Tootfinder

Following yesterday's interest rate announcement, it's worth a reminder that our collective fixation on inflation only reflects one aspect of the Bank's remit under the Bank of Canada Act (1985).
The BoC is tasked with mitigating "fluctuations in the general level of production, trade, prices and employment" - that is, using interest rates not only to influence inflation, but employment, etc. The obsession with 2% came later and isn't reflected in the law.

Online Submodular Welfare Maximization Meets Post-Allocation Stochasticity and Reusability
Rajan Udwani
https://arxiv.org/abs/2403.18059 https://

Online Submodular Welfare Maximization Meets Post-Allocation Stochasticity and Reusability
We generalize the problem of online submodular welfare maximization to incorporate a variety of new elements arising from reusability, stochastic rewards, combinatorial actions and similar features that have received significant attention in recent years. For our general formulation, we show that a non-adaptive Greedy algorithm achieves the highest possible competitive ratio against an adaptive offline benchmark in the adversarial arrival model and in the unknown IID stochastic arrival model. I…

"Die Fokusspirale" #Produktivität

This https://arxiv.org/abs/2310.09271 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csGT_…

Efficiency of Non-Truthful Auctions in Auto-bidding with Budget Constraints
We study the efficiency of non-truthful auctions for auto-bidders with both return on spend (ROS) and budget constraints. The efficiency of a mechanism is measured by the price of anarchy (PoA), which is the worst case ratio between the liquid welfare of any equilibrium and the optimal (possibly randomized) allocation. Our first main result is that the first-price auction (FPA) is optimal, among deterministic mechanisms, in this setting. Without any assumptions, the PoA of FPA is $n$ which we p…

Modeling Ionized Gas in the Small Magellanic Cloud: The Wolf-Rayet Nebula N76
Elizabeth Tarantino, Alberto D. Bolatto, R\'emy Indebetouw, M\'onica Rubio, Karin M. Sandstrom, J. -D T. Smith, Daniel Stapleton, Mark Wolfire
https://arxiv.org/abs/2404.08041

Modeling Ionized Gas in the Small Magellanic Cloud: The Wolf-Rayet Nebula N76
We present Cloudy modeling of infrared emission lines in the Wolf-Rayet (WR) nebula N76 caused by one of the most luminous and hottest WR stars in the low metallicity Small Magellanic Cloud. We use spatially resolved mid-infrared Spitzer/IRS and far-infrared Herschel/PACS spectroscopy to establish the physical conditions of the ionized gas. The spatially resolved distribution of the emission allows us to constrain properties much more accurately than using spatially integrated quantities. We co…

Am 9. Juni 2024 findet die Europawahl auch in Deutschland statt, nutzt die Chance etwas für die Demokratie zu tun ❎
Diejenigen, die die Demokratie gerne abschaffen wollen, gehen zuverlässig zur Wahl - also setzt ihnen etwas entgegen!
Die Briefwahlunterlagen können in #Frankfurt einfach mit wenigen Klicks mit dem schon zugeschickten QR-Code angefordert werden.
Mehr Infor…

Accelerating Time-to-Science by Streaming Detector Data Directly into Perlmutter Compute Nodes
Samuel S. Welborn, Bjoern Enders, Chris Harris, Peter Ercius, Deborah J. Bard
https://arxiv.org/abs/2403.14352

Accelerating Time-to-Science by Streaming Detector Data Directly into Perlmutter Compute Nodes
Recent advancements in detector technology have significantly increased the size and complexity of experimental data, and high-performance computing (HPC) provides a path towards more efficient and timely data processing. However, movement of large data sets from acquisition systems to HPC centers introduces bottlenecks owing to storage I/O at both ends. This manuscript introduces a streaming workflow designed for an high data rate electron detector that streams data directly to compute node me…

A rate-distortion framework for MCMC algorithms: geometry and factorization of multivariate Markov chains
Michael C. H. Choi, Youjia Wang, Geoffrey Wolfer
https://arxiv.org/abs/2404.12589

A rate-distortion framework for MCMC algorithms: geometry and factorization of multivariate Markov chains
We introduce a framework rooted in a rate distortion problem for Markov chains, and show how a suite of commonly used Markov Chain Monte Carlo (MCMC) algorithms are specific instances within it, where the target stationary distribution is controlled by the distortion function. Our approach offers a unified variational view on the optimality of algorithms such as Metropolis-Hastings, Glauber dynamics, the swapping algorithm and Feynman-Kac path models. Along the way, we analyze factorizability a…

Modeling Ionized Gas in the Small Magellanic Cloud: The Wolf-Rayet Nebula N76
Elizabeth Tarantino, Alberto D. Bolatto, R\'emy Indebetouw, M\'onica Rubio, Karin M. Sandstrom, J. -D T. Smith, Daniel Stapleton, Mark Wolfire
https://arxiv.org/abs/2404.08041

Modeling Ionized Gas in the Small Magellanic Cloud: The Wolf-Rayet Nebula N76
We present Cloudy modeling of infrared emission lines in the Wolf-Rayet (WR) nebula N76 caused by one of the most luminous and hottest WR stars in the low metallicity Small Magellanic Cloud. We use spatially resolved mid-infrared Spitzer/IRS and far-infrared Herschel/PACS spectroscopy to establish the physical conditions of the ionized gas. The spatially resolved distribution of the emission allows us to constrain properties much more accurately than using spatially integrated quantities. We co…

Welfare Loss in Connected Resource Allocation
Xiaohui Bei, Alexander Lam, Xinhang Lu, Warut Suksompong
https://arxiv.org/abs/2405.03467 https://

Welfare Loss in Connected Resource Allocation
We study the allocation of indivisible goods that form an undirected graph and investigate the worst-case welfare loss when requiring that each agent must receive a connected subgraph. Our focus is on both egalitarian and utilitarian welfare. Specifically, we introduce the concept of egalitarian (resp., utilitarian) price of connectivity, which captures the worst-case ratio between the optimal egalitarian (resp., utilitarian) welfare among all allocations and that among the connected allocation…