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Julian Berger

dblp:276/6476 · DBLP profile ↗
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4ranked-venue papers
3as first author
4since 2021 · last 2025
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 3 · 2 first-author · 3 since 2021Applied, interdisciplinary, general and emerging computing · 2 · 1 first-author · 2 since 2021Graphics, computer vision, multimedia, augmented reality and games · 1 · 1 first-author · 1 since 2021Theory of computation · 1 · 1 first-author · 1 since 2021

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Theoretical computer science
1 paper
Algorithmic game theory and mechanism design · 67% Graph algorithms and graph theory · 33%
Computer networks
1 paper
Routing and switching · 100%

Topics — the 5 heaviest of 5, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Algorithmic game theory and mechanism design › solution concepts in games › equilibrium concepts
approximate equilibrium
0.912025
Strategic Network Creation for Enabling Greedy Routing · AAAI 2025
Graph algorithms and graph theory › graph algorithms › routing
greedy routing
0.912025
Strategic Network Creation for Enabling Greedy Routing · AAAI 2025
Algorithmic game theory and mechanism design › network games
network creation games
0.912025
Strategic Network Creation for Enabling Greedy Routing · AAAI 2025
Routing and switching
geographic routing
0.312025
Strategic Network Creation for Enabling Greedy Routing · AAAI 2025
Routing and switching › geographic routing
greedy routing
0.312025
Strategic Network Creation for Enabling Greedy Routing · AAAI 2025

Methods — techniques the papers use, named apart from their topics

metric embedding · 1.7game theory · 1.7
YearPublicationVenuePosition
2025 Strategic Network Creation for Enabling Greedy Routing
abstract
Today we rely on networks that are created and maintained by smart devices. For such networks, there is no governing central authority but instead the network structure is shaped by the decisions of selfish intelligent agents. A key property of such communication networks is that they should be easy to navigate for routing data. For this, a common approach is greedy routing, where every device simply routes data to a neighbor that is closer to the respective destination. Networks of intelligent agents can be analyzed via a game-theoretic approach and in the last decades many variants of network creation games have been proposed and analyzed. In this paper we present the first game-theoretic network creation model that incorporates greedy routing, i.e., the strategic agents in our model are embedded in some metric space and strive for creating a network among themselves where all-pairs greedy routing is enabled. Besides this, the agents optimize their connection quality within the created network by aiming for greedy routing paths with low stretch. For our model, we analyze the existence of (approximate)-equilibria and the computational hardness in different underlying metric spaces. E.g., we characterize the set of equilibria in 1-2-metrics and tree metrics and show that Nash equilibria always exist. For Euclidean space, the setting which is most relevant in practice, we prove that equilibria are not guaranteed to exist but that the well-known Θ-graph construction yields networks having a low stretch that are game-theoretically almost stable. For general metric spaces, we show that approximate equilibria exist where the approximation factor depends on the cost of maintaining any link.
Julian Berger, Tobias Friedrich 0001, Pascal Lenzner, Paraskevi Machaira, Janosch Ruff
AAAI1
2024 In search for complementarity: evaluating confirmation trees across domains and varying levels of human expertise
Julian Berger, Diana Verdes, Kristian P. Lorenzen, Pantelis P. Analytis, Ralf H. J. M. Kurvers
CogSci1
2023 Confirmation trees: A simple strategy for producing hybrid intelligence
Pantelis P. Analytis, Diana Verdes, Kristian P. Lorenzen, Julian Berger, Ralf H. J. M. Kurvers
CogSci5
2021 Learning Languages with Decidable Hypotheses
Julian Berger, Maximilian Böther, Vanja Doskoc, Jonathan Gadea Harder, Nicolas Klodt, Timo Kötzing, Winfried Lötzsch, Jannik Peters 0001, Leon Schiller, Lars Seifert, Armin Wells, Simon Wietheger
CiE1