Dominik Peters
@dominik-peters.de
79 followers 130 following 71 posts
CNRS researcher (Paris) on computer science & voting theory. I travel by train a lot. From 🇩🇪, studied in 🇬🇧, worked in 🇺🇸 and 🇨🇦, now live in 🇫🇷. Side interests in urbanism, effective altruism, theme parks, roller coasters, U.S. appellate law.
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dominik-peters.de
My first PhD student just graduated with an amazing dissertation. It was a great pleasure working together and to watch Théo pick up all the skills to be a great researcher. Excited for the future!
delemazuretheo.bsky.social
Et surtout un grand merci à mes directeurs de thèse Jérôme Lang et @dominik-peters.de
pour tout ce qu'ils m'ont appris !
dominik-peters.de
Résultats de la votation de la Ville de Paris ("Pour ou contre végétaliser et rendre piétonnes 500 nouvelles rues dans Paris ?") par arrondissement. www.datawrapper.de/_/2HKVf/
Reposted by Dominik Peters
arxiv-cs-gt.bsky.social
Christian Kroer, Dominik Peters
Computing Lindahl Equilibrium for Public Goods with and without Funding Caps
https://arxiv.org/abs/2503.16414
dominik-peters.de
@dividedargument.bsky.social @williambaude.bsky.social @epps.bsky.social Was just relistening to an old episode and it turns out to include a timely side discussion about auto pen.
dominik-peters.de
Yeah, it would be nicer if Russia stopped its aggression and Westeners would be interested in going there again.
dominik-peters.de
Similar for some commuter trains around Paris.
> The vehicle's width is 3.06 metres (10 ft 0 in), which is wider than previous trains [which were are 2.82 metres], achieved by having a relatively short car length of 13.24 metres (43 ft 5 in).
en.wikipedia.org/wiki/SNCF_Cl...
SNCF Class Z 50000 - Wikipedia
en.wikipedia.org
dominik-peters.de
“HB 1297 passed 75 to 16.

A similar bill passed in the 2023 session – but was vetoed by then-Governor Doug Burgum – and the Legislature failed to override that veto.”

Sounds like they now have enough votes to override a veto 🥲
dominik-peters.de
Dieses Ergebnis war für mich überraschend -- ich hatte nicht mit so viel "Kollateralschaden" außerhalb Bayerns gerechnet. Wahrscheinlich sollte das Wahlrecht noch weiter angepasst werden, um das Prinzip der personalisierten Verhältniswahl besser zu bewahren.
dominik-peters.de
Die anderen 20 Wahlkreise haben ihr Direktmandat nur verloren, weil die Zweitstimmen erst nach Land aufgeteilt werden, was die Zweitstimmendeckung sehr unflexibel macht. Wenn man auf Bundesebene zählen würde, wären tatsächlich nur die 3 bayrischen Wahlkreise verloren gegangen.
dominik-peters.de
Der Grund, warum der Bundestag in letzter Zeit angewachsen ist, ist der fallende Zweitstimmenanteil der CSU in Bayern (wobei die CSU bei den Erststimmen weitenteils stärkste Kraft geblieben ist). Aber nur 3 der 23 Wahlkreise ohne Direktmandat befinden sich in Bayern!
dominik-peters.de
Die Wahlkreise ohne Direktmandat sind genau diejenigen, die am meisten umkämpft sind, häufig mit einem Kopf-an-Kopf-Rennen, wie hier in Frankfurt, wo der CDU-Kandidat knapp gewonnen hat, aber dann doch kein Direktmandat zugeteilt bekommen hat. Das wirkt problematisch.
dominik-peters.de
Um Frankfurt, Darmstadt, Heidelberg, und Mannheim gibt es eine Ansammlung von Wahlkreisen ohne Direktmandat -- in diesen Städten haben Bürger also keine Bundestagsmitglieder, die speziell für sie zuständig sind. Link zur Karte: www.datawrapper.de/_/bsCzu/
dominik-peters.de
Der Grund dafür ist das neue Konzept der "Zweitstimmendeckung", nachdem Direktkandidaten mit den meisten Stimmen in ihrem Wahlkreis nur dann in den Bundestag einziehen, wenn ihre Partei genügend Sitze auf Grundlage ihres Zweitstimmenanteils erhalten hat.
dominik-peters.de
Das deutsche Wahlrecht gibt jedem Wähler zwei Stimmen: für einen Direktkandidaten und eine Liste. Aber das Wahlrecht wurde für dieses Jahr geändert, um den Anwuchs der Sitze im Bundestag zu stoppen. Das führt aber dazu, dass 23 Wahlkreise diesmal kein Direktmandat erhalten. 🧵
dominik-peters.de
I think this result will be surprising to people. I hadn't expected their to be so much "collateral damage" outside Bavaria. Maybe there is potential for further tweaking of the German election system.
dominik-peters.de
The reason why the other 20 districts lost their representative is because the votes for a party are divided between individual states, leading to inflexible quotas. But one could easily operate the process nationwide, in which case only the 3 Bavarian districts would have lost their representative.
dominik-peters.de
The underlying reason why the number of Bundestag members was rising in recent years was the falling popularity of the CSU party in Bavaria (in terms of % but not in terms of districts won). But only 3 of the 23 districts without a representative are in Bavaria!
dominik-peters.de
The unrepresented districts are those where the local representative got the lowest % of votes, which tend to be the most competitive districts, such as this one in Frankfurt where the CDU candidate narrowly won -- but then actually lost and got no seat. This seems problematic.
dominik-peters.de
There is a sort of cluster where this happened around Frankfurt, Darmstadt, Mannheim, and Heidelberg -- major cities where people will not have a local representative in the Bundestag that they can call. Link to map: www.datawrapper.de/_/H6dRv/
dominik-peters.de
The German election system lets people vote for both a local representative and a party. But it changed this year: to stop the number of Bundestag members from fluctuating, some candidates that would've become local representatives lost if their party got too few votes. This happened in 23 districts
dominik-peters.de
mathieugallard.bsky.social
🗳️ Participation en hausse à 12h00 en Allemagne :

Essen 33,8% (+4,3)
Leipzig 54,6% (+4,2)
Wuppertal 43,3% (+4)
Munich 61,2% (+0,8)

Land de Saxe-Anhalt : 37,1% (+10,6)
dominik-peters.de
Feels so good to be able to vent to someone wise and well-read and who tends to agree with you. I have been procrastinating returning this page proof for months now because I get pissed off everytime I open the PDF.
dominik-peters.de
I can imagine that escalators that aren’t being used (and thus don’t move except during tests) don’t need much maintenance.

(I feel like I’ve seen emergency shaft escalators a few times, but maybe I just saw the Munich plans on multiple occasions.)
dominik-peters.de
They put palm trees all over Place de la Concorde — Paris Plage in February!
dominik-peters.de
Some caveats to the data: additional conversations have happened outside these websites (e.g. on Poe just after GPT-4 was released and with GitHub Copilot because it is free for eduction). Conversations not growing doesn't mean that number of tokens isn't growing.