the Absence of Population Flux....Pages 720-724
Self-Organization of a Lexicon in a Structured Society of Agents....Pages 725-729
Modeling Categorization Dynamics through Conversation by Constructive Approach....Pages 730-734