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Interaction Rules Supporting Effective Flocking Behavior. 支持有效成群行为的互动规则
IF 1.6 4区 计算机科学
Artificial Life Pub Date : 2024-08-01 DOI: 10.1162/artl_a_00438
Nicola Milano, Stefano Nolfi
{"title":"Interaction Rules Supporting Effective Flocking Behavior.","authors":"Nicola Milano, Stefano Nolfi","doi":"10.1162/artl_a_00438","DOIUrl":"10.1162/artl_a_00438","url":null,"abstract":"<p><p>Several simulation models have demonstrated how flocking behavior emerges from the interaction among individuals that react to the relative orientation of their neighbors based on simple rules. However, the precise nature of these rules and the relationship between the characteristics of the rules and the efficacy of the resulting collective behavior are unknown. In this article, we analyze the effect of the strength with which individuals react to the orientation of neighbors located in different sectors of their visual fields and the benefit that could be obtained by using control rules that are more elaborate than those normally used. Our results demonstrate that considering only neighbors located on the frontal side of the visual field permits an increase in the aggregation level of the swarm. Using more complex rules and/or additional sensory information does not lead to better performance.</p>","PeriodicalId":55574,"journal":{"name":"Artificial Life","volume":" ","pages":"323-336"},"PeriodicalIF":1.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141162017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Self-Organization and Phase Transitions in Driven Cellular Automata. 驱动型细胞自动机的自组织和相变
IF 1.6 4区 计算机科学
Artificial Life Pub Date : 2024-08-01 DOI: 10.1162/artl_a_00437
J Hank Rainwater
{"title":"Self-Organization and Phase Transitions in Driven Cellular Automata.","authors":"J Hank Rainwater","doi":"10.1162/artl_a_00437","DOIUrl":"10.1162/artl_a_00437","url":null,"abstract":"<p><p>The Game of Life (GoL) cellular automaton is modified to inject order during execution of the state transition algorithm by making selected stable structures permanently active while interacting with normal active sites to create novel structures. A survey of the modified automaton's phenomenology and an analysis of its dynamics are presented in the context of the physics of the self-organization of matter by viewing the GoL as an artificial chemistry. These new structures become seeds for additional phases of structure building, analogous to nature's gravitational and thermodynamic churning of the geosphere that created material structures in phases, beginning the transition from geochemistry to prebiotic chemistry and laying foundational substrates for life-enabling organizational processes in an emerging biosphere. Evidence of selective self-assembly during phase transitions is reported where several GoL still life structures, configured as permanently active seeds evolving with random collections of active sites, resulted in geometrically identical structures as the GoL reached an equilibrium state of static density.</p>","PeriodicalId":55574,"journal":{"name":"Artificial Life","volume":" ","pages":"302-322"},"PeriodicalIF":1.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141088919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Word From the Editors (Editorial 30:3). 编辑的话》（第 30:3 期社论）。
IF 1.6 4区 计算机科学
Artificial Life Pub Date : 2024-08-01 DOI: 10.1162/artl_e_00446
Alan Dorin, Susan Stepney
{"title":"A Word From the Editors (Editorial 30:3).","authors":"Alan Dorin, Susan Stepney","doi":"10.1162/artl_e_00446","DOIUrl":"https://doi.org/10.1162/artl_e_00446","url":null,"abstract":"","PeriodicalId":55574,"journal":{"name":"Artificial Life","volume":"30 3","pages":"299"},"PeriodicalIF":1.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141861768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Open-Endedness of Detecting Open-Endedness. 论检测开放性的开放性。
IF 1.6 4区 计算机科学
Artificial Life Pub Date : 2024-08-01 DOI: 10.1162/artl_a_00399
Susan Stepney, Simon Hickinbotham
{"title":"On the Open-Endedness of Detecting Open-Endedness.","authors":"Susan Stepney, Simon Hickinbotham","doi":"10.1162/artl_a_00399","DOIUrl":"10.1162/artl_a_00399","url":null,"abstract":"<p><p>We argue that attempting to quantify open-endedness misses the point: The nature of open-endedness is such that an open-ended system will eventually move outside its current model of behavior, and hence outside any measure based on that model. This presents a challenge for analyzing Artificial Life systems, leading us to conclude that the focus should be on understanding the mechanisms underlying open-endedness, not simply on attempting to quantify it. To demonstrate this, we apply several measures to eight long experimental runs of the spatial version of the Stringmol automata chemistry. These experiments were originally designed to examine the hypothesis that spatial structure provides a defense against parasites. The runs successfully show this defense, but also show a range of innovative, and possibly open-ended, behaviors involved in countering a parasitic arms race. Commencing with system-generic measures, we develop and use a variety of measures dedicated to analyzing some of these innovations. We argue that a process of analysis, starting with system-generic measures but going on to system-specific measures, will be needed wherever the phenomenon of open-endedness is involved.</p>","PeriodicalId":55574,"journal":{"name":"Artificial Life","volume":" ","pages":"390-416"},"PeriodicalIF":1.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10795363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Editorial Introduction to the 2024 Special Issue on Open-Ended Evolution. 2024 年开放式进化特刊编辑导言。
IF 1.6 4区 计算机科学
Artificial Life Pub Date : 2024-08-01 DOI: 10.1162/artl_e_00445
Alastair Channon, Mark A Bedau, Norman H Packard, Tim Taylor
{"title":"Editorial Introduction to the 2024 Special Issue on Open-Ended Evolution.","authors":"Alastair Channon, Mark A Bedau, Norman H Packard, Tim Taylor","doi":"10.1162/artl_e_00445","DOIUrl":"10.1162/artl_e_00445","url":null,"abstract":"","PeriodicalId":55574,"journal":{"name":"Artificial Life","volume":"30 3","pages":"300-301"},"PeriodicalIF":1.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141861769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kuhnian Lessons for the Study of Open-Ended Evolution. 库恩对开放式进化研究的启示。
IF 1.6 4区 计算机科学
Artificial Life Pub Date : 2024-08-01 DOI: 10.1162/artl_a_00428
Mark A Bedau
{"title":"Kuhnian Lessons for the Study of Open-Ended Evolution.","authors":"Mark A Bedau","doi":"10.1162/artl_a_00428","DOIUrl":"10.1162/artl_a_00428","url":null,"abstract":"<p><p>Kuhnian philosophy of science implies that progress in the study of open-ended evolution (OEE) would be accelerated if the OEE science community were to agree on some examples of striking success in OEE science. This article recounts the important role of scientific paradigms and scientific exemplars in creating the productivity of what Kuhn, in The Structure of Scientific Revolutions, calls \"normal\" science, and it describes how the study of OEE today would benefit from exhibiting more of the hallmarks of normal science. The article concludes by describing five proposed projects that would help create a consensus in the OEE community on some good examples of the scientific study of OEE.</p>","PeriodicalId":55574,"journal":{"name":"Artificial Life","volume":" ","pages":"337-344"},"PeriodicalIF":1.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140208298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Open-Endedness in Genelife 基因生命的开放性
IF 2.6 4区 计算机科学
Artificial Life Pub Date : 2024-04-26 DOI: 10.1162/artl_a_00426
Norman H. Packard, John S. McCaskill
{"title":"Open-Endedness in Genelife","authors":"Norman H. Packard, John S. McCaskill","doi":"10.1162/artl_a_00426","DOIUrl":"https://doi.org/10.1162/artl_a_00426","url":null,"abstract":"We explore the open-ended nature of evolution in Genelife, an evolutionary extension of Conway’s Game of Life cellular automaton in which “live” cell states are endowed at birth with a genome that affects their local dynamics and can be inherited. Both genetic sequences and locally connected spatial patterns are analyzed for novelty, keeping track of all new structures, and innovation is quantified using activity statistics. The impacts of both spatial symmetry breaking with nontotalistic rules and superimposed density regulation of the live state proliferation on the open-ended nature of the evolution are explored. Conditions are found where both genetic and spatial patterns exhibit open-ended innovation. This innovation appears to fall short of functional biological innovation, however, and potential reasons for this are discussed.","PeriodicalId":55574,"journal":{"name":"Artificial Life","volume":"60 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140806706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Procedure for Testing for Tokyo Type 1 Open-Ended Evolution 测试东京 1 型开放式演化的程序
IF 2.6 4区 计算机科学
Artificial Life Pub Date : 2024-04-18 DOI: 10.1162/artl_a_00430
Alastair Channon
{"title":"A Procedure for Testing for Tokyo Type 1 Open-Ended Evolution","authors":"Alastair Channon","doi":"10.1162/artl_a_00430","DOIUrl":"https://doi.org/10.1162/artl_a_00430","url":null,"abstract":"Tokyo Type 1 open-ended evolution (OEE) is a category of OEE that includes systems exhibiting the ongoing generation of adaptive novelty and ongoing growth in complexity. It can be considered as a necessary foundation for Tokyo Type 2 OEE (ongoing evolution of evolvability) and Tokyo Type 3 OEE (ongoing generation of major transitions). This article brings together five methods of analysis to form a procedure for testing for Tokyo Type 1 OEE. The procedure is presented as simply as possible, isolated from the complexities of any particular evolutionary system, and with a clear rationale for each step. In developing these steps, we also identify five key challenges in OEE. The last of these (achieving a higher order of complexity growth within a system exhibiting indefinitely scalable complexity) can be considered a grand challenge for Tokyo Type 1 OEE. Promising approaches to this grand challenge include also achieving one or both of Tokyo Types 2 and 3 OEE; this can be seen as one answer to why these other types of OEE are important, providing a unified view of OEE.","PeriodicalId":55574,"journal":{"name":"Artificial Life","volume":"1 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140628734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Domain-Independent Lifelong Problem Solving Through Distributed ALife Actors 通过分布式生命行动者解决领域无关的终身问题。
IF 2.6 4区 计算机科学
Artificial Life Pub Date : 2024-03-01 DOI: 10.1162/artl_a_00418
Babak Hodjat;Hormoz Shahrzad;Risto Miikkulainen
{"title":"Domain-Independent Lifelong Problem Solving Through Distributed ALife Actors","authors":"Babak Hodjat;Hormoz Shahrzad;Risto Miikkulainen","doi":"10.1162/artl_a_00418","DOIUrl":"10.1162/artl_a_00418","url":null,"abstract":"A domain-independent problem-solving system based on principles of Artificial Life is introduced. In this system, DIAS, the input and output dimensions of the domain are laid out in a spatial medium. A population of actors, each seeing only part of this medium, solves problems collectively in it. The process is independent of the domain and can be implemented through different kinds of actors. Through a set of experiments on various problem domains, DIAS is shown able to solve problems with different dimensionality and complexity, to require no hyperparameter tuning for new problems, and to exhibit lifelong learning, that is, to adapt rapidly to run-time changes in the problem domain, and to do it better than a standard, noncollective approach. DIAS therefore demonstrates a role for ALife in building scalable, general, and adaptive problem-solving systems.","PeriodicalId":55574,"journal":{"name":"Artificial Life","volume":"30 2","pages":"259-276"},"PeriodicalIF":2.6,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138479411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulating the Effect of Environmental Change on Evolving Populations 模拟环境变化对演化种群的影响
IF 2.6 4区 计算机科学
Artificial Life Pub Date : 2024-03-01 DOI: 10.1162/artl_a_00429
John A. Bullinaria
{"title":"Simulating the Effect of Environmental Change on Evolving Populations","authors":"John A. Bullinaria","doi":"10.1162/artl_a_00429","DOIUrl":"10.1162/artl_a_00429","url":null,"abstract":"This study uses evolutionary simulations to explore the strategies that emerge to enable populations to cope with random environmental changes in situations where lifetime learning approaches are not available to accommodate them. In particular, it investigates how the average magnitude of change per unit time and the persistence of the changes (and hence the resulting autocorrelation of the environmental time series) affect the change tolerances, population diversities, and extinction timescales that emerge. Although it is the change persistence (often discussed in terms of environmental noise color) that has received most attention in the recent literature, other factors, particularly the average change magnitude, interact with this and can be more important drivers of the adaptive strategies that emerge. Moreover, when running simulations, the choice of change representation and normalization can also affect the outcomes. Detailed simulations are presented that are designed to explore all these issues. They also reveal significant dependences on the associated mutation rates and the extent to which they can evolve, and they clarify how evolution often leads populations into strategies with higher risks of extinction. Overall, this study shows how modeling the effect of environmental change requires more care than may have previously been realized.","PeriodicalId":55574,"journal":{"name":"Artificial Life","volume":"30 2","pages":"147-170"},"PeriodicalIF":2.6,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140121483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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