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283 results on '"Harks, Tobias"'

251. The Communication Complexity of Graphical Games on Grid Graphs

Author

Chou, Jen-Hou, Lu, Chi-Jen, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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252. A Simple Mechanism for a Budget-Constrained Buyer

Author

Cheng, Yu, Gravin, Nick, Munagala, Kamesh, Wang, Kangning, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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253. Timing Matters: Online Dynamics in Broadcast Games

Author

Chawla, Shuchi, Naor, Joseph (Seffi), Panigrahi, Debmalya, Singh, Mohit, Umboh, Seeun William, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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254. Incentives and Coordination in Bottleneck Models

Author

Babaioff, Moshe, Oren, Sigal, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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255. Revealed Preference Dimension via Matrix Sign Rank

Author

Boodaghians, Shant, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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256. Strategy-Proof Incentives for Predictions

Author

Ban, Amir, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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257. Infinite-Duration Poorman-Bidding Games

Author

Avni, Guy, Henzinger, Thomas A., Ibsen-Jensen, Rasmus, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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258. Byzantine Preferential Voting

Author

Melnyk, Darya, Wang, Yuyi, Wattenhofer, Roger, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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259. Prophet Inequalities vs. Approximating Optimum Online

Author

Niazadeh, Rad, Saberi, Amin, Shameli, Ali, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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260. Cost-Sharing Games in Real-Time Scheduling Systems

Author

Tamir, Tami, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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261. Equilibria in Routing Games with Edge Priorities

Author

Scheffler, Robert, Strehler, Martin, Vargas Koch, Laura, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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262. Optimal Mechanism Design with Risk-Loving Agents

Author

Nikolova, Evdokia, Pountourakis, Emmanouil, Yang, Ger, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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263. Robust and Approximately Stable Marriages Under Partial Information

Author

Menon, Vijay, Larson, Kate, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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264. Stable Marriage with Groups of Similar Agents

Author

Meeks, Kitty, Rastegari, Baharak, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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265. The Fair Division of Hereditary Set Systems

Author

Li, Z., Vetta, A., Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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266. Ordinal Approximation for Social Choice, Matching, and Facility Location Problems Given Candidate Positions

Author

Anshelevich, Elliot, Zhu, Wennan, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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267. Simple and Efficient Budget Feasible Mechanisms for Monotone Submodular Valuations

Author

Jalaly Khalilabadi, Pooya, Tardos, Éva, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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268. Varying the Number of Signals in Matching Markets

Author

Jagadeesan, Meena, Wei, Alexander, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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269. Social Welfare and Profit Maximization from Revealed Preferences

Author

Ji, Ziwei, Mehta, Ruta, Telgarsky, Matus, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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270. Opinion Dynamics with Limited Information

Author

Fotakis, Dimitris, Kandiros, Vardis, Kontonis, Vasilis, Skoulakis, Stratis, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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271. Combinatorial Assortment Optimization

Author

Immorlica, Nicole, Lucier, Brendan, Mao, Jieming, Syrgkanis, Vasilis, Tzamos, Christos, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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272. Learning Convex Partitions and Computing Game-Theoretic Equilibria from Best Response Queries

Author

Goldberg, Paul W., Marmolejo-Cossío, Francisco J., Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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273. Equilibrium and Inefficiency in Multi-product Cournot Games

Author

Hota, Mohit, Kapoor, Sanjiv, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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274. The Fluid Mechanics of Liquid Democracy

Author

Gölz, Paul, Kahng, Anson, Mackenzie, Simon, Procaccia, Ariel D., Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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275. Optimal Pricing for MHR Distributions

Author

Giannakopoulos, Yiannis, Zhu, Keyu, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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276. Pricing Multi-unit Markets

Author

Ezra, Tomer, Feldman, Michal, Roughgarden, Tim, Suksompong, Warut, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, Christodoulou, George, editor, and Harks, Tobias, editor

Published
2018
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277. Conclusion

Author

Graß, Emilia, Werner, Ralf, Series Editor, Harks, Tobias, Series Editor, Shikhman, Vladimir, Series Editor, and Graß, Emilia

Published
2018
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278. Introduction

Author

Spangler, Manuela, Werner, Ralf, Series Editor, Harks, Tobias, Series Editor, Shikhman, Vladimir, Series Editor, and Spangler, Manuela

Published
2018
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279. Introduction

Author

Graß, Emilia, Werner, Ralf, Series Editor, Harks, Tobias, Series Editor, Shikhman, Vladimir, Series Editor, and Graß, Emilia

Published
2018
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280. Neighborhood Technologies: Media and Mathematics of Dynamic Networks

Author

Vehlken, Sebastian and Harks, Tobias

Subjects
Urbanismus, Soziologie, Spieltheorie, Media and communication studies, Schwarmforschung, Algorithmen, Zwei Kulturen, Simulation, Digital media, Medientechnik, Modellbildung
Abstract

Neighborhood Technologies expands upon sociologist Thomas Schelling’s wellknown study of segregation in major American cities, using this classic work as the basis for a new way of researching social networks across disciplines. Up to now, research has focused on macrolevel behaviors that, together, form rigid systems of neighborhood relations. But can neighborhoods, conversely, affect larger, global dynamics? This volume introduces the concept of “neighborhood technologies” as a model for intermediate, or meso-level, research into the links between local agents and neighborhood relations. Bridging the sciences and humanities, Tobias Harks and Sebastian Vehlken have assembled a group of contributorswho are either natural scientists with an interest in interdisciplinary research or tech-savvy humanists. With insights into computer science, mathematics, sociology, media and cultural studies, theater studies, and architecture, the book will inform new research.

Published
2015

281. Ghetto Blasts:Media Histories of Neighborhood Technologies between Segregation, Cooperation, and Craziness

Author

Vehlken, Sebastian, Harks, Tobias, and Vehlken, Sebastian

Subjects
Media and communication studies, Digital media
Abstract

Media and Mathematics of Dynamic NetworksThis article gives a media-historical overview of several seminal applications of Neighborhood Technologies, (1) in Cellular Automata (CA), (2) in Swarm Intelligence (SI), and (3) in Agent-based Modeling (ABM). It does by no way attempt to be exhaustive, but rather highlights some initial and seminal media-technological contributions towards a mindset which bears neighborhood principles in its core. The text thus centers around media technologies which are based upon the phenomenon that the specific topological settings in local neighborhoods give rise to interesting emergent global patterns which develop dynamically over time and which yield novel ways of generating problem solutions: Autonomy, emergence, and distributed functioning replace preprogramming, control, and centralization. Neighborhood Technologies thus can be understood on two levels: First, as specific spatial structures which initiate non-linear processes over time and whose results often cannot be determined in advance. As an effect, they provide media interfaces which visualize the interplay between local neighborhood interactions and global effects, e.g. in Cellular Automata (CA) where the spatial layout of the media technology enables dynamic processes and at the same time visualizes them as computer graphics. And secondly, they can be perceived as engines of transdisciplinary thinking, bridging fields like mathematical modeling, computer simulation and engineering. Neighborhood Technologies moderate between disciplines e.g. by implementing findings from biology in swarm-intelligent robot collectives whose behavior then is re-applied as an experimental setting for (con-)testing supposed biological factors of collective motion in animal swarms. The central thesis of this article is that Neighborhood Technologies by way of their foundation in neighborhood interaction make the notion of space utterly dynamic and transformable, and always intriguingly connected to functions of time. By their dynamical collective formation, Neighborhood Technologies provide decisive information about complex real-world phenomena.

Published
2015
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282. Design von Mechanismen für gute Gleichgewichte

Author

Falkenhausen, Philipp Friedrich Freiherr von, Harks, Tobias, Technische Universität Berlin, Fakultät II - Mathematik und Naturwissenschaften, Möhring, Rolf H., Peis, Britta, and Freiherr von Falkenhausen, Philipp Friedrich

Subjects
ddc:500
Abstract

Diese Arbeit untersucht, wie zentrale Stellen (z.B. Gesetzgeber, Marktplatzbetreiber, Netzbetreiber) Einfluss auf die Effizienz von Gleichgewichten in Spielen nehmen können und wie Spieler in Abwesenheit von zentraler Steuerung ein Gleichgewicht finden können. Zunächst betrachten wir Auslastungsspiele, in denen Spieler Teilmengen einer Menge von Ressourcen als Strategie wählen. Wir nehmen an, dass die möglichen Strategien eines Spielers die Basis eines Matroids bilden, jeder Spieler eine individuelle Last auf alle genutzten Ressourcen ausübt, und dass es für jeden Spieler bei der Nutzung einer Ressource eine spezifische Latenz gibt. Unter der Annahme, dass die von der Last abhängigen Kosten der Ressourcen monetär und damit beliebig aufteilbar sind, untersuchen wir, wie verschiedene Kostenverteilungsprotokolle sich auf die Gleichgewichte des Spiels und deren Effizienz auswirken. Wir betrachten zwei Klassen von solchen Protokollen: einfache Protokolle garantieren die Existenz eines puren Nash Gleichgewichts und separable Protokolle haben zusätzlich die Eigenschaft, dass die Verteilung der Kosten einer Ressource ausschließlich von ihren Nutzern abhängt. Maß für die Effizienz eines Protokolls sind der Preis der Anarchie und der Preis der Stabilität, die für ein gegebenes Spiel die Kosten des teursten bzw. billigsten Gleichgewichts als Verhältnis zu den Kosten ein zentral bestimmten Optimums angeben. Wir führen optimale einfache und separable Protokolle ein, für die wir zeigen, dass der Preis der Stabilität maximal logarithmisch in der Anzahl der Spieler wächst und der Preis der Anarchie maximal linear. Zusätzlich untersuchen wir die Komplexität der Berechnung von optimalen Kostenanteilen. Mit einer Reduktion auf das HITTING SET Problem zeigen wir, dass das Problem, für eine gegebene Instanz eine optimale Kostenverteilung zu berechnen, NP-vollständig und nicht auf einen Faktor c log(n) für c

Published
2014

283. On selfish network creation

Author

Lenzner, Pascal, Albers, Susanne, Harks, Tobias, and Schäfer, Guido

Subjects
Algorithmische Spieltheorie, Eigennützige Agenten, Selfish Agents, Algorithmic Game Theory, Network Creation Games, Spieldynamiken, Approximate Equilibria, Netzwerkerzeugungsspiele, Netzwerkdesign, 004 Informatik, Network Design, Game Dynamics, 28 Informatik, Datenverarbeitung, ST 200, Approximative Gleichgewichte, ddc:004
Abstract

Untersuchungsgegenstand dieser Arbeit ist ein spieltheoretisches Modell für die dezentrale Erzeugung von Netzwerken durch eigennützige Agenten. Diese Akteure verfolgen das Ziel, ein zusammenhängendes Netzwerk aufzubauen, welches ihre individuelle Verbindungsqualität maximiert. Direktverbindungen im Netzwerk haben Kosten, weshalb die Agenten ihre Ausgaben für das Erstellen von Direktverbindungen und die damit erzielten Kommunikationskosten ausbalancieren müssen. Dieses Modell wurde vor einem Jahrzehnt von Fabrikant, Luthra, Maneva, Papadimitriou und Shenker eingeführt, um reale Netzwerke, welche aus der Interaktion von eigenützigen Parteien entstanden sind, zu verstehen. Zu solchen Netzwerken zählen das Internet und auch soziale Netzwerke. Die vorliegende Arbeit trägt zu diesem Forschungsvorhaben bei, indem die sogenannten Network Creation Games aus drei Perspektiven betrachtet werden. Die erste Sichtweise ist die Approximationsperspektive. Es wird untersucht, welche Netzwerke von sehr einfachen, in ihrer Berechnungsstärke eingeschränkten Agenten erzeugt werden und wie diese im Vergleich mit Netzwerken von Agenten, die beliebige Berechnungsstärke haben, abschneiden. Als zweite Sichtweise wird die Dynamikperspektive betrachtet. Dazu werden sequentielle Versionen des Modells definiert und anhand dieser wird explizit der Prozess der Netzwerkerzeugung untersucht. Die Hauptfragestellung ist, ob unter der natürlichen Annahme, dass Agenten stets ihre Situation verbessern wollen, der Prozess zu einem Gleichgewicht konvergiert und, falls dem so ist, wie dieser Prozess beschleunigt werden kann. Die Abhandlung wird mit der dritten Sichtweise, der Strukturperspektive, abgerundet. Es werden eine Vielfalt neuer Struktureigenschaften für verschiedene Gleichgewichtskonzepte bewiesen und neue Werkzeuge, die bei der Analyse von Gleichgewichtsnetzwerken mit hohen Direktverbindungskosten hilfreich sind, vorgestellt. The subject of study in this thesis is a game-theoretic model for decentralized network creation by selfish agents. These agents aim to create a connected network among themselves which maximizes their individual connection quality. Links in the network are costly and therefore agents try to find a trade-off between their cost spent on creating edges and their cost incurred by communicating within the network. This model was proposed a decade ago by Fabrikant, Luthra, Maneva, Papadimitriou and Shenker with the goal of understanding real networks which emerge from the interaction of selfish entities without explicit central coordination, e.g. the Internet or social networks. We contribute to this research endeavor in many ways by considering these so-called Network Creation Games from three perspectives. Our first point of view on these games is the approximation perspective. We analyze which networks are created by very simple computationally bounded selfish agents and how these networks compare to networks built by agents having unlimited computational resources. The second point of view is the dynamics perspective. We turn the model into a sequential version and focus on the process of selfish network creation. For this, we investigate whether natural dynamics like best response dynamics are guaranteed to converge to an equilibrium of the game and if so, how this convergence process may be sped up. We complete the treatment of Network Creation Games with our third point of view: the structure perspective. We provide new structural insights for several equilibrium concepts and introduce new tools which shed light on the structure of equilibrium networks for high edge-cost.

Published
2014

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