Tootfinder

Let the Tree Decide: FABART A Non-Parametric Factor Model
Sofia Velasco
https://arxiv.org/abs/2506.11551 https://arxiv.org/pdf/2506.1…

Let the Tree Decide: FABART A Non-Parametric Factor Model
This article proposes a novel framework that integrates Bayesian Additive Regression Trees (BART) into a Factor-Augmented Vector Autoregressive (FAVAR) model to forecast macro-financial variables and examine asymmetries in the transmission of oil price shocks. By employing nonparametric techniques for dimension reduction, the model captures complex, nonlinear relationships between observables and latent factors that are often missed by linear approaches. A simulation experiment comparing FABART…

This https://arxiv.org/abs/2402.19331 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Multiplicative Hitchin Fibrations and the Fundamental Lemma
Let $k$ be a finite field and let $G$ be a reductive group over $k[[π]]$. Suppose $\mathrm{char}(k)$ is larger than twice the Coxeter number of $G$, we prove the standard endoscopic fundamental lemma for the spherical Hecke algebra of $G$ using multiplicative Hitchin fibrations.

Good Morning #Canada
It's #FridayThe13th, which is a lucky day for me as 13 is my favourite number. 13th place was also Canada’s rank in the 2024 Happiest Country study, but unfortunately, we fell to 18th place in 2025. IMO, having #PeePee trash Canada and the government incessantly for the past few years has contributed to that drop. We also have a lot of work to do to match the happy Nordic countries in social and economic support.
#CanadaIsAwesome #BeHappy
https://gfmag.com/data/happiest-countries/

Real Toric Varieties: Interactions between their Geometry and their Topology
Jules Chenal (LPP), Matilde Manzaroli
https://arxiv.org/abs/2506.03745 https:/…

Real Toric Varieties: Interactions between their Geometry and their Topology
In the present article, we investigate the topology of real toric varieties, especially those whose torus is not split over the field of real numbers. We describe some canonical fibrations associated to their real loci. Then, we establish various properties of their cohomology provided that their real loci are compact and smooth. For instance, we compute their Betti numbers, show that their cohomology is totally algebraic, and extend a criterion of orientability. In addition, we provide the top…

This https://arxiv.org/abs/2205.09386 has been replaced.
link: https://scholar.google.com/scholar?q=a

On the Distortion of Multi-winner Election Using Single-Candidate Ballots
In this paper, we study the distortion bounds for voting mechanisms in multi-winner elections in general metric spaces. Our study pertains to the case in which each voter only reports her favorite candidate amongst $m$ possible choices. Given that candidates' locations are undisclosed to the mechanism, the mechanism has to form a $w-$winner committee based solely on the number of votes received by candidates. We establish distortion bounds for both truthful and non-truthful mechanisms. Our rese…