Eckehard Olbrich
Biographic Data
| ID | 4974226 |
|---|---|
| NAME | Eckehard Olbrich |
| GIVEN NAMES | Eckehard |
| FAMILY NAME | Olbrich |
| SIGNATURE | OLBRICH E |
| AFFILIATIONS | Max Planck Institute for Mathematics |
| ORCID | 0000-0002-3987-1271 |
| VERIFIED | Yes |
| TOTAL WORKS | 5 |
| TOTAL CITATIONS | 4 |
| WORKS AS AUTHOR | 5 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2007 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
The social dilemma of online segregation
To understand how social media shapes online discourse or contributes to polarization, we need models of collective online choice that link users’ behavioral adaptation to the emergence of complex and dynamic digital environments. This study develops a dynamic model of platform selection based on Social Feedback Theory, using multi-agent reinforcement learning to capture how user decisions are shaped by past rewards across platforms. A key parame…
The Twitter Explorer
We present an open-source interface for scientists to explore Twitter data through interactive network visualizations. Combining data collection, transformation and visualization in one easily accessible framework, the twitter explorer connects distant and close reading of Twitter data through the interactive exploration of interaction networks and semantic networks. By lowering the technological barriers of data-driven research, it aims to attra…
An Argument Communication Model of Polarization and Ideological Alignment
A multi-level model of opinion formation is presented which takes into\naccount that attitudes on different issues are usually not independent. In the\nmodel, agents exchange beliefs regarding a series of facts. A cognitive\nstructure of evaluative associations links different (partially overlapping)\nsets of facts to different political issues and determines an agents'\nattitudinal positions in a way borrowed from expectancy value theory. If age…
The Coconut Model with Heterogeneous Strategies and Learning
In this paper, we develop an agent-based version of the Diamond search equilibrium model -also called Coconut Model. In this model, agents are faced with production decisions that have to be evaluated based on their expectations about the future utility of the produced entity which in turn depends on the global production level via a trading mechanism. While the original dynamical systems formulation assumes an infinite number of homogeneously ad…
Luhmanns Gesellschaftstheorie
Ein einflussreiches Paradigma in der Untersuchung komplexer Systeme versucht biologische und soziale Systeme als »quasi-physikalische« Systeme zu verstehen, d.h. Systeme, in denen die Elemente nach Regeln interagieren, die wie physikalische Gesetze behandelt werden können, und die durch Prozesse der Selbstorganisation zur Emergenz von Strukturen auf höheren Ebenen führen. Dabei bleibt aber unklar, worin das spezifisch Biologische oder Soziale die…
An Argument Communication Model of Polarization and Ideological Alignment
A multi-level model of opinion formation is presented which takes into\naccount that attitudes on different issues are usually not independent. In the\nmodel, agents exchange beliefs regarding a series of facts. A cognitive\nstructure of evaluative associations links different (partially overlapping)\nsets of facts to different political issues and determines an agents'\nattitudinal positions in a way borrowed from expectancy value theory. If age…
Luhmanns Gesellschaftstheorie
Ein einflussreiches Paradigma in der Untersuchung komplexer Systeme versucht biologische und soziale Systeme als »quasi-physikalische« Systeme zu verstehen, d.h. Systeme, in denen die Elemente nach Regeln interagieren, die wie physikalische Gesetze behandelt werden können, und die durch Prozesse der Selbstorganisation zur Emergenz von Strukturen auf höheren Ebenen führen. Dabei bleibt aber unklar, worin das spezifisch Biologische oder Soziale die…
The Coconut Model with Heterogeneous Strategies and Learning
In this paper, we develop an agent-based version of the Diamond search equilibrium model -also called Coconut Model. In this model, agents are faced with production decisions that have to be evaluated based on their expectations about the future utility of the produced entity which in turn depends on the global production level via a trading mechanism. While the original dynamical systems formulation assumes an infinite number of homogeneously ad…
The Twitter Explorer
We present an open-source interface for scientists to explore Twitter data through interactive network visualizations. Combining data collection, transformation and visualization in one easily accessible framework, the twitter explorer connects distant and close reading of Twitter data through the interactive exploration of interaction networks and semantic networks. By lowering the technological barriers of data-driven research, it aims to attra…
An Argument Communication Model of Polarization and Ideological Alignment
A multi-level model of opinion formation is presented which takes into\naccount that attitudes on different issues are usually not independent. In the\nmodel, agents exchange beliefs regarding a series of facts. A cognitive\nstructure of evaluative associations links different (partially overlapping)\nsets of facts to different political issues and determines an agents'\nattitudinal positions in a way borrowed from expectancy value theory. If age…
The social dilemma of online segregation
To understand how social media shapes online discourse or contributes to polarization, we need models of collective online choice that link users’ behavioral adaptation to the emergence of complex and dynamic digital environments. This study develops a dynamic model of platform selection based on Social Feedback Theory, using multi-agent reinforcement learning to capture how user decisions are shaped by past rewards across platforms. A key parame…
Opinion Dynamics and Social Influence (3 works) · Artificial Intelligence (2 works) · Complex Network Analysis Techniques (2 works) · Computer Science (2 works) · Philosophy (2 works) · Political science (2 works) · Social media (2 works) · Social Media and Politics (2 works) · Sociology (2 works) · Agent-based model (1 work)