Tootfinder

At Berlin Buzzwords 2025, Evgeniya Sukhodolskaya presented miniCOIL—a novel approach to creating a sparse neural retrieval model. This model aims to combine the advantages of dense and lexical retrieval methods while avoiding their drawbacks. Evgeniya discussed how to design and train a lightweight model that performs well on out-of-domain data and demonstrated its capabilities.
Watch the full session: #bbuzz 2026: https://tickets.plainschwarz.com/bbuzz26/c/8Hvk0ZvJA/

HYLU: Hybrid Parallel Sparse LU Factorization
Xiaoming Chen
https://arxiv.org/abs/2509.07690 https://arxiv.org/pdf/2509.07690

HYLU: Hybrid Parallel Sparse LU Factorization
This article introduces HYLU, a hybrid parallel LU factorization-based general-purpose solver designed for efficiently solving sparse linear systems (Ax=b) on multi-core shared-memory architectures. The key technical feature of HYLU is the integration of hybrid numerical kernels so that it can adapt to various sparsity patterns of coefficient matrices. Tests on 34 sparse matrices from SuiteSparse Matrix Collection reveal that HYLU outperforms Intel MKL PARDISO in the numerical factorization pha…

RoentMod: A Synthetic Chest X-Ray Modification Model to Identify and Correct Image Interpretation Model Shortcuts
Lauren H. Cooke, Matthias Jung, Jan M. Brendel, Nora M. Kerkovits, Borek Foldyna, Michael T. Lu, Vineet K. Raghu
https://arxiv.org/abs/2509.08640

RoentMod: A Synthetic Chest X-Ray Modification Model to Identify and Correct Image Interpretation Model Shortcuts
Chest radiographs (CXRs) are among the most common tests in medicine. Automated image interpretation may reduce radiologists\' workload and expand access to diagnostic expertise. Deep learning multi-task and foundation models have shown strong performance for CXR interpretation but are vulnerable to shortcut learning, where models rely on spurious and off-target correlations rather than clinically relevant features to make decisions. We introduce RoentMod, a counterfactual image editing framewo…

DMs und Sprachnachrichten in Tiktok
Konkurrenz für WhatsApp: Tiktok ermöglicht nun auch das Versenden von privaten Nachrichten und sogar Sprachnachrichten.
https://www.heise.de/news/DMs-und-Sprachna…

Marc Maron on Anti-Woke "comedians". 🎯
I still think the best explanation for the anti-woke comedy thing is the "rebel comedian" ethos. These clowns think they're pushing back on suppression of speech, but they're just punching down.
I also notice Howie Mandel tries to downplay the influence (not "power") comedians with large platforms have.

Optimizing Small Transformer-Based Language Models for Multi-Label Sentiment Analysis in Short Texts
Julius Neumann, Robert Lange, Yuni Susanti, Michael F\"arber
https://arxiv.org/abs/2509.04982

Optimizing Small Transformer-Based Language Models for Multi-Label Sentiment Analysis in Short Texts
Sentiment classification in short text datasets faces significant challenges such as class imbalance, limited training samples, and the inherent subjectivity of sentiment labels -- issues that are further intensified by the limited context in short texts. These factors make it difficult to resolve ambiguity and exacerbate data sparsity, hindering effective learning. In this paper, we evaluate the effectiveness of small Transformer-based models (i.e., BERT and RoBERTa, with fewer than 1 billion …

A relaxation scheme for the equations of isentropic gas dynamics on a network with jump transmission conditions
Magali Ribot (IDP, MaIAGE, MUSCA), Roberto Natalini (IAC), Maya Briani (IAC)
https://arxiv.org/abs/2507.05779

A relaxation scheme for the equations of isentropic gas dynamics on a network with jump transmission conditions
In this paper we propose a new numerical scheme of relaxation type to approximate the Euler equations of isentropic gas dynamics on the arcs of a network. At the junction mass conservation and a jump transmission condition on the density are given, and a new solver is introduced to deal with both subsonic and supersonic cases. Consistency properties of the solver are proven and numerical tests are displayed to show its good performance also with respect to other possible solvers.

Twisted Homotopy Algebras: Supersymmetric Twists, Spontaneous Symmetry Breaking, Anomalies and Localisation
Leron Borsten, Simon Jonsson, Dimitri Kanakaris, Hyungrok Kim
https://arxiv.org/abs/2508.05134

Twisted Homotopy Algebras: Supersymmetric Twists, Spontaneous Symmetry Breaking, Anomalies and Localisation
Twisting and classical background fields are two foundational techniques in supersymmetric quantum field theory, central to developments ranging from the Higgs mechanism to topological twisting and supersymmetric localisation. While traditionally treated as distinct procedures, they appear on an equal footing in the homotopy-algebraic approach to quantum field theory. In this work, we formalise this connection by interpreting both twisting and the introduction of classical backgrounds as instan…

Flip, a TikTok rival that let shoppers post video reviews and earn cash based on engagement, has shut down; it had raised $300M and was valued at $1B in 2024 (Ann Gehan/The Information)
https://www.theinformation.com/briefings/tiktok-challenger-flip-shuts

TikTok Challenger Flip Shuts Down
Flip, a video-sharing social media app that at one point tried to challenge TikTok’s dominance, has shut down, according to a message to users and the company’s website. Flip didn’t immediately respond to a request for comment. The social commerce app raised over $300 million from investors since its founding in 2019, and was valued in April 2024 at more than $1 billion, according to PitchBook