Tootfinder

Just read this long post on "the current state of Cara" https://cara.app/post/2e0d29d3-a57a-4b70-b0d0-9cefc15176ca
🤔 "Not having an algorithmically recommended feed is the biggest reason why people dropped off from Cara after we went viral. In a chronolog…

Jingna Zhang (@zemotion) | Cara - Artist Social & Portfolio Platform
About the current state of Cara— Hi all, I’d like to address some users' concerns about Cara’s stability, algorithms and reach, and why we don’t actively promote Cara and recruit new users. I have touched on most of these before through other posts, but I’ll like to go over the main points and put them in one place since they often come up as recurring questions: — Cara’s longevity/stability > "A few weeks ago, after learning how much Jingna was struggling with her personal l…

Variation of the disk thickness across ice bands: A method to determine ice abundances in highly inclined protoplanetary disks
Laurine Martinien, Gaspard Duch\^ene, Fran\c{c}ois M\'enard, Karl R. Stapelfeldt, Ryo Tazaki, Jennifer B. Bergner, Emmanuel Dartois, Jennifer A. Noble, William Thompson
https://arxiv.org/abs/2510.11359

Variation of the disk thickness across ice bands: A method to determine ice abundances in highly inclined protoplanetary disks
The James Webb Space Telescope provides unprecedented information to study ices in protoplanetary disks. However, the saturation of ice bands in highly inclined disks hinders the measurement of ice abundances using classical spectroscopy. This is unfortunate as the presence and more importantly abundance of ices plays a key role in, e.g., the evolution of dust (because it modifies the sticking properties) and the composition of planetesimals and exoplanetary atmospheres. To overcome this issue …

Schule zeigt Haltung – Lehrkräfte stärken gegen Hass und Hetze
Dieses Thema liegt mir am Herzen. Bitte hier unterzeichnen: https://weact.campact.de/petitions/schule-zeigt-haltung-lehrkr…

Schule zeigt Haltung – Lehrkräfte stärken gegen Hass und Hetze
Haltung statt Zurückhaltung – das gilt auch für die Behörden! Autoritäre Kräfte missbrauchen den Mythos eines angeblichen „Neutralitätsgebotes“, um Lehrkräfte einzuschüchtern und demokratisches Engagement zu diskreditieren. Über Meldeportale, parlamentarische Anfragen, Kampagnen und Bedrohungen wird gezielt ein Klima der Angst geschürt. Das Neutralitätsgebot des Staates verpflichtet zwar zur parteipolitischen Zurückhaltung. Es bedeutet jedoch nicht, dass Lehrkräfte gegenüber…

A Practitioner's Guide to Multi-turn Agentic Reinforcement Learning
Ruiyi Wang, Prithviraj Ammanabrolu
https://arxiv.org/abs/2510.01132 https://arxiv.o…

A Practitioner's Guide to Multi-turn Agentic Reinforcement Learning
We study what actually works and what doesn't for training large language models as agents via multi-turn reinforcement learning. Despite rapid progress, existing frameworks and definitions are fragmented, and there is no systematic formulation or analysis of which design choices matter across tasks. We address this gap by first breaking down the design space into three inter-related pillars -- environment, reward, and policy -- and empirically derive a recipe for training LLM agents in situate…

Performance Analysis for Multi-User Holographic MIMO Downlink with Matched Filter Precoding
Gayathri Shekar, Saman Atapattu, Prathapasinghe Dharmawansa, Kandeepan Sithamparanathan
https://arxiv.org/abs/2510.04530

Performance Analysis for Multi-User Holographic MIMO Downlink with Matched Filter Precoding
Holographic MIMO (HMIMO) has emerged as a promising solution for future wireless systems by enabling ultra-dense, spatially continuous antenna deployments. While prior studies have primarily focused on electromagnetic (EM) modeling or simulation-based performance analysis, a rigorous communication-theoretic framework remains largely unexplored. This paper presents the first analytical performance study of a multi-user HMIMO downlink system with matched filter (MF) precoding - a low-complexity b…

A Martingale approach to continuous Portfolio Optimization under CVaR like constraints
J\'er\^ome Lelong (LJK), V\'eronique Maume-Deschamps, William Thevenot
https://arxiv.org/abs/2509.26009

A Martingale approach to continuous Portfolio Optimization under CVaR like constraints
We study a continuous-time portfolio optimization problem under an explicit constraint on the Deviation Conditional Value-at-Risk (DCVaR), defined as the difference between the CVaR and the expected terminal wealth. While the mean-CVaR framework has been widely explored, its time-inconsistency complicates the use of dynamic programming. We follow the martingale approach in a complete market setting, as in Gao et al. [4], and extend it by retaining an explicit DCVaR constraint in the problem for…

Quantum Portfolio Optimization: An Extensive Benchmark
Eric Stopfer, Friedrich Wagner
https://arxiv.org/abs/2509.17876 https://arxiv.org/pdf/2509.17876

Quantum Portfolio Optimization: An Extensive Benchmark
Recently, several researchers proposed portfolio optimization as a potential use case for quantum optimization. However, the literature is lacking an extensive benchmark quantifying the potential of quantum computers for portfolio optimization. In this work, we fill this gap. We provide a computational study, comparing quantum approaches against state-of-the-art classical methods on a meaningful, real-world instance set. In particular, we compare quantum annealing and the quantum approximate op…

Edge-On Disk Study (EODS) III: Molecular Stratification in the Flying Saucer Disk
A. Dutrey, O. Denis-Alpizar, S. Guilloteau, C. Foucher, S. Gavino, D. Semenov, V. Pietu, E. Chapillon, L. Testi, E. Dartois, E. DiFolco, K. Furuya, U. Gorti, N. Grosso, Th. Henning, J. M. Hur\'e, \'A. K\'osp\'al, F. Le Petit, L. Majumdar, R. Meshaka, H. Nomura, N. T. Phuong, M. Ruaud, Y. W. Tang, S. Wolf

Edge-On Disk Study (EODS) III: Molecular Stratification in the Flying Saucer Disk
Context: Investigating the vertical distribution of molecular content in protoplanetary disks remains difficult in most disks mildly inclined along the line of sight. In contrast, edge-on disks provide a direct (tomographic) view of the 2D molecular brightness. Aims: We study the radial and vertical molecular distribution as well as the gas temperature and density by observing the Keplerian edge-on disk surrounding the Flying Saucer, a Class II object located in Ophiuchus. Methods: We use new a…

Inverse Portfolio Optimization with Synthetic Investor Data: Recovering Risk Preferences under Uncertainty
Jinho Cha, Long Pham, Thi Le Hoa Vo, Jaeyoung Cho, Jaejin Lee
https://arxiv.org/abs/2510.06986

Inverse Portfolio Optimization with Synthetic Investor Data: Recovering Risk Preferences under Uncertainty
This study develops an inverse portfolio optimization framework for recovering latent investor preferences including risk aversion, transaction cost sensitivity, and ESG orientation from observed portfolio allocations. Using controlled synthetic data, we assess the estimator's statistical properties such as consistency, coverage, and dynamic regret. The model integrates robust optimization and regret-based inference to quantify welfare losses under preference misspecification and market shocks.…

Portfolio Analysis Based on Markowitz Stochastic Dominance Criteria: A Behavioral Perspective
Peng Xu
https://arxiv.org/abs/2509.22896 https://arxiv.org/pd…

Portfolio Analysis Based on Markowitz Stochastic Dominance Criteria: A Behavioral Perspective
This paper develops stochastic optimization problems for describing and analyzing behavioral investors with Markowitz Stochastic Dominance (MSD) preferences. Specifically, we establish dominance conditions in a discrete state-space to capture all reverse S-shaped MSD preferences as well as all subjective decision weights generated by inverse S-shaped probability weighting functions. We demonstrate that these dominance conditions can be admitted as linear constraints into the stochastic optimiza…