Tootfinder

Meine FrOSCon 2025 – #unterwegs

#FotoDerWoche mit Wolken. https://blog.till-westermayer.de/index.php/2025/07/20/photo-of-the-week-summer-evening-sky/

Photo of the week: Summer evening sky
Bester Himmel.

Gender Inclusivity Fairness Index (GIFI): A Multilevel Framework for Evaluating Gender Diversity in Large Language Models
Zhengyang Shan, Emily Ruth Diana, Jiawei Zhou
https://arxiv.org/abs/2506.15568

Gender Inclusivity Fairness Index (GIFI): A Multilevel Framework for Evaluating Gender Diversity in Large Language Models
We present a comprehensive evaluation of gender fairness in large language models (LLMs), focusing on their ability to handle both binary and non-binary genders. While previous studies primarily focus on binary gender distinctions, we introduce the Gender Inclusivity Fairness Index (GIFI), a novel and comprehensive metric that quantifies the diverse gender inclusivity of LLMs. GIFI consists of a wide range of evaluations at different levels, from simply probing the model with respect to provide…

"Einsatzgebiete von Künstlicher Intelligenz in wissenschaftlichen Bibliotheken – Praxis und Perspektiven": Bachelor-Arbeit von Carina Pizzini an der TH Köln: https://publiscologne.th-koeln.de/frontdoor/index/index/docId/2678

A Severity-Aware Reliability Index for Risk-Informed Structural Design
Moussa Leblouba, Samer Barakat, Raghad Awad
https://arxiv.org/abs/2508.12068 https://

A Severity-Aware Reliability Index for Risk-Informed Structural Design
Classical measures of structural reliability, such as the probability of failure and the related reliability index, are still widely applied in practice. However, these measures are frequency-based only, and they do not give information about the severity of failure once it happens. This missing aspect can cause underestimation of risks, in particular when rare events produce very undesirable consequences. In this paper, a new reliability framework is proposed to address this issue. The framewo…

Coming soon (likely this afternoon, I’m writing tests and docs and updating examples as we speak)…
This is the sort of thing you’ll be able to do with Markdown pages. Just pop any arbitrary JavaScript you want in the new script block in the front matter and then import and use components as well as plain old JavaScript tagged template variable interpolation (not shown in this example) inside your Markdown.
The screen has all the code (sans the end of the last line of CSS and the…

Die englischsprachige Wikipedia hat einen neuen Schnelllöschgrund eingeführt: „LLM-generated pages without human review“. Damit können nun Artikel ohne längere Löschdiskussion sofort gelöscht werden, wenn aus dem Text eine Erstellung durch generative KI erkennbar wird oder die Belege unplausibel, klar halluziniert oder falsch zugeordnet sind. In der deutschsprachigen Wikipedia ist eine entsprechende Praxis bereits Konsens.

Automatic computation of the glycemic index: data driven analysis of the glucose standard
Fabio Credali, Maria Teresa Venuti, Daniele Boffi, Paola Rossi
https://arxiv.org/abs/2506.15471

Automatic computation of the glycemic index: data driven analysis of the glucose standard
The Glycemic Index (GI) is a tool for classifying carbohydrates based on their impact on postprandial glycemia, useful for diabetes prevention and management. This study applies a mathematical model for a data driven simulation of the glycemic response following glucose ingestion. The analysis reveals a direct correlation between glucose response profiles and parameters describing glucose absorption, enabling the classification of subjects into three groups based on the timing of their glycemic…

A look at Justin Sun's lawsuit against Bloomberg for publishing his holdings, which he claims he provided confidentially to qualify for its Billionaires Index (Molly White/Citation Needed)
https://www.citationneeded.news/justin-sun-bloomberg-lawsuit/

As he builds US power, Justin Sun fights to control his story
A crypto billionaire who once feared arrest in the US is now a Trump business adviser and White House guest. His lawsuit against Bloomberg reveals what he doesn't want Americans to know about his crypto fortune.

AI Governance InternationaL Evaluation Index (AGILE Index) 2025
Yi Zeng, Enmeng Lu, Xiaoyang Guo, Cunqing Huangfu, Jiawei Xie, Yu Chen, Zhengqi Wang, Dongqi Liang, Gongce Cao, Jin Wang, Zizhe Ruan, Xin Guan, Ammar Younas
https://arxiv.org/abs/2507.11546

AI Governance InternationaL Evaluation Index (AGILE Index) 2025
The year 2024 witnessed accelerated global AI governance advancements, marked by strengthened multilateral frameworks and proliferating national regulatory initiatives. This acceleration underscores an unprecedented need to systematically track governance progress--an imperative that drove the launch of the AI Governance InternationaL Evaluation Index (AGILE Index) project since 2023. The inaugural AGILE Index, released in February 2024 after assessing 14 countries, established an operational a…

#DH2025 listening to Taylor Marie Faires on UChicago’s Library and Emerging Technologies 2 day bootcamp-style Summer Camp - they had 'share out' sessions including 'scary stories' which allowed people to share their fears about technology

The R-index: A universal metric for evaluating OAM content and mode purity in optical fields
Monika Bahl, Georgios M. Koutentakis, Mikhail Maslov, Tom Jungnickel, Timo Gassen, Mikhail Lemeshko, Oliver H. Heckl
https://arxiv.org/abs/2508.12973

The R-index: A universal metric for evaluating OAM content and mode purity in optical fields
Despite its pivotal role in optical manipulation, high-capacity communications, and quantum information, a general measure of orbital angular momentum (OAM) in structured light remains elusive. In optical fields, where multiple vortices coexist, the local nature of vortex OAM and the absence of a common rotation axis make the total OAM of the field difficult to quantify. Here, we introduce the R-index, a metric that captures the intrinsic OAM content of any structured optical field, from pure L…

I just saw this site dedicated to BBS games & OMG all the ANSI & 80 line text made me squeee with delight.
✅ A-Net Online BBS
#GenX

Air Quality PM2.5 Index Prediction Model Based on CNN-LSTM
Zicheng Guo, Shuqi Wu, Meixing Zhu, He Guandi
https://arxiv.org/abs/2508.11215 https://arxiv.org…

Air Quality PM2.5 Index Prediction Model Based on CNN-LSTM
With the intensification of global climate change, accurate prediction of air quality indicators, especially PM2.5 concentration, has become increasingly important in fields such as environmental protection, public health, and urban management. To address this, we propose an air quality PM2.5 index prediction model based on a hybrid CNN-LSTM architecture. The model effectively combines Convolutional Neural Networks (CNN) for local spatial feature extraction and Long Short-Term Memory (LSTM) net…

On the off chance that the U.S. Government removes it from the web, this is the March 25, 2025 testimony of the U.S. Director of National Intelligence Tulsi Gabbard that Iran is _not_ currently developing nuclear weapons and it is at least 2 to 3 years from having a bomb ("breakout").
source:

Just six months after he regained power, in part by promising to rapidly reduce prices, Trump has presided over the chaotic rollout of tariffs on an array of overseas products that many have argued risk having the exact opposite effect.
After a lull, the consumer price index (CPI) is back on the rise. In June, everything from fruit and washing machines to dresses and toys became more expensive.
Businesses in the US and around the world have struggled to keep up with the Trump adm…

On $A$-Groups with the Same Index Set as a Nilpotent Group
Wei Zhou, Ilya Gorshkov
https://arxiv.org/abs/2506.15250 https://arxiv.org…

On $A$-Groups with the Same Index Set as a Nilpotent Group
Let $G$ be a finite group and $N(G)$ be the set of conjugacy class sizes of $G$. For a prime $p$, let $|G||_p$ be the highest $p$-power dividing some element of $N(G)$. and define $|G|| = Π_{p\in π(G)}|G||_p$. $G$ is said to be an $A$-group if all its Sylow subgroups are abelian. We prove that if $G$ is an $A$-group such that $N(G)$ contains $|G||_p$ for every $p\in π(G)$ as well as $|G||$, then $G$ must be abelian. T…

Exact results on the Bethe Ansatz evaluation of the SCI
Antonio Amariti, Pietro Glorioso
https://arxiv.org/abs/2506.15296 https://arx…

Exact results on the Bethe Ansatz evaluation of the SCI
We evaluate the superconformal index using the Bethe Ansatz (BA) approach for 4d $\mathcal{N}=1$ toric quiver gauge theories with a small amount of gauge groups. We restrict to $\mathrm{SU}(2)$ gauge factors and compare the results with the ones obtained by a direct evaluation of the index. The answer obtained from the BA approach using only discrete solutions for the BA equations does not always reproduce the direct evaluation result. A similar problem affects the case of $\mathrm{SU}(N)$ $\ma…

A look at Justin Sun's lawsuit against Bloomberg for publishing his holdings, which he claims he provided confidentially to qualify for its Billionaires Index (Molly White/Citation Needed)
https://www.citationneeded.news/justin-sun-bloomberg-lawsuit/

As he builds US power, Justin Sun fights to control his story
A crypto billionaire who once feared arrest in the US is now a Trump business adviser and White House guest. His lawsuit against Bloomberg reveals what he doesn't want Americans to know about his crypto fortune.

The relative index in coarse index theory and submanifold obstructions to uniform positive scalar curvature
Alexander Engel, Christopher Wulff
https://arxiv.org/abs/2506.14301

The relative index in coarse index theory and submanifold obstructions to uniform positive scalar curvature
We provide a coarse version of the relative index of Gromov and Lawson and thoroughly establish all of its basic properties. As an application, we discuss a general procedure to construct wrong way maps on the $K$-theory of the Roe algebra mapping the coarse index class of the Dirac operator of a manifold to the one of a suitably embedded submanifold of arbitrary codimension, thereby establishing an abstract machinery to find obstructions to uniform positive scalar curvature coming from these s…

Ich habe ein bisschen mit den Daten einer KAS-Studie zu Lebensstiltypen und Parteianhängerschaft rumgespielt und stelle fest, dass Deutschland doch bunter ist, als es manchmal den Anschein hat.
https://blog.till-westermayer.de/index.php/2025/06/19/politikpuzzle/…

#Orwell wrote about the #JustTransition in 1947 ("Toward European Unity"):
«The European peoples, and especially the British, have long owed their high standard of life to direct or indirect exploitation of the coloured peoples. [...] But it is by no means certain that we can afford these th…

The collected essays, journalism, and letters of George Orwell : Orwell, George, 1903-1950 : Free Download, Borrow, and Streaming : Internet Archive
Includes bibliographical references and index

Linkdump 29/2025 – #fundstücke

🇺🇦 #NowPlaying on KEXP's #VarietyMix
Harmony Index:
🎵 All Around
#HarmonyIndex
https://harmonyindexmp3.bandcamp.com/track/all-around
https://open.spotify.com/track/4wvlydtUZ2cp3rx9TXQEz0

Multiple-Mode Affine Frequency Division Multiplexing with Index Modulation
Guangyao Liu, Tianqi Mao, Yanqun Tang, Jingjing Zhao, Zhenyu Xiao
https://arxiv.org/abs/2507.13037

Multiple-Mode Affine Frequency Division Multiplexing with Index Modulation
Affine frequency division multiplexing (AFDM), a promising multicarrier technique utilizing chirp signals, has been envisioned as an effective solution for high-mobility communication scenarios. In this paper, we develop a multiple-mode index modulation scheme tailored for AFDM, termed as MM-AFDM-IM, which aims to further improve the spectral and energy efficiencies of AFDM. Specifically, multiple constellation alphabets are selected for different chirp-based subcarriers (chirps). Aside from cl…

Advanced DOA Regulation with a Whale-Optimized Fractional Order Fuzzy PID Framework
Lida Shahbandari, Hossein Mohseni
https://arxiv.org/abs/2508.12487 https://

Advanced DOA Regulation with a Whale-Optimized Fractional Order Fuzzy PID Framework
This study introduces a Fractional Order Fuzzy PID (FOFPID) controller that uses the Whale Optimization Algorithm (WOA) to manage the Bispectral Index (BIS), keeping it within the ideal range of forty to sixty. The FOFPID controller combines fuzzy logic for adapting to changes and fractional order dynamics for fine tuning. This allows it to adjust its control gains to handle a person's unique physiology. The WOA helps fine tune the controller's parameters, including the fractional orders and th…

Translationese-index: Using Likelihood Ratios for Graded and Generalizable Measurement of Translationese
Yikang Liu, Wanyang Zhang, Yiming Wang, Jialong Tang, Pei Zhang, Baosong Yang, Fei Huang, Rui Wang, Hai Hu
https://arxiv.org/abs/2507.12260

Translationese-index: Using Likelihood Ratios for Graded and Generalizable Measurement of Translationese
In this paper, we propose the first quantitative measure for translationese -- the translationese-index (T-index) for graded and generalizable measurement of translationese, computed from the likelihood ratios of two contrastively fine-tuned language models (LMs). We use a synthesized dataset and a dataset with translations in the wild to evaluate T-index's generalizability in cross-domain settings and its validity against human judgments. Our results show that T-index is both robust and effici…

The index of a pair of pure states and the interacting integer quantum Hall effect
Sven Bachmann, Jacob Shapiro, Cl\'ement Tauber
https://arxiv.org/abs/2507.10807

The index of a pair of pure states and the interacting integer quantum Hall effect
We introduce the index $\mathcal{N}(ω_1,ω_2)$ of a pair of pure states on a unital C*-algebra, which is a generalization of the notion of the index of a pair of projections on a Hilbert space. We then show that the Hall conductance associated with an invertible state $ω$ of a two-dimensional interacting electronic system which is symmetric under $U(1)$ charge transformation may be written as the index $\mathcal{N}(ω,ω_D)$, where $ω_D$ is obtained from $ω$ by inserting a unit of magnetic …

Strong list-chromatic index of subcubic graphs is at most 10
Yunfang Tang, Zhiwei Bi
https://arxiv.org/abs/2507.11927 https://arxiv.o…

Strong list-chromatic index of subcubic graphs is at most 10
A strong edge coloring of a graph $G$ is an assignment of colors to the edges of $G$ such that two distinct edges are colored differently if they are incident to a common edge or share an endpoint. The strong chromatic index of a graph $G$, denoted by $χ_{s}'(G)$, is the minimum number of colors needed for a strong edge coloring of $G$. The edge weight of a graph $G$ is defined to be $\max\limits_{uv\in E(G)}\{(d_G(u)+d_G(v))\}$. It was proved in Chen et al in 2020 that every graph with edge w…

Approximating the universal thermal climate index using sparse regression with orthogonal polynomials
Sabin Roman, Gregor Skok, Ljupco Todorovski, Saso Dzeroski
https://arxiv.org/abs/2508.11307

Approximating the universal thermal climate index using sparse regression with orthogonal polynomials
This article explores novel data-driven modeling approaches for analyzing and approximating the Universal Thermal Climate Index (UTCI), a physiologically-based metric integrating multiple atmospheric variables to assess thermal comfort. Given the nonlinear, multivariate structure of UTCI, we investigate symbolic and sparse regression techniques as tools for interpretable and efficient function approximation. In particular, we highlight the benefits of using orthogonal polynomial bases-such as L…

Empty rhetoric, weasel words, paltering, and unverified claims: the bullshit index of AI. Read on here: https://spectrum.ieee.org/ai-misinformation-llm-bullshit

AI Misinformation: The Bullshit Index Explained
Can AI models be trusted? Discover how a "bullshit index" measures their indifference to truth and what it means for users.

heise | Der breitgestreuteste Index der Welt: Wie der MSCI ACWI IMI abschneidet
Der MSCI ACWI IMI deckt weltweit mehr Unternehmen als alle anderen Indizes ab. Das soll die Rolle der US-Wirtschaft reduzieren – ohne große Renditeeinbußen.

Replaced article(s) found for stat.ML. https://arxiv.org/list/stat.ML/new
[1/2]:
- A Consistent and Scalable Algorithm for Best Subset Selection in Single Index Models
Borui Tang, Jin Zhu, Junxian Zhu, Xueqin Wang, Heping Zhang

Morse index, topological degree and local uniqueness of multi-spikes solutions to the Lane-Emden problem in dimension two
Isabella Ianni, Peng Luo, Shusen Yan
https://arxiv.org/abs/2506.12905

Morse index, topological degree and local uniqueness of multi-spikes solutions to the Lane-Emden problem in dimension two
We consider multi-spike positive solutions to the Lane-Emden problem in any bounded smooth planar domain and compute their Morse index, extending to the dimension $N=2$ classical theorems due to Bahri-Li-Rey (1995) and Rey (1999) when $N\geq 4$ and $N=3$, respectively. Furthermore, by deeply investigating their concentration behavior, we also derive the total topological degree. The Morse index and the degree counting formula yield a new local uniqueness result.

Vor Flickr: Wie wir unsere Bilder geteilt haben – https://www.deimeke.net/dirk/blog/index.php?/archives/4413-Vor-Flickr-Wie-wir-unsere-Bilder-geteilt-haben.html

EnhanceGraph: A Continuously Enhanced Graph-based Index for High-dimensional Approximate Nearest Neighbor Search
Xiaoyao Zhong, Jiabao Jin, Peng Cheng, Mingyu Yang, Lei Chen, Haoyang Li, Zhitao Shen, Xuemin Lin, Heng Tao Shen, Jingkuan Song
https://arxiv.org/abs/2506.13144

EnhanceGraph: A Continuously Enhanced Graph-based Index for High-dimensional Approximate Nearest Neighbor Search
Recently, Approximate Nearest Neighbor Search in high-dimensional vector spaces has garnered considerable attention due to the rapid advancement of deep learning techniques. We observed that a substantial amount of search and construction logs are generated throughout the lifespan of a graph-based index. However, these two types of valuable logs are not fully exploited due to the static nature of existing indexes. We present the EnhanceGraph framework, which integrates two types of logs into a …

Unitarity-Conserving Non-Minimally Coupled Inflation and the ACT Spectral Index
J. McDonald
https://arxiv.org/abs/2506.12916 https://…

Unitarity-Conserving Non-Minimally Coupled Inflation and the ACT Spectral Index
The Atacama Cosmology Telescope (ACT) collaboration has reported a scalar spectral index $ n_s~=~0.9743~\pm~0.0034 $. This is substantially larger than the classical prediction of non-minimally coupled inflation models such as Higgs Inflation, $n_s \approx 0.965$. Here we revisit the unitarity-conserving non-minimally coupled inflation model proposed in [1]. We show that when the inflaton is a complex non-minimally coupled gauge singlet scalar with additional interactions in the Jordan frame to…

Alphabet Index Mapping: Jailbreaking LLMs through Semantic Dissimilarity
Bilal Saleh Husain
https://arxiv.org/abs/2506.12685 https://…

Alphabet Index Mapping: Jailbreaking LLMs through Semantic Dissimilarity
Large Language Models (LLMs) have demonstrated remarkable capabilities, yet their susceptibility to adversarial attacks, particularly jailbreaking, poses significant safety and ethical concerns. While numerous jailbreak methods exist, many suffer from computational expense, high token usage, or complex decoding schemes. Liu et al. (2024) introduced FlipAttack, a black-box method that achieves high attack success rates (ASR) through simple prompt manipulation. This paper investigates the underly…

*hits blunt* "what if we put the HSM... on a rotor spinning fast enough that if you rotated in a chair that fast it would Kill you" https://tches.iacr.org/index.php/TCHES/article/view/9290/8856
(via @…

Bubbling saddles of the gravitational index
Davide Cassani, Alejandro Ruip\'erez, Enrico Turetta
https://arxiv.org/abs/2507.12650 https://

Bubbling saddles of the gravitational index
We consider the five-dimensional supergravity path integral that computes a supersymmetric index, and uncover a wealth of semiclassical saddles with bubbling topology. These are complex finite-temperature configurations asymptotic to $S^1\times\mathbb{R}^4$, solving the supersymmetry equations. We assume a ${\rm U}(1)^3$ symmetry given by the thermal isometry and two rotations, and present a general construction based on a rod structure specifying the fixed loci of the ${\rm U}(1)$ isometries a…

Citizen science illuminates the nature of city lights: #LightPollution

Detection of over 37,000 giant pulses per hour from PSR J1823$-$3021A with UHF baseband observations from MeerKAT
Simon C. -C. Ho, Matthew Bailes, Chris Flynn, Federico Abbate
https://arxiv.org/abs/2506.14887

Detection of over 37,000 giant pulses per hour from PSR J1823$-$3021A with UHF baseband observations from MeerKAT
Giant pulses (GPs) occur in high magnetic-field millisecond pulsars (MSPs) and young Crab-like pulsars. Motivated by the fast radio bursts (FRBs) discovered in a globular cluster (GC) in the M81, we undertook baseband observations of PSR J1823$-$3021A, the most active GP emitter in a GC with the MeerKAT UHF band receiver (544-1088 MHz). The steep spectral index of the pulsar yields a GP rate of over 37,000 GPs/hr with $S/N>7$, significantly higher than the 3000 GPs/hr rate detected by Abbate et…

Enhanced vibrational optical activity by near-zero index chiral effective media
Ashis Paul, Matteo Venturi, Raju Adhikary, Giovanna Salvitti, Andrea Toma, Francesco Di Stasio, Hatice Altug, Paola Benassi, Davide Tedeschi, Carino Ferrante, Andrea Marini
https://arxiv.org/abs/2506.15592

Enhanced vibrational optical activity by near-zero index chiral effective media
The enhancement of the inherently weak optical activity of solvated molecules by superchiral fields, crucial for detecting their chirality, is a research frontier of photonics and the basis of novel chiroptical detection schemes. Here, we show that an effective medium consisting of randomly dispersed metal-based nanoparticles embedded within an optically active solvated drug (aqueous reparixin) can enhance vibrational optical rotation and circular dichroism thanks to superchirality produced by …

A Monotonicity-Based Regularization Approach to Shape Reconstruction for the Helmholtz Equation
Sarah Eberle-Blick, Bastian Harrach, Xianchao Wang
https://arxiv.org/abs/2508.11439

A Monotonicity-Based Regularization Approach to Shape Reconstruction for the Helmholtz Equation
We consider an inverse boundary value problem for determining unknown scatterers, which is governed by the Helmholtz equation in a bounded domain. To address this, we develop a novel convex data-fitting formulation that is capable of reconstructing the shape of the unknown scatterers.Our formulation is based on a monotonicity relation between the scattering index and boundary measurements. We use this relation to obtain a pixel-wise constraint on the unknown scattering index, and then minimize …

Factcheck: Trump’s climate report includes more than 100 false or misleading claims.
Look for the orange bar which hides a drop-down menu to navigate this extensive critique by actual climate experts (unlike the 'PhDs' who prepared the Trump regime's report).
https://interactive.carbonbrief.…

Factcheck: Trump’s climate report includes more than 100 false or misleading claims

Ecosia und Qwant starten Web-Suche über europäischen Index https://www.heise.de/news/Ecosia-und-Qwant-starten-Web-Suche-ueber-europaeischen-Index-10513424.html?wt_mc=rss.red.ho.ho.rdf.beitrag.beitrag

A small diary, developed by @…
https://journal-demo.kevquirk.com/index.php
Makes quite a good impression

The Grorthendieck group of an extriangulated category
Li Wang
https://arxiv.org/abs/2508.12545 https://arxiv.org/pdf/2508.12545

The Grorthendieck group of an extriangulated category
In this paper, we investigate the split Grothendieck group $K^{\rm sp}_{0}(\mathcal{M})$ of a $d$-rigid subcategory $\mathcal{M}$ in an extriangulated category $\mathscr{C}$. As applications, we prove the following results: (1) If $\mathcal{M}$ is a silting subcategory, then the Grothendieck group $K_{0}(\mathscr{C})$ is isomorphic to $K_{0}^{\rm sp}(\mathcal{M})$; (2) If $\mathcal{M}$ is a $d$-cluster tilting subcategory, then $K_{0}(\mathscr{C})$ is isomorphic to the index Grothendieck group …

Greater Manchester Pension Fund has a rhetoric about net zero. It has increased its investments in coal.
GMPF goes for Coal! – FossilFreeGM.org.uk https://www.fossilfreegm.org.uk/index.php/2025/08/11/gmpf-goes-for-coal/

"Podcasts als digitales Medium in der #Wissenschaftskommunikation zur Vermittlung von #Informationskompetenz in Wissenschaftlichen #Bibliotheken": B…

wow this sucks. happy everyone is safe.
#nwsl

There are frameworks like {golem} and {rhino} to make shiny development more robust, but I like the concept of {shinytest2} in providing a testing framework for pure shiny. https://rstudio.github.io/shinytest2/index.html

Imaginary part of the conductivity using Kramers-Kronig relations
Jean-Christophe Pain, Mikael Tacu
https://arxiv.org/abs/2506.14941 https://

Imaginary part of the conductivity using Kramers-Kronig relations
In order to obtain the frequency-dependent photo-absorption in a plasma, both the real and imaginary parts of the AC conductivity are required. The real part can be deduced from the knowledge of the static conductivity (given by the Ziman-Evans formula for instance) and the Drude model. The imaginary part, required for the refraction index, can be obtained using the Kramers-Kronig relations. Usually, it is obtained by complex integration in the complex plane of the usual Kramers-Kronig relation…

Network evolution analysis: a usage-centric approach applied on cycling infrastructure
https://josis.org/index.php/josis/article/view/379

I've got a new article on loans made by an Indigenous (Wendat) family to their settler neighbors in the 19th c. Among other things, it looks at credit in the countryside, Indigenous interactions with banking and capitalism, Catholicism and usury, and notarial archives (they're the best).
Paywalled, but I know a guy.
"The Vincent-Picard Family’s Investments: Wendat Wealth and Notarized Contracts in the Mid-Nineteenth Century"

The Gittins Index: A Design Principle for Decision-Making Under Uncertainty
Ziv Scully, Alexander Terenin
https://arxiv.org/abs/2506.10872 https://

The Gittins Index: A Design Principle for Decision-Making Under Uncertainty
The Gittins index is a tool that optimally solves a variety of decision-making problems involving uncertainty, including multi-armed bandit problems, minimizing mean latency in queues, and search problems like the Pandora's box model. However, despite the above examples and later extensions thereof, the space of problems that the Gittins index can solve perfectly optimally is limited, and its definition is rather subtle compared to those of other multi-armed bandit algorithms. As a result, the …

Dziś dowiedziałem się, że nazywanie chrześcijańskiego Boga "wszechmogącym" to błąd w tłumaczeniu.
https://thomasjayoord.com/index.php/blog/archives/the-mistranslation-of-pantokrater-as-omnipotent

Eat your own KR: a KR-based approach to index Semantic Web Endpoints and Knowledge Graphs
Pierre Maillot (WIMMICS), Catherine Faron (UniCA, I3S, WIMMICS), Fabien Gandon (WIMMICS), Franck Michel (Laboratoire I3S - SPARKS, WIMMICS), Pierre Monnin (WIMMICS)
https://arxiv.org/abs/2508.08713

Eat your own KR: a KR-based approach to index Semantic Web Endpoints and Knowledge Graphs
Over the last decade, knowledge graphs have multiplied, grown, and evolved on the World Wide Web, and the advent of new standards, vocabularies, and application domains has accelerated this trend. IndeGx is a framework leveraging an extensible base of rules to index the content of KGs and the capacities of their SPARQL endpoints. In this article, we show how knowledge representation (KR) and reasoning methods and techniques can be used in a reflexive manner to index and characterize existing kn…

Two cool projects I learned about at @…'s #TDF4 ( https://tdf.cttue.de/en/index.html ) du…

Ecosia und Qwant starten Web-Suche über europäischen Index
Die beiden europäischen Suchmaschinenanbieter nutzen für ihre Websuche schrittweise einen eigenen Suchmaschinenindex. Der soll auch der KI-Entwicklung dienen.

Optimal Portfolio Construction -- A Reinforcement Learning Embedded Bayesian Hierarchical Risk Parity (RL-BHRP) Approach
Shaofeng Kang, Zeying Tian
https://arxiv.org/abs/2508.11856

Optimal Portfolio Construction -- A Reinforcement Learning Embedded Bayesian Hierarchical Risk Parity (RL-BHRP) Approach
We propose a two-level, learning-based portfolio method (RL-BHRP) that spreads risk across sectors and stocks, and adjusts exposures as market conditions change. Using U.S. Equities from 2012 to mid-2025, we design the model using 2012 to 2019 data, and evaluate it out-of-sample from 2020 to 2025 against a sector index built from exchange-traded funds and a static risk-balanced portfolio. Over the test window, the adaptive portfolio compounds wealth by approximately 120 percent, compared with 1…

Stanford HAI 's 2025 AI Index Report https://hai.stanford.edu/ai-index/2025-ai-index-report
'Model scale continues to grow rapidly—training compute doubles every five months, datasets every eight, and power use annually' but AI models still 'often…

Maximal Speed of Glucose Change Significantly Distinguishes Prediabetes from Diabetes
Dandan Wang, Xiaoyan Chen, Jingxiang Lin, Teng Zhang, Lianyi Huang, Dongliang Leng, Xiaohua Douglas Zhang, Gang Li
https://arxiv.org/abs/2506.12567

Maximal Speed of Glucose Change Significantly Distinguishes Prediabetes from Diabetes
Rapid changes in blood glucose levels can have severe and immediate health consequences, leading to the need to develop indices for assessing these rapid changes based on continuous glucose monitoring (CGM) data. We proposed a CGM index, maxSpeed, that represents the maximum of speed of glucose change (SGC) in a subject, respectively, and conducted a clinical study to investigate this index along with SGC mean (meanSpeed) and SGC standard deviation (sdSpeed), coefficient of variation (CV), stan…

@… notestockなら、このページですね
https://notestock.osa-p.net/index.html…

#FotoDerWoche - mein Blog sendet einen Gruß aus dem Garten, während ich in Kopenhagen weile.
https://blog.till-westermayer.de/index.php/2025/08/16/12534/

Photo of the week: August garden: onion flower - II
Ein bisschen im Garten rumfotografiert - und festgestellt, dass es doch nach wie vor einen großen Unterschied gibt zwischen den iPhone-Photos (bei mir: iPhone 13 Mini) und Fotos mit der "richtigen" Kamera, also einer Canon DSLR. Sollte häufiger mal wieder zu dieser greifen, denke ich.

The large $N$ factorization does not hold for arbitrary multi-trace observables in random tensors
Razvan Gurau, Felix Joos, Benjamin Sudakov
https://arxiv.org/abs/2506.15362

The large $N$ factorization does not hold for arbitrary multi-trace observables in random tensors
We consider real tensors of order $D$, that is $D$-dimensional arrays of real numbers $T_{a^1a^2 \dots a^D}$, where each index $a^c$ can take $N$ values. The tensor entries $T_{a^1a^2 \dots a^D}$ have no symmetry properties under permutations of the indices. The invariant polynomials built out of the tensor entries are called trace invariants. We prove that for a Gaussian random tensor with $D\ge 3$ indices (that is such that the entries $T_{a^1a^2 \dots a^D}$ are independent identically dist…

#TIL: der #podcast "open science talk" ist umgezogen: https://septentrio.uit.no/index.php/OS

Single Index Bandits: Generalized Linear Contextual Bandits with Unknown Reward Functions
Yue Kang, Mingshuo Liu, Bongsoo Yi, Jing Lyu, Zhi Zhang, Doudou Zhou, Yao Li
https://arxiv.org/abs/2506.12751

Single Index Bandits: Generalized Linear Contextual Bandits with Unknown Reward Functions
Generalized linear bandits have been extensively studied due to their broad applicability in real-world online decision-making problems. However, these methods typically assume that the expected reward function is known to the users, an assumption that is often unrealistic in practice. Misspecification of this link function can lead to the failure of all existing algorithms. In this work, we address this critical limitation by introducing a new problem of generalized linear bandits with unknown…

On Modular maximal-cyclic braces
Arpan Das, Arpan Kanrar
https://arxiv.org/abs/2508.11776 https://arxiv.org/pdf/2508.11776…

On Modular maximal-cyclic braces
Inspired by a conjecture by Guarnieri and Vendramin concerning the number of braces with a generalized quaternion adjoint group, many researchers have studied braces whose adjoint group is a non-abelian $2$-group with a cyclic subgroup of index $2$. Following this direction, braces with generalized quaternion, dihedral, and semidihedral adjoint groups have been classified. It was found that the number of such braces stabilizes as the group order increases. In this paper, we consider the remaini…

Environmental extreme risk modeling via sub-sampling block maxima
Tuoyuan Cheng, Xiao Peng, Achmad Choiruddin, Xiaogang He, Kan Chen
https://arxiv.org/abs/2506.14556

Environmental extreme risk modeling via sub-sampling block maxima
This paper introduces a novel sub-sampling block maxima technique to model and characterize environmental extreme risks. We examine the relationships between block size and block maxima statistics derived from the Gaussian and generalized Pareto distributions. We introduce a weighted least square estimator for extreme value index (EVI) and evaluate its performance using simulated auto-correlated data. We employ the second moment of block maxima for plateau finding in EVI and extremal index (EI)…

Index from a point
Monica Jinwoo Kang, Craig Lawrie, Jaewon Song
https://arxiv.org/abs/2507.12510 https://arxiv.org/pdf/2507.12510

Index from a point
We propose an algebro-geometric interpretation of the Schur and Macdonald indices of four-dimensional $\mathcal{N}=2$ superconformal field theories (SCFTs). We conjecture that there exists an affine scheme $X$ such that the Hilbert series of the (appropriately-graded) arc space of its polynomial ring $J_\infty(\mathbb{C}[X])$ encodes the indices. Distinct local descriptions of a (singular) point correspond to distinct choices of $X$, giving rise to a family of $\mathcal{N}=2$ SCFTs each without…

Study of a giant Large Magellanic Cloud Supernova Remnant, Veliki (J0450.4-7050)
Z. J. Smeaton, M. D. Filipovi\'c, R. Z. E. Alsaberi, B. Arbutina, W. D. Cotton, E. J. Crawford, A. M. Hopkins, R. Kothes, D. Leahy, J. L. Payne, N. Rajabpour, H. Sano, M. Sasaki, D. Uro\v{s}evi\'c, J. Th. van Loon
https://arxiv.org/abs/2506.…

Study of a giant Large Magellanic Cloud Supernova Remnant, Veliki (J0450.4-7050)
We present a high-resolution radio-continuum view and a multi-frequency analysis of the Large Magellanic Cloud (LMC) Supernova Remnant (SNR) J0450.4-7050, which we give the nickname Veliki. These high-resolution observations reveal a larger extent than previously measured, making J0450.4-7050 one of the largest SNRs that we know of. Additionally, we observe a higher than expected radio surface brightness and an unusually flat spectral index ($α= -0.26 \pm 0.02$), with little spectral variation…

On connected graphs with finite spectral redundancy index and Pythagorean triplets
Pawan Kumar, S. Pirzada, S. Merajuddin
https://arxiv.org/abs/2507.11555 …

On connected graphs with finite spectral redundancy index and Pythagorean triplets
This article investigates spectral redundancy, a concept initially introduced by Alberto Seeger. Spectral redundancy arises when different connected induced subgraphs of a graph share the same spectral radius in their adjacency spectrum. Let \(b(G)\) denote the total number of non-isomorphic induced subgraphs of \(G\), and \(c(G)\) represents the cardinality of the set of spectral radius of all connected induced subgraphs of \(G\). The spectral redundancy of a graph \( G \) is defined as the ra…

Dielectric scattering resonances for high-refractive resonators with cubic nonlinearity
Habib Ammari, Bowen Li
https://arxiv.org/abs/2508.12364 https://arx…

Dielectric scattering resonances for high-refractive resonators with cubic nonlinearity
This work establishes a rigorous mathematical framework for the analysis of nonlinear dielectric resonances in wave scattering by high-index resonators with Kerr-type nonlinearities. We consider both two- and three-dimensional settings and prove the existence of nonlinear dielectric resonances in the subwavelength regime, bifurcating from the zero solution at the corresponding linear resonances. Furthermore, we derive asymptotic expansions for the nonlinear resonances and states in terms of the…

Affine Frequency Division Multiplexing with Subcarrier Power-Level Index Modulation for Integrated Sensing and Communications
Murat Temiz, Christos Masouros
https://arxiv.org/abs/2508.10783

Affine Frequency Division Multiplexing with Subcarrier Power-Level Index Modulation for Integrated Sensing and Communications
This study proposes an index modulation (IM) technique for affine frequency division multiplexing (AFDM) signals and examines its communication and sensing performance toward integrated sensing and communication (ISAC) systems. The power levels of subcarriers are utilized as modulation indices while also transmitting data symbols within each subcarrier. Thus, the proposed AFDM with subcarrier power-level index modulation (AFDM-PLIM) maintains all subcarriers active at all times to achieve a hig…

Datadog is joining the S&P 500, replacing Juniper Networks after HPE acquired Juniper, before trading on July 9; DDOG jumps 10% after hours (Jordan Novet/CNBC)
https://www.cnbc.com/2025/07/02/datadog-stock-jumps-sp-500-index-inclusion.html

Datadog stock jumps 10% on tech company’s inclusion in S&P 500 index
Hewlett Packard Enterprise's closing of its Juniper deal created an opening in the index, which has added several technology companies in recent months.

Missing interstellar sulfur in inventories of polysulfanes and molecular #octasulfur crowns: https://www.nature.com/articles/s41467-025-61259-2 -> Chemists Help Solve Mystery of Missing Space Sulfur: https://olemiss.edu/news/2025/08/chemists-help-solve-mystery-of-missing-space-sulfur/index.html - new research could create road map to outer space element.

– #blogwochen2025

Infini-gram mini: Exact n-gram Search at the Internet Scale with FM-Index
Hao Xu, Jiacheng Liu, Yejin Choi, Noah A. Smith, Hannaneh Hajishirzi
https://arxiv.org/abs/2506.12229

Infini-gram mini: Exact n-gram Search at the Internet Scale with FM-Index
Language models are trained mainly on massive text data from the Internet, and it becomes increasingly important to understand this data source. Exact-match search engines enable searching in large text corpora -- counting string appearances and retrieving the enclosing documents -- yet the high storage overhead hinders their application on Internet-scale data. We present Infini-gram mini, an efficient and scalable system that can make petabyte-level text corpora searchable. Based on the FM-ind…

Permutation-Avoiding FFT-Based Convolution
Nicolas Venkovic, Hartwig Anzt
https://arxiv.org/abs/2506.12718 https://arxiv.org/pdf/2506…

Permutation-Avoiding FFT-Based Convolution
Fast Fourier Transform (FFT) libraries are widely used for evaluating discrete convolutions. Most FFT implementations follow some variant of the Cooley-Tukey framework, in which the transform is decomposed into butterfly operations and index-reversal permutations. While butterfly operations dominate the floating-point operation count, the memory access patterns induced by index-reversal permutations significantly degrade the FFT's arithmetic intensity. In practice, discrete convolutions are oft…

🇺🇦 #NowPlaying on KEXP's #SeekAndDestroy
Misery Index:
🎵 Ruling Class Cancelled
#MiseryIndex
https://miseryindex.bandcamp.com/track/ruling-class-cancelled
https://open.spotify.com/track/0jmwVdHB2Z4Z3jioel5COn

Generalized Schur partition functions and RG flows
Anirudh Deb, Shlomo S. Razamat
https://arxiv.org/abs/2506.13764 https://arxiv.org/…

Generalized Schur partition functions and RG flows
We revisit a double-scaled limit of the superconformal index of ${\cal N}=2$ superconformal field theories (SCFTs) which generalizes the Schur index. The resulting partition function, $\hat {\cal Z}(q,α)$, has a standard $q$-expansion with coefficients depending on a continuous parameter $α$. The Schur index is a special case with $α=1$. Through explicit computations we argue that this partition function is an invariant of certain mass deformations and vacuum expectation value (vev) deformat…

Linkdump 33/2025 – #fundstücke

#FotoDerWoche vom Betriebsausflug in meine Geburtsstadt Tübingen. Oder: wie Wimmelbücher Erinnerungen prägen.
https://blog.till-westermayer.de/index.php/2…

Photo of the week: Tübingen
Der Betriebsausflug der Landtagsfraktion ging dieses Jahr nach Tübingen. Gleich am Bahnhof augenfällig: Radinfrastruktur, das gut ausgebaute Bus-System (eine Straßenbahn wurde abgelehnt ...), kurz dahinter dann: Abkühlbrunnen und Vernebelungsanlagen. Im Rathaus eine Ausstellung zur Energieeffizienz.

Seeing through randomness with topological light
Cade Peters, Kelsey Everts, Tatjana Kleine, Pedro Ornelas, Andrew Forbes
https://arxiv.org/abs/2508.12305 https://

Seeing through randomness with topological light
Transmitting structured light robustly through complex random media is crucial in many applications, from sensing to communication. Unfortunately, the spatial structure of light is distorted in such media due to refractive index inhomogeneities that cause multiple scattering, requiring mitigating strategies such as iterative optimisation and adaptive optics. Here, we use topological light to see through random media without the need for any corrective measures. Using skyrmions as our optical to…

Diminished Sombor index and its relationship with topological indices
F. Movahedi
https://arxiv.org/abs/2508.06532 https://arxiv.org/pdf/2508.06532

Diminished Sombor index and its relationship with topological indices
In this paper, we investigate the Diminished Sombor index (DSO), a recently introduced degree-based topological index for a simple graph $G$, defined as \[ DSO(G) = \sum_{uv \in E} \frac{\sqrt{d_u^2+d_v^2}}{d_u+d_v}, \] where $d_u$ denotes the degree of a vertex $u \in V$. We establish several sharp bounds for this index in terms of classical topological indices such as the Zagreb, Albertson, Harmonic, Randić, and geometric-arithmetic indices. The relationships and inequalities between DSO and…

O.k. four more slides by Eduard Masana at the Leuven SEC about the 2026 Total #SolarEclipse in Spain, namely what the Comisión Nacional del Eclipse is preparing: see https://www.iaa.csic.es/page/comision-nacional-eclipse and https://eclipses.ign.es and https://eclipse-spain.es/index.php/en/ for relevant websites. And some Final Thoughts and Recommendations about the expected eclipse experience in Spain. 13/n

"Linkding – Bookmark-Manager nach dem Ende von Pocket nutzen" https://digital-cleaning.de/index.php/linkding-bookmark-manager-nach-dem-ende-von-pocket-nutzen/

Mit etwas Abstand mal aufgeschrieben, warum mich das Handeln der CDU/CSU-Fraktion unter Spahn am Freitag aufgeschreckt hat.
https://blog.till-westermayer.de/index.php/2025/07/13/das-spahn-disaster/

Das Spahn-Disaster
Jens Spahn ist Fraktionsvorsitzender der CDU/CSU im Bundestag. So unschön das auch aus demokratietheoretischer Perspektive (freies Mandat usw.) ist: eine der zentralen Aufgaben eines Fraktionsvorsitzenden besteht darin, Mehrheiten zu organisieren. Nach den Ereignissen vom Freitag bin ich mir nicht s

Linkdump 24/2025 – #fundstücke

#FotoDerWoche mit Vollmond.
https://blog.till-westermayer.de/index.php/2025/07/12/photo-of-the-week-summer-moon/

Photo of the week: Summer moon
Nur der Vollmond Anfang Juni, in diesem Sommer groß und gelblich leuchtend, und auch wenn das zu einem guten Teil optische Täuschung ist, doch immer einen Blick wert.

Für die Samstagsnachmittagscrew nochmal der Link auf meine SF-/F-Lektüre aus dem Juni 2025 ... das eine oder andere wäre vielleicht auch als Urlaubslektüre geeignet.
https://blog.till-westermayer.de/index.php/2025/07/08/science-fic…

Science Fiction und Fantasy im Juni (und z.T. Juli) 2025
Eigentlich hatte ich mir vorgenommen, mir noch weitere Texte für den Hugo anzugucken und einen etwas differenzierteren Stimmzettel abzugeben. Heruntergeladen habe ich das Hugo-Voting-Paket schon mal, und bis zur finalen Abstimmung am 23. Juli ist eigentlich auch noch etwas Zeit. We will see. Bei der

Zurück zu Logseq – #plattformübergreifend …

Deformed Schur Indices of BCD-type for N=4 Super Yang-Mills and Symmetric Functions
Gao-fu Ren, Min-xin Huang
https://arxiv.org/abs/2507.11315 https://

Deformed Schur Indices of BCD-type for N=4 Super Yang-Mills and Symmetric Functions
We investigate the deformed Schur index in four dimensional N=4 super Yang-Mills theories with $SO$ and $Sp$ gauge groups, generalizing Hatsuda's recent calculations. We express the deformed Schur index as integrals of Koornwinder polynomials and Macdonald polynomials, then perform the integrals in terms of the normalization constants of Macdonald polynomials. We provide explicit results for some low rank gauge groups and for expansion in a $u$ parameter. We discuss various special limits and t…

Linkdump 28/2025 – #fundstücke

#FotoDerWoche mit Gurkententakel.
https://blog.till-westermayer.de/index.php/2025/08/09/photo-of-the-week-cucumber-vine/

Photo of the week: Cucumber vine
Etwas durchwachsen sind meine Erfahrungen mit dem Versuch, Gurken auf dem Balkon zu ernten. In der Voranzucht wuchsen letztlich nur zwei oder drei Pflänzchen, zwei davon wurden - auf dem Balkon! - von einer Schnecke gefressen. Die letzte Pflanze entwickelte sich dafür im großen Kasten prächtig, brac

25 Jahre Medienwandel – Das Blog als Konstante? – https://www.deimeke.net/dirk/blog/index.php?/archives/4420-25-Jahre-Medienwandel-Das-Blog-als-Konstante.html

Linkdump 32/2025 – #fundstücke

Mein schönstes selbstgemachtes Bild – Ein Blick zurück – https://www.deimeke.net/dirk/blog/index.php?/archives/4411-Mein-schoenstes-selbstgemachtes-Bild-Ein-Blick-zurueck.html