Dissertations / Theses on the topic 'Agent-based information systems'
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Yu, Hui. "Keyphrase-based information sharing in multi-agent systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0025/MQ62166.pdf.
Full textMaleki-Dizaji, Saeedeh. "Evolutionary learning multi-agent based information retrieval systems." Thesis, Sheffield Hallam University, 2003. http://shura.shu.ac.uk/6856/.
Full textChen, Hong. "Modeling information quality in agent-based e-commerce systems." Thesis, University of Ottawa (Canada), 2009. http://hdl.handle.net/10393/28167.
Full textAl-Qasem, Mohammad. "An agent-based approach to handle interoperability in legacy information systems." Thesis, Keele University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287966.
Full textLi, Yuefeng, and mikewood@deakin edu au. "Modelling intelligent agents for web-based information gathering." Deakin University. School of Computing and Mathematics, 2000. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051201.151125.
Full textLi, Xin. "An Agent-based Coordination Strategy for Information Propagation in Connected Vehicle Systems." Thesis, Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4467.
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Zhu, Xiaozhou. "Agent Based Modeling for Supply Chain Management: Examining the Impact of Information Sharing." [Kent, Ohio] : Kent State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=kent1226538465.
Full textTitle from PDF t.p. (viewed April 16, 2010). Advisor: Marvin Troutt. Keywords: ABM; agent; repast; information sharing. Includes bibliographical references (p. 161-179).
Prawesh, Shankar. "Applications of Agent Based Approaches in Business: A Three Essay Dissertation." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4748.
Full textEugénio, António Luís Beja. "The information systems and technology innovation process: a study using an agent-based approach." Master's thesis, Instituto Superior de Economia e Gestão, 2007. http://hdl.handle.net/10400.5/636.
Full textUm modelo abstracto baseado em agentes é utilizado para estudar a inovação em Sistemas de Informação e em Tecnologia de Informação, no plano organizacional, utilizando uma aproximação sócio-cognitiva. A conclusão do estudo indica que o poder dos profissionais conhecedores de tecnologias de informação na decisão de adopção de uma determinada inovação varia com o nível de concordância de ideias entre eles e os decisores, ao mesmo tempo que depende da taxa de depreciação das transacções, conduzindo a uma forte flutuação de poder quando o ambiente é instável.
An abstract Agent Based Model is used to study Information Systems and Information Technology innovation on an organizational realm, using a socio-cognitive approach. Conclusion is drawn that the power of the knowledge workers in the decision to adopt an IS/IT innovation within an organization varies with the matching level of ideas between them and the top management, while being dependant of the transactions’ depreciation rate, leading to a strong fluctuation of power when the environment is unstable.
Bijani, Shahriar. "Securing open multi-agent systems governed by electronic institutions." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8268.
Full textSarkar, Arkopaul. "Semantic Agent Based Process Planning for Distributed Cloud Manufacturing." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1578585210407386.
Full textHopper, S. Andrew. "The Design and Implementation of an Intelligent Agent-Based File System." Thesis, University of North Texas, 2000. https://digital.library.unt.edu/ark:/67531/metadc2523/.
Full textBai, Wei. "Agent-based Interface Approach with Activity Theory : Human-Computer interaction in diabetic health care system." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-915.
Full textIMIS (Integrated Mobile Information System for Diabetic Healthcare) aims at providing healthcare on both stationary and mobile platform, which is based on Engström’s triangle model in Activity Theory. It focuses on the need for communication and information accessibility between care-providers and their shared patients. Based on the identified need in the target area, IMIS has decided to construct a network-based communication system to support communication and accessibility to patients’ journal. Since the system integrates various roles from the heath care organization, it is a challenge to provide a useful software program to the group members. In order to facilitate the application and enhance the Human-Computer interaction of the system, agent technology is applied to increase the flexibility factor so that the system could be self-adapted to a wider range group of users.
Besides, this thesis also introduces the approach of using social-psychology — Activity theory in HCI, and discuss the integration of these different disciplines. The Multi-agents System is applied with Gaia methodology from micro perspectives. From the macro perspective Activity theory constructs the coordination mechanism of the different agents. A prototype is applied based on the different model of our research.
Rosvall, Martin. "Information horizons in a complex world." Doctoral thesis, Umeå : Department of Physics, Umeå University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-840.
Full textCalfee, Sharif H. "Autonomous agent-based simulation of an AEGIS Cruiser combat information center performing battle air-defense commander operations." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Mar%5FCalfee.pdf.
Full textKuhn, John. "A THEORY OF COMPLEX ADAPTIVE INQUIRING ORGANIZATIONS: APPLICATION TO CONTINUOUS ASSURANCE OF CORPORATE FINANCIAL INFORMATION." Doctoral diss., University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2432.
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Lee, Ho-yin, and 李浩賢. "Integrated intelligent management platform for the built environment incorporating agent-based simulation and geographic informationsystem." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47244410.
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Nongaillard, Antoine. "An agent-based approach for distributed resource allocations." Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2009. http://tel.archives-ouvertes.fr/tel-00831365.
Full textWang, Xuguang. "Spatial Adaptive Crime Event Simulation With RA/CA/ABM Computational Laboratory." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1108526413.
Full textJia, Tao. "Geospatial Knowledge Discovery using Volunteered Geographic Information : a Complex System Perspective." Doctoral thesis, KTH, Geodesi och geoinformatik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-104783.
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Paothong, Arnut. "Dynamic Processes in Network Goods: Modeling, Analysis and Applications." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4558.
Full textMcKevitt, George G. "A Model for an Agent-Based Information System." NSUWorks, 2000. http://nsuworks.nova.edu/gscis_etd/719.
Full textOlsen, Linnéa. "Can Chatbot technologies answer work email needs? : A case study on work email needs in an accounting firm." Thesis, Karlstads universitet, Handelshögskolan (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-85013.
Full textMa, Cheng. "Agent-based Power System Protection and Information Management System of a Substation." Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507730.
Full textLi, Qian. "Evaluation of Parking Guidance Information System with Multi-agent Based Simulation." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188568.
Full textHeras, Barberá Stella María. "Case-Based Argumentation in Agent Societies." Doctoral thesis, Universitat Politècnica de València, 2011. http://hdl.handle.net/10251/12497.
Full textHeras Barberá, SM. (2011). Case-Based Argumentation in Agent Societies [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/12497
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Nasman, James M. "Deployed virtual consulting : the fusion of wearable computing, collaborative technology, augmented reality and intelligent agents to support fleet aviation maintenance /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Mar%5FNasman.pdf.
Full textThesis advisor(s): Alex Bordetsky, Gurminder Singh. Includes bibliographical references (p. 49). Also available online.
Trojan, Przemyslaw Verfasser], and Martin [Gutachter] [Wolter. "Agent-based provision of system services / Przemyslaw Trojan ; Gutachter: Martin Wolter." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2019. http://d-nb.info/1220035890/34.
Full textGöhring, Daniel. "Constraint based world modeling for multi agent systems in dynamic environments." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2009. http://dx.doi.org/10.18452/16040.
Full textMobile autonomous robotics is a very young and complex field of research. Only in recent decades have robots become able to explore, to move, navigate and to interact with their environment. Since the world is uncertain and since robots can only gain partial information about it, probabilistic navigation algorithms have become very popular whenever a robot has to localize itself or surrounding objects. Furthermore, cooperative exploration and localization approaches have become very relevant lately, as robots begin to act not just alone but in groups. Within this thesis a new approach using the concept of spatial percept-relations for cooperative environment modeling is presented and evaluated. As a second contribution, constraint based localization techniques will be introduced for having a robot or a group of robots efficiently localized and to model their environment.
Ahmadi, Achachlouei Mohammad. "Exploring the Effects of ICT on Environmental Sustainability: From Life Cycle Assessment to Complex Systems Modeling." Doctoral thesis, KTH, Miljöstrategisk analys (fms), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171443.
Full textDen ökande produktionen och konsumtionen av produkter och tjänster inom informations- och kommunikationsteknik (IKT) leder till en ökning av den globala elanvändningen samt direkta miljökonsekvenser kopplade till IKT. Men IKT har även indirekta miljömässiga effekter. Dessa kan vara positiva till exempel genom substitutions- och optimeringseffekter eller negativa genom att till exempel ge upphov till ytterligare efterfrågan på grund av effektivisering (så kallade reboundeffekter). Olika metoder kan användas för att modellera och bedöma både direkta och indirekta effekter av IKT. Syftet med denna avhandling är att undersöka metoder för modellering samt att studera miljöeffekter av IKT och elektronisk media med hjälp av livscykelanalys (LCA) och även modellering av komplexa och dynamiska system, samt simuleringsteknik, så som System Dynamics (SD) och agentbaserad (AB) modellering. Avhandlingen omfattar fem artiklar (artikel I-V). Artikel I & II beskriver resultaten från en fallstudie där miljöeffekter kopplade till en svensk tidskrift studeras med LCA. Tidskriftens version för surfplatta samt motsvarande tryckta version studeras och jämförs. Artikel III går ett steg vidare från produktnivåns LCA. Artikeln återkopplar till en SD simuleringsstudie som ursprungligen genomfördes under 2002. Simuleringsstudien gällde framtida miljöeffekter av IKT i 15 europeiska länder med tidspespektivet 2000-2020. I artikeln valideras tre scenarier från simuleringsstudien med hjälp av nya empiriska data från 2000-2012 och ett nytt scenario modelleras. Kvantitativa och kvalitativa resultat från den ursprungliga studien diskuteras. Till exempel visar artikel III att IKT har en stimulerande effekt på den totala persontrafiken genom att göra den mer kostnads- och tidseffektiv (reboundeffekt). Modelleringsmekanismen som används för att representera denna reboundeffekt diskuteras vidare i artikel IV. Artikeln belyser och diskuterar den återkopplingsslinga (feedback-loop) som används för att modellera två typer av reboundeffekter kopplade till persontrafik (direkt ekonomisk rebound och tidsrelaterad rebound) samt jämför med en tidigare studie. Artikel IV behandlar också den roll systemtänkande och modellering kan spela i konceptualisering och kommunikation av reboundeffekters dynamik. För att ytterligare undersöka systemmodelleringens och simuleringens möjligheter att representera icke-linjära komplexa och dynamiska system (exempel på sådana diskuteras i artikel III och IV), sammanställer artikel V tidigare studier som jämför SD och AB-metoder och -modeller. Studiernas mål och metod summeras och resultaten med avseende på vilka kriterier som presenteras för att välja mellan SD och AB sammanställs. Även processen för att omvandla en befintlig SD-modell till en AB-modell beskrivs. Avhandlingens slutsats är att LCA och systemmodelleringsmetoder kan vara användbara för att studera IKTs direkta effekter så väl som indirekta effekter på miljön.
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Al-Yafi, Karim. "A feature-based comparison of the centralised versus market-based decision making under lens of environment uncertainty : case of the mobile task allocation problem." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/6535.
Full textMiddleton, Victor Eaton. "Imperfect Situation Analysis: Representing the Role of Error and Uncertainty in Modeling, Simulation and Analysis." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401726956.
Full textDang, Thien Ngon. "Agentenbasierter Programmassistent zur Verwaltung von NC-Informationen in Produktionssystemen mit Kommunikationsnetzwerken." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1209564075388-09943.
Full textIn the network-based DNC systems and especially heterogeneous DNC systems data get more distributed due to the ability to store not only in the DNC Server but also in the CNC controller or CNC Terminal. This leads a challenge to the DNC software in the implementation of its basic functions. The agent-based DNC software with assistants (ADNC) is suggested to solve the above problem. Its tasks are to collect distributed NC information and transfer data safely as well as performing other extended functions, i.e. NC program generation, machine data collection, production data collection, control machines in system, etc. The present work presented the concept to develop the ADNC and its first prototype. This prototype was developed in a process using a framework of agent-based assistants, called AgentAP. It is applicable on distributed manufacturing data and had been implemented on the agent platform JADE. The module Program Assistant, one of these prototype modules, which is responsible for management, bidirectional transfer, and monitoring change of NC programs, is also discussed
Feng, Yu Yan, and Ziming Wang. "High-level Planning for Multi-agent System using a Sampling-based method." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-293839.
Full textEn viktig aspekt inom robotik är att integrera robotuppgifter med rörelseplanering, som har en ökande be- tydelse för samhället på grund av dess applikationsområde inom t.ex. transport, navigering och lagerhantering. Ett avgörande steg till detta är att få robotarna automatiskt planerar sin bana för att utföra de givna uppgifterna. I detta projekt implementerades “Multi-layered” metod för att uppnå detta. Metoden består av ett hög-nivå diskret planeringslager som är designad för planering, och ett kontinuerligt låg-nivå sökningslager som använder ”sampling-based” algoritmer för sökning av bana. Lagerna interageras med varandra under den tiden där metoden söker efter en önskvärd bana som satisfiera uppdraget. För att koordinera samtliga robotar används den frikopplat approachen där hastigheter för olika robotar justeras till att undvika kollisioner, samt olika prioriteringar tilldelas för varje robot för att undvika ett blockerat låsläge. ”Sampling-based” algoritmer och den frikopplat approachen är oftast mer effektivt tidsmässigt men garantera inte att lösning kommer att hittas även om den existerar. Syftet med detta projekt är att studera och lära sig om rörelseplanering på högt-nivå och multi-agentsystem, som en introduktion till robotik och datavetenskap.
Kandidatexjobb i elektroteknik 2020, KTH, Stockholm
Kroiß, Christian [Verfasser], and Martin [Akademischer Betreuer] Wirsing. "Simulation and statistical model-checking of logic-based multi-agent system models / Christian Kroiß ; Betreuer: Martin Wirsing." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2016. http://d-nb.info/1119073596/34.
Full textBayanifar, Hessamedin [Verfasser]. "Agent-based mechanism for smart distributed dependability and security supervision and control of Cyber-Physical Production Systems / Hessamedin Bayanifar." Magdeburg : Universitätsbibliothek, 2017. http://d-nb.info/1155237390/34.
Full textTavares, Anderson Rocha. "Uma abordagem baseada em agentes para simulação de tarifação viária e comunicação inter-veicular." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/79589.
Full textTransportation systems are complex systems composed of different interacting entities. The optimization of the existing transportation infrastructure usage, which becomes increasingly necessary given the increasing demand for mobility, requires simulation of new technologies that might be used in the future, such as inter-vehicular communication (IVC) and adaptive road pricing. This dissertation presents an agent-based approach for simulation of inter-vehicular communication and adaptive road pricing in transportation systems. Drivers are modeled as cost-minimizer agents, where the cost is composed by travel time and expenditure. Drivers can use IVC to expand their knowledge of the road network state. Among the IVC users, there might be malicious agents, which try to divert other drivers from their routes by spreading false information. The malicious agents can act in a coordinated way, by spreading false information about the routes of all the agents in the group. In the infrastructure side, link managers perceive the vehicular flow in the roads and define the prices to be applied by means of a reinforcement learning scheme. In the experiments, we employ a microscopic traffic simulation model, which allows us to observe the individual behavior of each entity in the studied transportation system. The scenario where the simulations are run is a road network with the main arterial roads of the city of Porto Alegre, Brazil. Experimental results indicate that a small group of coordinated malicious agents in IVC scenarios is able to cause significant losses to the other drivers. Although in average the group does not succeed in reducing their travel times, some agents are benefited by the coordination of the group. Regarding road pricing, experimental results indicate that the reinforcement learning scheme does not achieve the same effectiveness of a fixed pricing approach regarding the maximization of vehicular flow in the road network. Both pricing schemes are outperformed by an optimization method that assumes full knowledge of the road network state by the drivers. In the individual aspect, under pricing via reinforcement learning, drivers’ costs are higher compared to their costs under fixed pricing. The agent-based model presented in this dissertation is a contribution towards a methodology to integrate behavioral models of human travelers reacting to traffic patterns and control measures of these traffic patterns, focusing on distributed and decentralized methods.
Ahrndt, Sebastian [Verfasser], Sahin [Akademischer Betreuer] Albayrak, Sahin [Gutachter] Albayrak, Catholijn [Gutachter] Jonker, and Michael [Gutachter] Kaisers. "Modelling and integrating personality as affective phenomenon in agent-based systems / Sebastian Ahrndt ; Gutachter: Sahin Albayrak, Catholijn Jonker, Michael Kaisers ; Betreuer: Sahin Albayrak." Berlin : Technische Universität Berlin, 2019. http://d-nb.info/1186786000/34.
Full textKhuda, Bukhsh Wasiur Rahman [Verfasser], Heinz [Akademischer Betreuer] Koeppl, Ralf [Akademischer Betreuer] Steinmetz, and Frank [Akademischer Betreuer] Aurzada. "Model reductions for queueing and agent-based systems with applications in communication networks / Wasiur Rahman Khuda Bukhsh ; Heinz Koeppl, Ralf Steinmetz, Frank Aurzada." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2018. http://d-nb.info/1163728799/34.
Full textLundberg, Edvin. "Collaboration in Multi-agent Games : Synthesis of Finite-state Strategies in Games of Imperfect Information." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209917.
Full textVi studerar spel där ett lag agenter behöver samarbeta mot en motståndare för att uppnå ett mål. Agenterna agerar samtidigt, och vid varje steg av spelet så har de olika uppfattning om spelets tillstånd. De antas inte kunna kommunicera under spelets gång, så agenterna kan bara agera utifrån sina egna erfarenheter. Innan spelet börjar kan agenterna dock komma överrens om en strategi. En sådan strategi är vinnande om den garanterar att agenterna når sitt mål oavsett hur motståndaren beter sig. Att hitta en vinnande strategi är känt som syntesproblemet. I den här avhandlingen behandlar vi endast ett enkelt mål där agenterna måste tvinga in spelet i ett givet tillstånd. Mycket av litteraturen handlar om strategier där agenterna antingen antas (a) kunna minnas allt som de upplevt eller (b) bara kunna minnas det senaste de upplevt. Syntesproblemet är (i det generella fallet) oavgörbart i (a) och tar exponentiell tid i (b). Vi är intressede av fallet där agenter kan ha ändligt minne. De ska kunna ha en ändlig automat, som de kan uppdatera när de får nya observationer. I vårt fall så representerar det interna tillståndet agentens kunskap om spelets tillstånd. En agent kan då uppdatera sin kunskap och agera utifrån den. Vi föreslår en algoritm som konstruerar en ändlig automat åt varje agent, samt instruktioner för vad agenten ska göra i varje internt tillstånd. Varje vinnande strategi kan inte hittas av algoritmen, men vi är övertygade om att de som hittas är giltiga. En viktig byggsten är den kunskapsbaserade delmängskonstruktionen (KBSC), som vi generaliserar till spel med flera agenter. Med vår konstruktion kan spelet reduceras till ett annat spel som har mindre eller lika mycket osäkerhet. Detta kan göras godtyckligt många gånger, men det verkar som om att ingen ny kunskap tillkommer efter bara några gånger. Vi diskuterar detta vidare tillsammans med andra intressanta egenskaper hos algoritmen i de sista kapitlen i avhandlingen.
Misslin, Renaud. "Modélisation de l'environnement d'un moustique vecteur de maladies : l'exemple d'Aedes aegypti à Delhi (Inde) et Bangkok (Thaïlande)." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMR031/document.
Full textAedes aegypti is the main vector of dengue and Zika virus. Surveillance and vector control are frontline weapons in the battle against arboviruses transmitted by this mosquito. In this framework, the following thesis introduces a conceptual model (MODE) which can be used to recreate in silico the dynamical environment of Aedes aegypti at scales that match the ones at which vector control campaigns are organised (city scale - MODE-macro) and performed (neighbourhood scale - MODE-micro). The environment thus generated can be integrated with an agent-based model to simulate dengue or Zika complex pathogenic systems (environment - vector - host - virus) and can be used to map the environmental hazard of the vectorial risk in a city. The conceptual model MODE is based on a phenomenological approach that is transferable in time and space : it can be applied in different urban contexts, at different periods of time and at different scales. In order to ensure their spatio-temporal genericity, the computer models MODE-micro (neighbourhood scale) and MODE-macro (city scale) have been implemented for the purpose of generating dynamical environments using open or easily accessible data. In this thesis, MODE's potentials were assessed in Delhi (India), and Bangkok (Thailand).Knowledge resulting from the study of the dynamic, multifactorial and non-linear relationships between the environment and the vector should lead to the improvement of vector surveillance and control strategies
Wendler, Jan. "Automatisches Modellieren von Agenten-Verhalten." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2003. http://dx.doi.org/10.18452/15008.
Full textIn multi-agent-systems agents cooperate and compete to reach their personal goals. For optimized agent interactions it is helpful for an agent to have knowledge about the current and future behavior of other agents. Ideally the recognition and prediction of behavior should be done automatically. This work addresses a way of automatically classifying and an attempt at predicting the behavior of a team of agents, based on external observation only. A set of conditions is used to distinguish behaviors and to partition the resulting behavior space. From observed behavior, team specific behavior models are then generated using Case Based Reasoning. These models, which are derived from a number of virtual soccer games (RoboCup), are used to predict the behavior of a team during a new game. The main contribution of this work is the design, realization and evaluation of an automatic behavior modeling approach for complex multi-agent systems.
Brunetti, Pietro. "Eco-sistemi informatici, distribuiti, real-time, a supporto del lavoro cooperativo in scenari di emergenza: Studio e realizzazione di un caso applicativo." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7886/.
Full textLe, Guillou Fanny. "Approche systémique de la haie, pour passer de sa multifonctionnalité à la conception de plans de gestion." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMC003.
Full textHedgerow, across its many functions, takes action in the problems generated by the current climate change. However, the radical agricultural landscape evolution during the 20th century led to massive removal of hedgerows in the past 60 years. Although its economic, ecological and socio-cultural interests are proved, they are not recognised by all the actors and the hedgerow density keep decreasing. The consequences of this disappearance gradually raise awareness of the need to preserve hedgerows. Some initiatives appears at various scales with an increasing demand for diagnostic tools and qualitative evaluation. Yet, the territorial cohesion is missing and there is a lack of data to precisely characterise the hedge.Our research gets on with the systemic study of roles and functions of hedgerow and its place in space on the bas-normand territory from a multi-scale approach in order to understand the reasons of deterioration still at work and suggest solutions. This study aims to propose tools to characterise the hedge, so as to integrate a systemic vision of the services in order to develop multifunctional management plans that can be spatially transposed. Three complementary approaches lead to this tool. The first purpose of this work is to realise a systemic model from a substantial, multidisciplinary and very fragmented bibliography. Then, a quantitative approach has been set up to characterise the evolution and functionality of the hedgerows, estimate production capacities and analyse the spatial organisation of hedgerow networks. In a third step, a qualitative approach is carried out to collect the actor perception (populations and managers) and to better understand the place of hedges in the current rural landscape. Finally, the results of these approaches have been used to develop the Ger'haies model, an agent-based model intended to be used as a mediation tool for the establishment of PGMH on a municipal territory
Aguado, Sarrió Guillem. "MAS-based affective state analysis for user guiding in on-line social environments." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/164902.
Full text[CA] Recentment, hi ha una forta i creixent influència d'aplicacions en línia en el nostre dia a dia, i concretament les xarxes socials es compten entre les plataformes en línia més utilitzades, que permeten a usuaris comunicar-se i interactuar des de diferents parts del món cada dia. Donat que aquestes interaccions comporten diferents riscos, i a més els adolescents tenen característiques que els fan més vulnerables a certs riscos, seria desitjable que el sistema poguera guiar als usuaris mentre es troben interactuant en línia, per així poder mitigar la probabilitat de caure en un d'aquests riscos. Açò comporta una experiència en línia més segura i satisfactòria per a usuaris d'aquest tipus de plataformes. L'interés en aplicacions d'intel·ligència artificial capaces de realitzar anàlisi de sentiments ha crescut recentment. Els usos de la detecció automàtica de sentiments en usuaris en plataformes en línia són variats i útils. Es poden utilitzar polaritats de sentiment per a realitzar mineria d'opinions en persones o productes, i així descobrir les inclinacions i opinions d'usuaris sobre certs productes (o certes característiques d'ells), per a ajudar en campanyes de màrqueting, i també opinions sobre persones com polítics, per a descobrir la intenció de vot en un període electoral, per exemple. En aquesta tesi, es presenta un Sistema Multi-Agent (SMA), que integra agents que implementen diferents anàlisis de sentiments i d'estrés utilitzant text i dinàmica d'escriptura (utilitzant anàlisi unimodal i multimodal), i utilitza la resposta dels analitzadors per a generar retroalimentació per als usuaris i potencialment evitar que caiguen en riscos i difonguen comentaris en plataformes socials en línia que pogueren difondre polaritats de sentiment negatives o nivells alts d'estrés. El SMA implementa una anàlisi en paral·lel de diferents tipus de dades i generació de retroalimentació a través de l'ús de dos mecanismes diferents. El primer mecanisme es tracta d'un agent que realitza generació de retroalimentació i guia d'usuaris basant-se en un conjunt de regles i l'eixida dels analitzadors. El segon mecanisme és un mòdul de Raonament Basat en Casos (CBR) que utilitza no solament l'eixida dels analitzadors en els missatges de l'usuari per a predir si la seua interacció pot generar una futura repercussió negativa, sinó també informació de context d'interaccions d'usuaris, com són els tòpics sobre els quals es parla o informació sobre prediccions prèvies en missatges escrits per la gent que forma part de l'audiència de l'usuari. S'han realitzat experiments amb dades d'una xarxa social privada generada al laboratori amb gent real utilitzant el sistema implementat en temps real, i també amb dades de Twitter.com per a descobrir quina és l'eficàcia dels diferents analitzadors implementats i del mòdul CBR en detectar estats de l'usuari que es propaguen més a la xarxa social. Açò comporta descobrir quina de les tècniques millor pot prevenir riscos potencials que els usuaris poden sofrir quan interactuen, i en quins casos. S'han trobat diferències estadísticament significatives i la versió final del SMA incorpora els analitzadors que millors resultats obtingueren, un agent assessor o guia basat en regles i un mòdul CBR. El treball d'aquesta tesi pretén ajudar a futurs dissenyadors de sistemes intel·ligents a crear sistemes que puguen detectar l'estat dels usuaris interactuant en llocs en línia i prevenir riscos que els usuaris poguessen enfrontar. Açò propiciaria una experiència d'usuari més segura i satisfactòria.
[EN] In the present days, there is a strong and growing influence of on-line applications in our daily lives, and concretely Social Network Sites (SNSs) are one of the most used on-line social platforms that allow users to communicate and interact from different parts of the world every day. Since this interaction poses several risks, and also teenagers have characteristics that make them more vulnerable to certain risks, it is desirable that the system could be able to guide users when interacting on-line, to try and mitigate the probability of incurring one of those risks. This would in the end lead to a more satisfactory and safe experience for the users of such on-line platforms. Recently, interest in artificial intelligence applications being able to perform sentiment analysis has risen. The uses of detecting the sentiment of users in on-line platforms or sites are variated and rewarding. Sentiment polarities can be used to perform opinion mining on people or products, and discover the inclinations and opinions of users on certain products (or certain features of them) to help marketing campaigns, and also on people such as politics, to discover the voting intention for example in electoral periods. In this thesis, a Multi-Agent System (MAS) is presented, which integrates agents that perform different sentiment and stress analyses using text and keystroke dynamics data (using both unimodal and multi-modal analysis). The MAS uses the output of the analyzers for generating feedback for users and potentially avoids them from incurring risks and spreading comments in on-line social platforms that could lead to the spread of negative sentiment or high-stress levels. Moreover, the MAS incorporates parallelized analyses of different data types and feedback generation via the use of two different mechanisms. On the one hand, a rule-based advisor agent has been implemented, that generates feedback or guiding for users based on the output of the analyzers and a set of rules. On the other hand, a Case-Based Reasoning (CBR) module that uses not only the output of the different analyzers on the messages of the user interacting, but also context information from user interactions such as the topics being talked about or information about the previous states detected on messages written by people in the audience of the user. Experiments with data from a private SNS generated in a laboratory with real people using the system in real-time, and also with data from Twitter.com have been performed to ascertain the efficacy of the different analyzers implemented and the CBR module on detecting states of the user that propagate more in the network, which leads to discovering which of the techniques is able to better prevent potential risks that users could face when interacting, and in which cases. Significant differences were found and the final version of the MAS incorporates the best-performing analyzer agents, a rule-based advisor agent, and a CBR module. In the end, this thesis aims to help intelligent systems developers to build systems that are able to detect the state of users interacting in on-line sites and prevent risks that they could face, leading to a more satisfactory and safe user experience.
This thesis was funded by the following research projects: Privacy in Social Educational Environments during Child-hood and Adolescence (PESEDIA), Ministerio de Economia y Empresa (TIN2014-55206-R) and Intelligent Agents for Privacy Advice in Social Networks (AI4PRI), Ministerio de Economia y Empresa (TIN2017-89156-R)
Aguado Sarrió, G. (2021). MAS-based affective state analysis for user guiding in on-line social environments [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/164902
TESIS
Tröger, Ralph. "Supply Chain Event Management – Bedarf, Systemarchitektur und Nutzen aus Perspektive fokaler Unternehmen der Modeindustrie." Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-155014.
Full textJiao, Yu. "Mobile agent-based energy-efficient and secure global information systems." 2005. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-889/index.html.
Full textLin, Ya-Tai, and 林亞泰. "A Methodology of An Agent-Based Virtual Enterprise Information Systems Integration." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/79130791468199449252.
Full text朝陽科技大學
資訊管理系碩士班
90
Virtual Enterprise (VE) is a customer-oriented flexible organization which collaborates member companies’ core competence, by using information technology and computer networks to dynamically link the distributed resources. With such a flexible and cooperative organizational structure, companies can share the resources and risks to gain competitiveness with quick response to market change and industry needs. The challenge for constructing a VE is that members ought to agilely and flexibly develop a collaborative operating environment, and all the associated inter-company workflows and integration technology. This research proposes an agent-based information systems integration infrastructure for a VE, by taking advantage of the agent’s capabilities of communication, collaboration, and mobility. A workflow modeling method was also developed for dynamic change and ease of maintenance. A dispatched mobile agent carries out access/retrieval or file processing tasks at distributed hosts according to the workflow assigned to it. The workflows, which are modeled using object-oriented technology, in the database can be retrieved via an algorithm that further intelligently assigns tasks to multiple agents concurrently to reduce the workflow total time span. In addition, data mining technique is employed to generate the dispatching rules from genetic algorithm solutions for dynamic scheduling in accordance with the characteristics of an agent-based system. A prototype system has been implemented on a variety of operating systems to demonstrate the applicability of the proposed agent-based integration infrastructure for a VE to accomplish the goals of satisfying various customers’ needs and agile manufacturing.
Passos, Lúcio Sanchez. "Spectrum-Based Fault Diagnosis in Multi-Agent Systems." Tese, 2015. https://repositorio-aberto.up.pt/handle/10216/81978.
Full textPassos, Lúcio Sanchez. "Spectrum-Based Fault Diagnosis in Multi-Agent Systems." Doctoral thesis, 2015. https://repositorio-aberto.up.pt/handle/10216/81978.
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