Dr. Alexander Braun

I am a scientific researcher in computer science. Previously, I graduated from my PhD in theoretical computer science in July 2024. In my research, I consider online resource allocation problems. My main focus is on scenarios in which some stochastic prior believe is available to the algorithm upfront, mirroring the access to past data.

In summer 2023, I was a Software Development Intern at Amazon Web Services in Berlin. In fall 2022, I was visiting the Simons Institute for the Theory of Computing at UC Berkeley for the program on Data-Driven Decision Processes. During my studies, I was advised by Prof. Dr. Thomas Kesselheim and my research was supported in part by Deutsche Forschungsgemeinschaft (DFG). Before my PhD, I received a M.Sc. in Mathematics from University of Bonn.

Publications

  • The Secretary Problem with Predicted Additive Gap
    A.B. and Sherry Sarkar
    Accepted for publication at NeurIPS 2024
    ArXiv
  • Approximating Optimum Online for Capacitated Resource Allocation
    A.B., Thomas Kesselheim, Tristan Pollner and Amin Saberi
    ACM Conference on Economics and Computation, EC 2024, Yale University, USA
    ArXiv
  • Simplified Prophet Inequalities for Combinatorial Auctions
    A.B. and Thomas Kesselheim
    SIAM Symposium on Simplicity in Algorithms, SOSA 2023, Florence, Italy
    PDF | BibTex | ArXiv
  • Asymptotically Optimal Welfare of Posted Pricing for Multiple Items with MHR Distributions
    A.B., Matthias Buttkus and Thomas Kesselheim
    29th Annual European Symposium on Algorithms, ESA 2021, Lisbon, Portugal (virtual)
    PDF | BibTex | ArXiv | Talk

Research Seminar

Since spring 2023, I am organizing the joint research seminar of Group I and our group. Details are available on the seminar pages for summer 2023, winter 2023/24, summer 2024 and winter 2024/25.

Teaching Assistance

Contact Details

University of Bonn, Institute of Computer Science, Dept. V, Room 2.066, Friedrich-Hirzebruch-Allee 8, 53115 Bonn, Germany
Phone: (+49) 228 - 73 60683
Mail: firstname.lastname@uni-bonn.de
Office Hours: By appointment. Also virtual meetings are possible.


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