Roni F. Banaszewski, Kelvin E. Nogueira, J. M. Simão, L. Arruda, Cesar Augusto Tacla
{"title":"An Extension to the Contract-Net Protocol Applied to the Transport Planning Problem of Oil Products","authors":"Roni F. Banaszewski, Kelvin E. Nogueira, J. M. Simão, L. Arruda, Cesar Augusto Tacla","doi":"10.1109/WESAAC.2011.28","DOIUrl":"https://doi.org/10.1109/WESAAC.2011.28","url":null,"abstract":"In supply chains of petroleum industry, maintaining a proper inventory level for multiple petroleum products is a crucial issue. Basically, this chain has several elements like producer bases, consumer bases and terminals that are linked by means of a multi-modal transport network. These elements must cooperate to achieve the global goal of the system with a minimized cost. To achieve this goal, this paper presents a multiagent protocol for simultaneous negotiations based on the Contract-Net and the application of this in the chain aforementioned. As a result, this protocol proved to be very efficient to return a feasible solution in a low processing time.","PeriodicalId":365578,"journal":{"name":"2011 Workshop and School of Agent Systems, their Environment and Applications","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115599095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Quantitative Study about Tardiness in Java-based Multi-agent Systems","authors":"Pier-Giovanni Taranti, C. Lucena, R. Choren","doi":"10.1109/WESAAC.2011.12","DOIUrl":"https://doi.org/10.1109/WESAAC.2011.12","url":null,"abstract":"Time constraints are designed as non-functional requirements which are implemented using programming language-dependent time schedulers. Multi-Agent System (MAS) applications are frequently developed using a Java-based agent platform. Thus, this Java-based MAS applications rely on native Java time schedulers. However, the Java documentation clearly states that there are no guarantees about the time accuracy during system execution. As a consequence, delays may occur at run time, and the correctness of the system execution can be compromised, which is even more critical in real-time or simulation applications. This paper presents a quantitative study on this issue, aiming to establish relationships between these delays and multi-agent paradigm abstractions. Such study is important to obtain data to indicate development solutions to mitigate problems that may arise from execution delays.","PeriodicalId":365578,"journal":{"name":"2011 Workshop and School of Agent Systems, their Environment and Applications","volume":"2007 30","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120967992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vinicius Maroni, J. Mossmann, P. R. Barros, João Marcelo L. Fonseca, Eduardo J. Zanatta, Elton Erhardt, A. Dahmer, S. Cazella, C. Flores
{"title":"SimDeCS: Architecture of a Multiagent System for Simulation of Decision Making in Health Care","authors":"Vinicius Maroni, J. Mossmann, P. R. Barros, João Marcelo L. Fonseca, Eduardo J. Zanatta, Elton Erhardt, A. Dahmer, S. Cazella, C. Flores","doi":"10.1109/WESAAC.2011.26","DOIUrl":"https://doi.org/10.1109/WESAAC.2011.26","url":null,"abstract":"This paper presents the architecture of the multiagent system SimDeCS (Intelligent Simulators for Decision Making in Health Care), describing the interaction between the agents that compose it and its practical application in the field of health education.","PeriodicalId":365578,"journal":{"name":"2011 Workshop and School of Agent Systems, their Environment and Applications","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126926794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leoanardo Andreatta de Alcantara, F. J. Esmaniotto, G. Giménez-Lugo
{"title":"Development of a Social Simulation Model for the City of Mandirituba -- Brazil -- Parana","authors":"Leoanardo Andreatta de Alcantara, F. J. Esmaniotto, G. Giménez-Lugo","doi":"10.1109/WESAAC.2011.27","DOIUrl":"https://doi.org/10.1109/WESAAC.2011.27","url":null,"abstract":"Social simulation is a powerful tool in assisting city, state and federal management oversee populational growth. This paper discusses the creation a social simulation model prototype based on software agents, taking under account the Kohl model for urban segregation, and built on Net Logo.","PeriodicalId":365578,"journal":{"name":"2011 Workshop and School of Agent Systems, their Environment and Applications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128268662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Net Logo and the Climate Change Model as a Tool for the Simulation of the Greenhouse Effect","authors":"D. B. Lima, A. C. R. Costa, N. Krusche","doi":"10.1109/WESAAC.2011.22","DOIUrl":"https://doi.org/10.1109/WESAAC.2011.22","url":null,"abstract":"This paper explores the use of modeling tool of multiagent systems called Net Logo to simulate the phenomenon of the Greenhouse Effect. Modifying an existing model called Climate Change, the paper presents the result of this adaptation of the model and the result obtained with the use of Net Logo.","PeriodicalId":365578,"journal":{"name":"2011 Workshop and School of Agent Systems, their Environment and Applications","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133586643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michael Fernando Kunzel, Andréa Konzen da Silva, Rejane Frozza, D. Bagatini, Beatriz Luz
{"title":"DIMI 3D -- Companion Agent in a Learning Virtual Environment","authors":"Michael Fernando Kunzel, Andréa Konzen da Silva, Rejane Frozza, D. Bagatini, Beatriz Luz","doi":"10.1109/WESAAC.2011.30","DOIUrl":"https://doi.org/10.1109/WESAAC.2011.30","url":null,"abstract":"Studies are being directed to one of the areas of artificial intelligence, affective computing, aiming to improve human-computer interaction. Learning process is an important activity for the humans. In affective computing, the areas as psychology and cognitive science are closed. It is possible to study how computer systems can detect, classify and respond to human emotions, making computers able to capture, recognize and transmit emotions. The recognition of emotions can occur through the voice, observable behavior, facial expressions and physiological signals. In this context, there are pedagogical agents (in learning environments), that perform functions to aid learning. These agents can be animated or not, and classified as a tutor or companion. The companion agent is a character with emotions that guide the students in the virtual environment. This work presents the development of a companion agent with emotions.","PeriodicalId":365578,"journal":{"name":"2011 Workshop and School of Agent Systems, their Environment and Applications","volume":"393 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129184473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Rodrigues, G. Dimuro, A. C. R. Costa, L. Emmendorfer
{"title":"A Multiagent System-Based Solution for Shipment Operations with Priorities in a Container Terminal","authors":"L. Rodrigues, G. Dimuro, A. C. R. Costa, L. Emmendorfer","doi":"10.1109/WESAAC.2011.13","DOIUrl":"https://doi.org/10.1109/WESAAC.2011.13","url":null,"abstract":"This paper proposes the use of a multiagent system-based solution for a proposed robotic-based automation system for the shipment operations of containers with shipment priorities in the port terminal located in Rio Grande City, Brazil. We faced with a problem of optimal policy formulation for teams of resource-limited robotic loaders in stochastic environments, which is composed of two strongly-coupled sub problems: a resource allocation problem and a policy optimization problem. The containers are required to be shared between the loaders, considering the following constraints: the containers have different weights and shipment priorities, the loaders have a maximum load that they can support during a journey, and, due to several reasons (e.g: administrative rules, maintenance schedule), the loaders are made available to the shipping operation only sequentially. We show how to combine the two problems, by formulating a policy optimization problem over the loading/unloading operations for each loader, as it becomes available. To solve the problem of container allocation to the next available loader we use a reduction of the Knapsack Problem. Then, we use Markov Decision Processes to decide on the shipment operations preformed by that loader in the terminal yard. These two processes are connected, since the container allocation process determines the states of the Markov chain that each loader actually visits. We simulated the resulting shipment operations using Net Logo.","PeriodicalId":365578,"journal":{"name":"2011 Workshop and School of Agent Systems, their Environment and Applications","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116723933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Web Searcher Agent Based on Contextual Rules and Collaboration among Agents","authors":"Daniela Maria Uez, J. L. T. Silva","doi":"10.1109/WESAAC.2011.15","DOIUrl":"https://doi.org/10.1109/WESAAC.2011.15","url":null,"abstract":"This paper presents a study to develop a Web searcher agent for semantic information retrieval on the Web. This agent uses semantic rules defined by an ontology to filter the search context. For this study a literature search was performed and the agent was developed to test the results. The literature search provides the basis to development of the agent. The agent was developed using the SemantiCore framework and Jena API. The SemantiCore framework was used to develop the agents and its interactions while the Jena API enabled the reading and manipulation of the ontology used for semantic filtering. This study concludes that searching using semantic rules defined by ontologies is a viable alternative to improve web search results.","PeriodicalId":365578,"journal":{"name":"2011 Workshop and School of Agent Systems, their Environment and Applications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125423552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cion Ayres do Nascimento, G. Giménez-Lugo, Murilo V.G. da Silva
{"title":"Qualification of Exchange Values in Social Interactions in Multiagent Systems","authors":"Cion Ayres do Nascimento, G. Giménez-Lugo, Murilo V.G. da Silva","doi":"10.1109/WESAAC.2011.7","DOIUrl":"https://doi.org/10.1109/WESAAC.2011.7","url":null,"abstract":"This paper describes a method of simbolic qualification of exchange values in social interactions in multiagent systems. The method can be used as basis of a model whose purpose is to use a simplified view of the sociological theory of Pierre Bourdieu in the qualification process of these values, thereby enabling the development of mechanisms that can provide information about trust and reputation in agents society.","PeriodicalId":365578,"journal":{"name":"2011 Workshop and School of Agent Systems, their Environment and Applications","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124032794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Coordination of Agents in the RoboCup Rescue: A Partial Global Approach","authors":"A. H. Pereira, L. G. Nardin, Jaime Simão Sichman","doi":"10.1109/WESAAC.2011.10","DOIUrl":"https://doi.org/10.1109/WESAAC.2011.10","url":null,"abstract":"Coordination is one of the key issues in cooperative multiagent systems and it also plays an essential role in disaster management. Task allocation is an important part of the coordination problem since the decomposition of the objective into tasks is the most natural way to organize work among agents. Therefore, in this paper we propose a task allocation approach that considers the existence of local and global information in order to coordinate the agents in the RoboCup Rescue. Moreover, we present a comparative analysis between the results obtained by the agents which implement our approach and the sample agents provided in the RoboCup Rescue simulator.","PeriodicalId":365578,"journal":{"name":"2011 Workshop and School of Agent Systems, their Environment and Applications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114871724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}