Portrait of Henri Lotze

Dr. Henri Lotze

Hello, I am a computer scientist from Germany. I studied computer science in the years 2012 ‒ 2018 at RWTH Aachen University and obtained my masters degree with honors in 2018. I obtained my doctoral degree in 2023 with the Theory Group, lead by Prof. Dr. Peter Rossmanith. I studied modifications of the standard model for online algorithms.

I enjoy bouldering, playing tabletop role playing games, endlessly configuring my devices and being humbled by how hard good typesetting, layouts and ux designs are to achieve.

Feel free to contact me via mail!

Publications

For an up-to-date list of my publications visit my dblp page.
  • Online Node- and Edge-Deletion Problems with Advice
  • Algorithmica: Li-Hsuan Chen, Ling-Ju Hung, Henri Lotze, Peter Rossmanith
  • Since publishing, we have found a number of small errata in this work. Please consult chapter 2 of my dissertation for a cleaned up version.

Public Software

Algorithmic Battle (User Manual)

Let teams compete by making them create hard instances and fast solvers for problems of your choice. Then pitch these instances and solvers against one another. All language-agnostic.

Algorithmic Battle - Problems

Companion collection of sample problems for the algobattle framework. Try some of these out to familiarize yourself with the algobattle framework.

Algorithmic Battle - Web

Companion webserver for the algobattle framework. Manage Problems, teams with their code and results and schedule automatically executing battles. All packed up in containers.

Exercise System

Basic framework to modularly create exercise sheets using Latex, a little bit of python and some Makefile magic. Tasks are named and collected in a big catalogue file, easily plugged into a sheet by referencing their internal id.

Each project is published under an MIT License.

Pictures

I take pictures occasionally that I use as wallpapers on mobile devices. You may, too, if you like.
(License: Creative Commons BY-NC-SA 4.0, where applicable)
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