Tootfinder

STRAPSim: A Portfolio Similarity Metric for ETF Alignment and Portfolio Trades
Mingshu Li, Dhruv Desai, Jerinsh Jeyapaulraj, Philip Sommer, Riya Jain, Peter Chu, Dhagash Mehta
https://arxiv.org/abs/2509.24151

STRAPSim: A Portfolio Similarity Metric for ETF Alignment and Portfolio Trades
Accurately measuring portfolio similarity is critical for a wide range of financial applications, including Exchange-traded Fund (ETF) recommendation, portfolio trading, and risk alignment. Existing similarity measures often rely on exact asset overlap or static distance metrics, which fail to capture similarities among the constituents (e.g., securities within the portfolio) as well as nuanced relationships between partially overlapping portfolios with heterogeneous weights. We introduce STRAP…

Winding Motion of Spirals in a Gravitationally Unstable #Protoplanetary Disk: https://arxiv.org/abs/2509.19761 -> Winding Motion of Planet-Forming Spirals Captured on Video for the First Time: https://alma-telescope.jp/en/news/press/vimage-202509.html -> Spirals in Planet-Forming Disk Caught Twisting for the First Time with ALMA: https://www.almaobservatory.org/en/press-releases/spirals-in-planet-forming-disk-caught-twisting-for-the-first-time-with-alma/

Polarization at millimeter wavelengths caused by drifting grains in protoplanetary disks
Moritz Lietzow-Sinjen, Stefan Reissl, Mario Flock, Sebastian Wolf
https://arxiv.org/abs/2509.24594

Polarization at millimeter wavelengths caused by drifting grains in protoplanetary disks
During the evolution of protoplanetary disks, dust grains start to grow, form larger particles, settle to the midplane, and rearrange the disk, mainly by the inward radial drift. Because of this, dust pebbles with an irregular shape usually align mechanically and thus cause polarization signatures in their thermal radiation due to dichroic emission or absorption. The goal of this paper is to evaluate the potential to trace the impact of mechanical grain alignment in protoplanetary disks on the …

Je cherche des personnes s'étant inscrit sur #Peertube).
Il y a un peu moins de 4 moins j'avais essayé de upload des vidéos sans succès (Š chaque fois le % revenait Š 0%).

From Headlines to Holdings: Deep Learning for Smarter Portfolio Decisions
Yun Lin, Jiawei Lou, Jinghe Zhang
https://arxiv.org/abs/2509.24144 https://arxiv.…

From Headlines to Holdings: Deep Learning for Smarter Portfolio Decisions
Deep learning offers new tools for portfolio optimization. We present an end-to-end framework that directly learns portfolio weights by combining Long Short-Term Memory (LSTM) networks to model temporal patterns, Graph Attention Networks (GAT) to capture evolving inter-stock relationships, and sentiment analysis of financial news to reflect market psychology. Unlike prior approaches, our model unifies these elements in a single pipeline that produces daily allocations. It avoids the traditional…

Look And Listen (sing-along)
Music:
Look And Listen
Mister Rogers
It's Such A Good Feeling: The Best Of Mister Rogers
Full videos:
1. https://peertube.wtf/videos/embed/4nbtJwdPQwZBMpsP2TzFkf
2.

Protip: if you get tired of the flood of AI discourse, just read it as being short for "Artificial Inseminaton" for a while.

Turbulence and dust fragility in protoplanetary discs
Simin Tong, Richard Alexander, Giovanni Rosotti
https://arxiv.org/abs/2509.24818 https://arxiv.org/pd…

Turbulence and dust fragility in protoplanetary discs
Dust growth from micron- to planet-size in protoplanetary discs involves multiple physical processes, including dust growth and fragmentation, the streaming instability, and pebble accretion. Disc turbulence and dust fragility matter at almost every stage. Previous studies typically vary one of them while fixing the other, failing to provide a complete picture. Here, we use analytical models and numerical dust evolution models DustPy to study the combinations of gas turbulence and dust fragilit…