Promoting Cooperation in Service-Oriented MAS through Social Plasticity and Incentives

[EN] In distributed environments where entities only have a partial view of the system, cooperation plays a key issue. In the case of decentralized service discovery in open service-oriented multi-agent systems, agents only know about the services they provide and their direct neighbors. Therefore, they need the cooperation of their neighbors in order to locate the required services. However, cooperation is not always present in open and distributed systems. Non-cooperative agents pursuing their own goals could refuse to forward queries from other agents to avoid the cost of this action; therefore, the efficiency of the decentralized service discovery could be seriously damaged. In this paper, we propose the combination of local structural changes and incentives in order to promote cooperation in the service discovery process. The results show that, even in scenarios where the predominant behavior is not collaborative the cooperation emerges.Work partially supported by the Spanish Ministry of Science and Innovation through grants TIN2009-13839-C03-01, CSD2007-0022 (CONSOLIDER-INGENIO 2010), FPU grant AP-2008-00601 awarded to E. del Val.Del Val Noguera, E.; Rebollo Pedruelo, M.; Botti, V. (2013). Promoting Cooperation in Service-Oriented MAS through Social Plasticity and Incentives. Journal of Systems and Software. 86(2):520-537. https://doi.org/10.1016/j.jss.2012.09.031S52053786

Incentive Mechanisms in Peer-to-Peer Networks — A Systematic Literature Review

Centralized networks inevitably exhibit single points of failure that malicious actors regularly target. Decentralized networks are more resilient if numerous participants contribute to the network’s functionality. Most decentralized networks employ incentive mechanisms to coordinate the participation and cooperation of peers and thereby ensure the functionality and security of the network. This article systematically reviews incentive mechanisms for decentralized networks and networked systems by covering 165 prior literature reviews and 178 primary research papers published between 1993 and October 2022. Of the considered sources, we analyze 11 literature reviews and 105 primary research papers in detail by categorizing and comparing the distinctive properties of the presented incentive mechanisms. The reviewed incentive mechanisms establish fairness and reward participation and cooperative behavior. We review work that substitutes central authority through independent and subjective mechanisms run in isolation at each participating peer and work that applies multiparty computation. We use monetary, reputation, and service rewards as categories to differentiate the implementations and evaluate each incentive mechanism’s data management, attack resistance, and contribution model. Further, we highlight research gaps and deficiencies in reproducibility and comparability. Finally, we summarize our assessments and provide recommendations to apply incentive mechanisms to decentralized networks that share computational resources

A formal model based on Game Theory for the analysis of cooperation in distributed service discovery

New systems can be designed, developed, and managed as societies of agents that interact with each other by o↵ering and providing services. These systems can be viewed as complex networks where nodes are bounded rational agents. In order to deal with complex goals, agents must cooperate with other agents to be able to locate the required services. The aim of this paper is to formally and empirically analyze under what circumstances cooperation emerges in decentralized search for services. We propose a repeated game model that formalizes the interactions among agents in a search process where each agent has the freedom to choose whether or not to cooperate with other agents. Agents make decisions based on the cost of their actions and the expected reward if they participate by forwarding queries in a search process that ends successfully. We propose a strategy that is based on random-walks, and we study under what conditions the strategy is a Nash Equilibrium. We performed several experiments in order to evaluate the model and the strategy and to analyze which network structures are the most appropriate for promoting cooperation

Unleashing Innovation and Entrepreneurship in Europe: People, Places and Policies. Report of a CEPS Task Force February 2017

This report sets out the elements for the design of a streamlined and future-proof policy on innovation and entrepreneurship in Europe. It is the result of a collective effort led by CEPS, which formed a Task Force on Innovation and Entrepreneurship in the EU, composed of authoritative scholars, industry experts, entrepreneurs, practitioners and representatives of EU and international institutions. The result of these deliberations is a set of policy recommendations aimed at improving the overall environment and approach for entrepreneurship and innovation in Europe and a new paradigmatic understanding of the role that innovation and entrepreneurship can and should play within the overall context of EU policy. These recommendations are based on a new, multi-dimensional approach to both innovation and entrepreneurship as social phenomena and to the policies that are meant to promote them

Legal linked data ecosystems and the rule of law

This chapter introduces the notions of meta-rule of law and socio-legal ecosystems to both foster and regulate linked democracy. It explores the way of stimulating innovative regulations and building a regulatory quadrant for the rule of law. The chapter summarises briefly (i) the notions of responsive, better and smart regulation; (ii) requirements for legal interchange languages (legal interoperability); (iii) and cognitive ecology approaches. It shows how the protections of the substantive rule of law can be embedded into the semantic languages of the web of data and reflects on the conditions that make possible their enactment and implementation as a socio-legal ecosystem. The chapter suggests in the end a reusable multi-levelled meta-model and four notions of legal validity: positive, composite, formal, and ecological

A Survey of Agent-Based Modeling Practices (January 1998 to July 2008)

In the 1990s, Agent-Based Modeling (ABM) began gaining popularity and represents a departure from the more classical simulation approaches. This departure, its recent development and its increasing application by non-traditional simulation disciplines indicates the need to continuously assess the current state of ABM and identify opportunities for improvement. To begin to satisfy this need, we surveyed and collected data from 279 articles from 92 unique publication outlets in which the authors had constructed and analyzed an agent-based model. From this large data set we establish the current practice of ABM in terms of year of publication, field of study, simulation software used, purpose of the simulation, acceptable validation criteria, validation techniques and complete description of the simulation. Based on the current practice we discuss six improvements needed to advance ABM as an analysis tool. These improvements include the development of ABM specific tools that are independent of software, the development of ABM as an independent discipline with a common language that extends across domains, the establishment of expectations for ABM that match their intended purposes, the requirement of complete descriptions of the simulation so others can independently replicate the results, the requirement that all models be completely validated and the development and application of statistical and non-statistical validation techniques specifically for ABM.Agent-Based Modeling, Survey, Current Practices, Simulation Validation, Simulation Purpose

Urban food strategies in Central and Eastern Europe: what's specific and what's at stake?

Integrating a larger set of instruments into Rural Development Programmes implied an increasing focus on monitoring and evaluation. Against the highly diversified experience with regard to implementation of policy instruments the Common Monitoring and Evaluation Framework has been set up by the EU Commission as a strategic and streamlined method of evaluating programmes’ impacts. Its indicator-based approach mainly reflects the concept of a linear, measure-based intervention logic that falls short of the true nature of RDP operation and impact capacity on rural changes. Besides the different phases of the policy process, i.e. policy design, delivery and evaluation, the regional context with its specific set of challenges and opportunities seems critical to the understanding and improvement of programme performance. In particular the role of local actors can hardly be grasped by quantitative indicators alone, but has to be addressed by assessing processes of social innovation. This shift in the evaluation focus underpins the need to take account of regional implementation specificities and processes of social innovation as decisive elements for programme performance.

La valorisation du patrimoine industriel: la participation démocratique et la gouvernance

The process of patrimonialisation as the institutionalization of a practice of social character, the result of which is the valuation of cultural heritage, results from the declaration of good of common interest for humanity by UNESCO. Understanding the heritage process, its nature, the stakeholders involved and its dynamics is essential for the sustainability of cultural heritage, since the declaration alone is not enough to guarantee its protection. The participation of civil society is not a novelty in heritage protection practices, but it is also not a priority despite being a 'sine qua non' condition for the existence of the heritage. Democratic participation is a guarantee of the right to culture and occurs through the exercise of a 'combined capacity' of the citizen, internal capacities and adequate external conditions, which allow for the enjoyment of the common good and the exercise of these functions in the social context in the three dimensions of law: participation (freedom), access and contribution. Governance assumes a role as a methodology to ensure democratic participation through the balance of powers, resources and also as a composition of interests. The efficient management of industrial heritage and the governance of new vocations in the field of public policies should propose solutions closer to the most diverse realities. The future with sustainability and quality of life based on culture is conditioned by integrated and synergistic action between cultural heritage, territory and citizens, through democratic participation supported by governance on a local scale; RÉSUMÉ: Le processus de patrimonialisation comme institutionnalisation d'une pratique à caractère social, dont le résultat est la valorisation du patrimoine culturel, résulte de la déclaration de bien d'intérêt commun pour l'humanité par l'UNESCO. La compréhension du processus patrimonial, de sa nature, des acteurs impliqués et de sa dynamique est essentielle pour la durabilité du patrimoine culturel, car la déclaration seule ne suffit pas à garantir sa protection. La participation de la société civile n'est pas une nouveauté dans les pratiques de protection du patrimoine, mais elle n'est pas non plus une priorité bien qu'elle soit une condition "sine qua non" de l'existence du patrimoine. La participation démocratique est une garantie du droit à la culture et se produit par l'exercice d'une "capacité combinée" du citoyen, des capacités internes et des conditions externes adéquates, qui permettent la jouissance du bien commun et l'exercice de ces fonctions dans le contexte social dans les trois dimensions du droit : la participation (liberté), l'accès et la contribution. La gouvernance assume un rôle de méthodologie pour assurer la participation démocratique par l'équilibre des pouvoirs, des ressources et aussi comme une composition d'intérêts. La gestion efficace du patrimoine industriel et la gouvernance de nouvelles vocations dans le domaine des politiques publiques doivent proposer des solutions plus proches des réalités les plus diverses. Un avenir où la durabilité et la qualité de vie seront fondées sur la culture est conditionné par une action intégrée et synergique entre le patrimoine culturel, le territoire et les citoyens, grâce à une participation démocratique soutenue par une gouvernance à l'échelle locale

Key Competences in Europe: Opening Doors For Lifelong Learners Across the School Curriculum and Teacher Education

The aim of the study is to provide a comparative overview of policy and practice concerning the development and implementation of key competences in the education systems of the 27 Member States of the European Union. In particular, the study assesses the implementation of the 8 key competences contained in the European Reference Framework of Key Competences in primary and secondary schools across the EU as well as the extent to which initial and in-service education and training of teachers equips them with the skills and competences necessary to deliver key competences effectively.key competences, lifelong learning, cross-curricular, competence