Search Results for author: Jobst Heitzig

Found 12 papers, 4 papers with code

Non-maximizing policies that fulfill multi-criterion aspirations in expectation

no code implementations8 Aug 2024 Simon Dima, Simon Fischer, Jobst Heitzig, Joss Oliver

In dynamic programming and reinforcement learning, the policy for the sequential decision making of an agent in a stochastic environment is usually determined by expressing the goal as a scalar reward function and seeking a policy that maximizes the expected total reward.

Sequential Decision Making

Social Choice Should Guide AI Alignment in Dealing with Diverse Human Feedback

no code implementations16 Apr 2024 Vincent Conitzer, Rachel Freedman, Jobst Heitzig, Wesley H. Holliday, Bob M. Jacobs, Nathan Lambert, Milan Mossé, Eric Pacuit, Stuart Russell, Hailey Schoelkopf, Emanuel Tewolde, William S. Zwicker

Foundation models such as GPT-4 are fine-tuned to avoid unsafe or otherwise problematic behavior, such as helping to commit crimes or producing racist text.

Ethics

Improving International Climate Policy via Mutually Conditional Binding Commitments

no code implementations26 Jul 2023 Jobst Heitzig, Jörg Oechssler, Christoph Pröschel, Niranjana Ragavan, Richie YatLong Lo

This paper proposes enhancements to the RICE-N simulation and multi-agent reinforcement learning framework to improve the realism of international climate policy negotiations.

Decision Making Multi-agent Reinforcement Learning +2

Improving International Climate Policy via Mutually Conditional Binding Commitments

no code implementations26 Jul 2023 Jobst Heitzig, Jörg Oechssler, Christoph Pröschel, Niranjana Ragavan, Yat Long Lo

The Paris Agreement, considered a significant milestone in climate negotiations, has faced challenges in effectively addressing climate change due to the unconditional nature of most Nationally Determined Contributions (NDCs).

Moving the epidemic tipping point through topologically targeted social distancing

no code implementations19 Feb 2021 Sara Ansari, Mehrnaz Anvari, Oskar Pfeffer, Nora Molkenthin, Frank Hellmann, Jobst Heitzig, Juergen Kurths

Modeling the disease as a spreading process on a social graph, social distancing can be modeled by removing some of the graphs links.

Physics and Society

Anticipation-induced social tipping -- Can the environment be stabilised by social dynamics?

no code implementations3 Dec 2020 Paul Manuel Müller, Jobst Heitzig, Jürgen Kurths, Kathy Lüdge, Marc Wiedermann

Acknowledging that societies have the additional capability for foresight, this work proposes a conceptual feedback model of socio-ecological co-evolution with the specific construct of anticipation acting as a mediator between the social and natural system.

Physics and Society

Degrees of individual and groupwise backward and forward responsibility in extensive-form games with ambiguity, and their application to social choice problems

no code implementations9 Jul 2020 Jobst Heitzig, Sarah Hiller

Many real-world situations of ethical relevance, in particular those of large-scale social choice such as mitigating climate change, involve not only many agents whose decisions interact in complicated ways, but also various forms of uncertainty, including quantifiable risk and unquantifiable ambiguity.

Binary Classification Form

Deep reinforcement learning in World-Earth system models to discover sustainable management strategies

1 code implementation15 Aug 2019 Felix M. Strnad, Wolfram Barfuss, Jonathan F. Donges, Jobst Heitzig

Increasingly complex, non-linear World-Earth system models are used for describing the dynamics of the biophysical Earth system and the socio-economic and socio-cultural World of human societies and their interactions.

Deep Reinforcement Learning Management +2

Operationalization of Topology of Sustainable Management to Estimate Qualitatively Different Regions in State Space

2 code implementations8 Jun 2017 Tim Kittel, Rebekka Koch, Jobst Heitzig, Guillaume Deffuant, Jean-Denis Mathias, Jürgen Kurths

To apply the framework of Topology of Sustainable Management (TSM) by Heitzig et al. (2016) to dynamical models, we connect it to viability theory (VT) via a variant definition of the former.

Optimization and Control

Unified functional network and nonlinear time series analysis for complex systems science: The pyunicorn package

1 code implementation2 Jul 2015 Jonathan F. Donges, Jobst Heitzig, Boyan Beronov, Marc Wiedermann, Jakob Runge, Qing Yi Feng, Liubov Tupikina, Veronika Stolbova, Reik V. Donner, Norbert Marwan, Henk A. Dijkstra, Jürgen Kurths

Additionally, \texttt{pyunicorn} provides insights into the nonlinear dynamics of complex systems as recorded in uni- and multivariate time series from a non-traditional perspective by means of recurrence quantification analysis (RQA), recurrence networks, visibility graphs and construction of surrogate time series.

Data Analysis, Statistics and Probability Atmospheric and Oceanic Physics

Macroscopic description of complex adaptive networks co-evolving with dynamic node states

2 code implementations19 Mar 2015 Marc Wiedermann, Jonathan F. Donges, Jobst Heitzig, Wolfgang Lucht, Jürgen Kurths

In many real-world complex systems, the time-evolution of the network's structure and the dynamic state of its nodes are closely entangled.

Physics and Society

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