Tootfinder

Just need someone to listen? This guy's for you!
#uplifting…

The cowboys have a way of trussing up a steer or a pugnacious bronco
which fixes the brute so that it can neither move nor think. This is the
hog-tie, and it is what Euclid did to geometry.
-- Eric Temple Bell, In R Crayshaw-Williams The Search
For Truth, p. 191.

The presentations at the 2nd #AAS246 presser were about the papers https://iopscience.iop.org/article/10.3847/2041-8213/adc911 (Discovery of the Seven-ring Polycyclic Aromatic Hydrocarbon Cyanocoronene (C24H11CN) in GOTHAM Observations of TMC-1, also https://public.nrao.edu/news/cosmic-chemistry-breakthrough-largest-aromatic-molecule-found-in-deep-space/), https://arxiv.org/abs/2506.05575 (A map of the outer gas disk of the Galaxy with direct distances from young stars, also https://www.uah.edu/news/items/uah-researcher-unveils-new-map-of-milky-way-galaxy-in-atomic-hydrogen-revealing-its-clumped-flocculent-nature-for-first-time) and https://iopscience.iop.org/article/10.3847/1538-4357/adbbd9 (Surveying the Giant H ii Regions of the Milky Way with SOFIA. VII. Galactic Center Regions Sgr B1, Sgr B2, and Sgr C, also https://www.seti.org/press-release/unusual-stellar-nurseries-near-our-galaxys-center-puzzle-scientists) plus two results with apparently neither papers nor press releases going with them.

Learning The Minimum Action Distance
Lorenzo Steccanella, Joshua B. Evans, \"Ozg\"ur \c{S}im\c{s}ek, Anders Jonsson
https://arxiv.org/abs/2506.09276

Learning The Minimum Action Distance
This paper presents a state representation framework for Markov decision processes (MDPs) that can be learned solely from state trajectories, requiring neither reward signals nor the actions executed by the agent. We propose learning the minimum action distance (MAD), defined as the minimum number of actions required to transition between states, as a fundamental metric that captures the underlying structure of an environment. MAD naturally enables critical downstream tasks such as goal-conditi…

This, too, can be done. (One third of the maple syrup is totally fine, and far less oil is needed than specified.) And extremely bone-healthy! #nommention
https:…

Lemon-Miso Tofu With Broccoli Recipe (Gift Recipe)
Inspired by Cantonese-style lemon chicken, this vegetarian version features crispy tofu and broccoli coated in a citrusy sweet and savory sauce. This lemon sauce is neither overly sweet nor tart, but has a soft umami hum thanks to the addition of miso paste. The simple technique of dusting the tofu with cornstarch before pan-frying delivers crispy tofu that is light yet robust enough to carry the sauce. (The tofu and broccoli can also be cooked in an air-fryer with comparable results; see Tip f…

I have a new job, I'm happy I have this job because it's a good job for a good company.
So I should be generally happy, shouldn't I?
Unfortunately I'm not - not as happy as I would like to be - due to everything else going on (my father, *waves frantically* fascism and war and ecocide), so I resort to buying stuff.
Namely, a refurbished coffee grinder and a second-hand Casio watch.
Neither is trackable yet for some DHL reason.
I hate everything.

Hochschild Cohomology of Isotropic Grassmannians
Anton Fonarev
https://arxiv.org/abs/2506.09727 https://arxiv.org/pdf/2506.09727

Hochschild Cohomology of Isotropic Grassmannians
We prove that nonspecial isotropic Grassmannians (that is, all isotropic Grassmannians which are neither (co)adjoint nor (co)minuscule, except $\mathsf{OGr}(n-1, 2n+1)$ for $n\geq 4$), are not Hochschild global, thus establishing a conjecture by P. Belmans and M. Smirnov. As a corollary, we conclude that Bott vanishing fails for all these varieties.

I am no better and neither are you
We are the same, whatever we do
You love me, you hate me, you know me and then
You can't figure out the bag I'm in <-- #SlyAndTheFamilyStoneForEvah :-) https://yout…

When your function expects a path fragment string as a parameter, you MUST specify, explicitly, if it should have a leading, trailing, or neither forward slash.
If you do not say *explicitly in the docblock of that exact function/method*, then you are wrong and your code is wrong and I will curse your name every time I am forced to use your broken code.
#Programming

TGRPO :Fine-tuning Vision-Language-Action Model via Trajectory-wise Group Relative Policy Optimization
Zengjue Chen, Runliang Niu, He Kong, Qi Wang
https://arxiv.org/abs/2506.08440

TGRPO :Fine-tuning Vision-Language-Action Model via Trajectory-wise Group Relative Policy Optimization
Recent advances in Vision-Language-Action (VLA) model have demonstrated strong generalization capabilities across diverse scenes, tasks, and robotic platforms when pretrained at large-scale datasets. However, these models still require task-specific fine-tuning in novel environments, a process that relies almost exclusively on supervised fine-tuning (SFT) using static trajectory datasets. Such approaches neither allow robot to interact with environment nor do they leverage feedback from live ex…

This https://arxiv.org/abs/2409.03567 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Meshless moment-free quadrature formulas arising from numerical differentiation
We suggest a method for simultaneously generating high order quadrature weights for integrals over Lipschitz domains and their boundaries that requires neither meshing nor moment computation. The weights are determined on pre-defined scattered nodes as a minimum norm solution of a sparse underdetermined linear system arising from a discretization of a suitable boundary value problem by either collocation or meshless finite differences. The method is easy to implement independently of the domain…

I don’t agree in one respect:
Neither OOP nor FP (nor 4GLs nor IDEs nor SOAs nor any of the other new hotnesses past) had anything remotely resembling the current money behind them. None led to companies speculatively laying off tens of thousands of employees for imagined productivity boosts that had not actually arrived yet. None shaped whole election cycles, or led to national proposals for preemptive deregulation. None led to the construction of nuclear power plants or the draining of rivers. None sent oligarchs or fascists into spasmodic wet dreams of world domination. None started quasi-religious cults like EA.
All •that• is the part that feels like blockchain — but even worse, if such a thing is possible.
@…
2/2

This https://arxiv.org/abs/2406.06095 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csMS_…

An extension of C++ with memory-centric specifications for HPC to reduce memory footprints and streamline MPI development
The C++ programming language and its cousins lean towards a memory-inefficient storage of structs: The compiler inserts helper bits such that individual instance variables fit to byte or cache boundaries, while it is not able to exploit knowledge about the range of integers, enums or bitsets. Furthermore, the language provides neither support for data exchange via MPI nor for arbitrary floating-point precisions. We propose C++ attributes through which developers can guide the compiler what memo…

I didn't see this coming... and neither did the Italians.
#soccer #football

This https://arxiv.org/abs/2412.16465 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Wheel-like bricks and minimal matching covered graphs
A connected graph G with at least two vertices is matching covered if each of its edges lies in a perfect matching. We say that an edge e in a matching covered graph G is removable if G-e is matching covered. A pair {e; f} of edges of a matching covered graph G is a removable doubleton if G-e-f is matching covered, but neither G-e nor G-f is. Removable edges and removable doubletons are called removable classes, introduced by Lovasz and Plummer in connection with ear decompositions of matching …

Kicker Daniel Carlson and punter AJ Cole put best feet forward for Raiders https://www.foxsports.com/articles/nfl/kicker-daniel-carlson-and-punter-aj-cole-put-best-feet-forward-for-raiders

Buzz from Jaguars OTAs: Why Travis Etienne may be a sneaky Fantasy Football sleeper in 2025

https://www.cbssports.com/fantasy/football

This https://arxiv.org/abs/2307.01916 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Maximizing Seaweed Growth on Autonomous Farms: A Dynamic Programming Approach for Underactuated Systems Navigating on Uncertain Ocean Currents
Seaweed biomass presents a substantial opportunity for climate mitigation, yet to realize its potential, farming must be expanded to the vast open oceans. However, in the open ocean neither anchored farming nor floating farms with powerful engines are economically viable. Thus, a potential solution are farms that operate by going with the flow, utilizing minimal propulsion to strategically leverage beneficial ocean currents. In this work, we focus on low-power autonomous seaweed farms and desig…

Can we just dispense with grades already? Universities' rush to adopt LLMs, including providing students free access to more advanced versions, has made whatever grades we give wholly suspect (I wouldn't trust a transcript if I was hiring our students). At the same time, my institution at least has given instructors neither guidance nor support in dealing with the fallout. I am more than happy to teach those who want to learn. If the others want to spend their time querying an AI, so…

This https://arxiv.org/abs/2502.02959 has been replaced.
initial toot: https://mastoxiv.page/@…

Observation of slow relaxation due to Hilbert space fragmentation in strongly interacting Bose-Hubbard chains
While isolated quantum systems generally thermalize after long-time evolution, there are several exceptions defying thermalization. A notable mechanism of such nonergodicity is the Hilbert space fragmentation (HSF), where the Hamiltonian matrix splits into an exponentially large number of sectors due to the presence of nontrivial conserved quantities. Using ultracold gases, here we experimentally investigate the one-dimensional Bose-Hubbard system with neither disorder nor tilt potential, which…

I am at the same position as this post lines out. I’m neither hard core pro or anti LLMs. I think they are useful in specific contexts e.g. distilling and querying big chunks of text based information. They are not a hail mary solution to every problem.
„A lot of people like Rust and hate Go, and a lot of people like Go and hate Rust. That’s fine. That doesn’t bother me. But there’s something different about [AI discourse] that is driving me up a wall.“

“Abide in me as I abide in you. Just as the branch cannot bear fruit by itself unless it abides in the vine, neither can you unless you abide in me.”
‭‭John€ ‭15€:‭4€ ‭NRSV€€
https://bible.com/bible/2016/jhn.15.4.NRSV
The True Vine

John 15:4 Abide in me as I abide in you. Just as the branch cannot bear fruit by itself unless it abides in the vine, neither can you unless you abide in me. | New Revised Standard Version (NRSV) | Download The Bible App Now
Abide in me as I abide in you. Just as the branch cannot bear fruit by itself unless it abides in the vine, neither can you unless you abide in me.

I've never written a novel or any other intensely-plotted work of fiction, but anyone who has read or watched it played a lot of stories can probably also recognize that some authors just aren't good at endings. They're great at setting things in motion, at keeping the twists and turns coming, at the soap opera style of drama. But they just don't have the craft necessary to tie things together into a satisfying conclusion. I imagine it's much harder than the process of getting things going out keeping them moving, since you both have to wind down all the various threads you've spun up and balance satisfaction with believability.
I just finished Girl Gone Viral by Arvin Ahmadi, and it has a bad ending. The beginning is fine, the middle has plenty of drama to keep you wanting to see what happens, but the ending is murky, unsatisfying, and manages neither veracity nor satisfaction (even discounting the biggest next step that might reasonably have been left there to make room for a sequel).
Given the other issues with the book, from poor politics, to inauthentic characters, to a techno-optimism that feels as bitter in this moment as it is far from the mark in its predictions, I can't recommended it, despite having read through to the end.
#AmReading

Only the Ambidextrous Can Flock: Two-dimensional Chiral Malthusian Flocks, Time crystals, and the KPZ Equation
Leiming Chen, Chiu Fan Lee, John Toner
https://arxiv.org/abs/2506.03488

Only the Ambidextrous Can Flock: Two-dimensional Chiral Malthusian Flocks, Time crystals, and the KPZ Equation
We study two-dimensional chiral dry Malthusian flocks; that is, chiral polar-ordered active matter with neither number nor momentum conservation. In the absence of fluctuations, these form a "time crystal", in which the velocity rotates uniformly at a fixed frequency. Fluctuations are described by the (2+1)-Kardar-Parisi-Zhang (KPZ) equation, which implies short-ranged orientational order. For weak chirality, the system is in the linear regime of the KPZ equation for a wide range of length scal…

Thank god I'm neither Spanish or Italian because I would already be dead #RolandGarros

Orbital Stability of Plane Waves in the Klein-Gordon Equation against Localized Perturbations
Emile Bukieda, Louis Gar\'enaux, Bj\"orn de Rijk
https://arxiv.org/abs/2506.06029

Orbital Stability of Plane Waves in the Klein-Gordon Equation against Localized Perturbations
We investigate the stability and long-term behavior of spatially periodic plane waves in the complex Klein-Gordon equation under localized perturbations. Such perturbations render the wave neither localized nor periodic, placing its stability analysis outside the scope of the classical orbital stability theory for Hamiltonian systems developed by Grillakis, Shatah, and Strauss. Inspired by Zhidkov's work on the stability of time-periodic, spatially homogeneous states in the nonlinear Schröding…

Labelling Data with Unknown References
Adrian de Wynter
https://arxiv.org/abs/2506.03083 https://arxiv.org/pdf/2506.03083

Labelling Data with Unknown References
An evaluator is trustworthy when there exists some agreed-upon way to measure its performance as a labeller. The two ways to establish trustworthiness are either by testing it, or by assuming the evaluator `knows' somehow the way to label the corpus. However, if labelled references (e.g., a development set) are unavailable, neither of these approaches work: the former requires the data, and the latter is an assumption, not evidence. To address this, we introduce an algorithm (the `No-Data Algor…

". . . pulling out a keffiyeh and shouting, “Free Palestine!” But his depraved actions, like theirs, expose the lie of his lofty words. Neither Palestine nor Israel will ever truly be free until their societies are liberated from megalomaniacal men who perpetrate demonic acts in their name."

The D.C. Jewish Museum Shooting and a Dangerous Disguise for Anti-Semitism
The person charged with attacking an American Jewish gathering and killing two Israeli-embassy aides disingenuously invoked the Palestinian struggle as a pretext to harm Jews.

I think a lot of the "tourist" vs "traveller" is just snobbishness, but one useful distinction is that a tourist is someone who wears a t-shirt they bought at one tourism destination at another tourism destination (neither of which is, of course, their home). #Italy25

Is there a Larks Tongues in Aspic Day?
If there were then it should probably be 23rd of March but if there isn't it's today, May 27th.
Not because of the 27 Club
Not because of the Martin 27 Guitar
Nor that 27 is a perfect cube
Or that 27ish C is a comfortable degree of heat
Neither is it that 27 in the Correspondences of Liber 777 is Red, Horus, Krishna, Mars, Ruby or Mouth, etc
It's just because I thought it today.

CHIP: Chameleon Hash-based Irreversible Passport for Robust Deep Model Ownership Verification and Active Usage Control
Chaohui Xu, Qi Cui, Chip-Hong Chang
https://arxiv.org/abs/2505.24536

CHIP: Chameleon Hash-based Irreversible Passport for Robust Deep Model Ownership Verification and Active Usage Control
The pervasion of large-scale Deep Neural Networks (DNNs) and their enormous training costs make their intellectual property (IP) protection of paramount importance. Recently introduced passport-based methods attempt to steer DNN watermarking towards strengthening ownership verification against ambiguity attacks by modulating the affine parameters of normalization layers. Unfortunately, neither watermarking nor passport-based methods provide a holistic protection with robust ownership proof, hig…

Often disrupting a single link in the infection chain can prevent malware from landing on a system. This is, of course, the Kill Chain concept. You can kill two links in the Katz Stealer chain by blocking msbuild.exe and cmstp.exe, neither of which are used by most people.
#cybersecurity
From: @…

What's going on with this #ICLR paper?
The metareview says that the authors provided a sound rebuttal and update to the paper, but neither are available (rebuttals are shown on other papers).
https://openreview.…

GLoRa: A Benchmark to Evaluate the Ability to Learn Long-Range...
Learning on graphs is one of the most active research topics in machine learning (ML). Among the key challenges in this field, effectively learning long-range dependencies in graphs has been...

This https://arxiv.org/abs/2503.05728 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csCY_…

Political Neutrality in AI Is Impossible- But Here Is How to Approximate It
AI systems often exhibit political bias, influencing users' opinions and decisions. While political neutrality-defined as the absence of bias-is often seen as an ideal solution for fairness and safety, this position paper argues that true political neutrality is neither feasible nor universally desirable due to its subjective nature and the biases inherent in AI training data, algorithms, and user interactions. However, inspired by Joseph Raz's philosophical insight that "neutrality [...] can b…

On 102-avoiding inversion sequences
JiSun Huh, Sangwook Kim, Seunghyun Seo, Heesung Shin
https://arxiv.org/abs/2506.02985 https://arx…

On 102-avoiding inversion sequences
In this article, we provide a bijection between the set of inversion sequences avoiding the pattern 102 and the set of 2-Schröder paths having neither peaks nor valleys and ending with a diagonal step. To achieve this, we introduce two intermediate objects, called UVD paths and labeled $F$-paths, and establish bijections among all four families. For each of these combinatorial objects, we define a natural statistic and enumerate the corresponding structures with respect to this statistic. In a…

I keep posting about how the AI hype bubble makes it almost impossible to have a reasonable conversation about LLMs, and it’s only when the bubble bursts that we can start thinking realistically about what if anything LLMs are actually good for in writing code.
That seems to be what Fred is getting at here: the massive gap between the hype and the reality means that the affordances of these tools fit neither the task at hand nor the tool’s own capabilities.
6/

Today in “silly billboards in my community”. The first is by the very “truthful” (/s) people at LNGfacts.ca. Of course, the word "LNGfacts" does not appear anywhere in the dictionary because it's made up nonsense. Just like the "fact" that LNG “makes Canada stronger”... like we're going to win the war in Ukraine with our LNG or fend off #TheAmericanFascist. (Note: LNG is a tool of fascists not the other way around)
This billboard used to say “BC LNG WILL REDUCE GLOBAL EMISSIONS”... with a link to ‘bclnghelps.ca' but that was so clearly a lie that they were forced by the courts to remove it and delete their website, but I made a website instead in their honour called: bclngburns.ca
Back to today's billbboard though... Here's a fact from February 2025: “European LNG imports fell by 19% in 2024 as gas consumption reached an 11-year low, thanks, in part, to renewable energy additions.” (#BCPoli #BCLNG #ClimateAction #ClimateEmergency #ExtinctionRebellion #LNG #NaturalGas #Europe #EU #Ukraine #Russia

Stabilization of the Gradient Method for Solving Linear Algebraic Systems - A Method Related to the Normal Equation
Ibrahima Dione
https://arxiv.org/abs/2506.00702

Stabilization of the Gradient Method for Solving Linear Algebraic Systems - A Method Related to the Normal Equation
Although it is relatively easy to apply, the gradient method often displays a disappointingly slow rate of convergence. Its convergence is specially based on the structure of the matrix of the algebraic linear system, and on the choice of the stepsize defining the new iteration. We propose here a simple and robust stabilization of the gradient method, which no longer assumes a structure on the matrix (neither symmetric, nor positive definite) to converge, and which no longer requires an approac…

Hey. I don’t know how to share this here. I don't know how to "frame" it for Mastodon...
But I want to share it. Because I know other people out there hurt. I know how isolating it is.
So, this isn't snappy & well-packaged. But neither am I. And neither is pain.
I hope this somehow helps someone feel less alone in their pain:

An Open Letter to My Body (and an Apology to the Public)
This is a post in two parts. One to my body, and one to you.

This https://arxiv.org/abs/2303.06701 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_eco…

Composite Sorting
This paper introduces an assignment model with concave costs of skill gaps, which arise generally when firms mitigate costs of mismatch as in Stigler (1939) and Laffont and Tirole (1986, 1991). Concave costs of skill gaps imply that the output function is neither supermodular nor submodular. We thus introduce a tractable model that interpolates between the polar canonical cases of supermodularity and submodularity. We characterize sorting, wages, and comparative statics and show these substanti…

Effects of thrust, tip-speed ratio, and time variations on wind-turbine wakes at high Reynolds numbers
Nathaniel J. Wei, Adina Y. Fleisher, John W. Kurelek, Marcus N. Hultmark
https://arxiv.org/abs/2505.22788

Effects of thrust, tip-speed ratio, and time variations on wind-turbine wakes at high Reynolds numbers
The evolution of rotor wakes is an important problem for a wide range of wind-energy and aerodynamic applications, and is of particular relevance to dynamic wake control strategies for wind farms. This study aims to clarify the influence of turbine thrust and tip-speed ratio on tip-vortex breakdown and the evolution of the near wake. Scaling arguments show that these parameters contribute to the wake dynamics in distinct ways, and that neither thrust nor tip-speed ratio are alone sufficient to …

Just think how gaming might have been if Halo hadn't been such a huge Mac hit? What if Bungie hadn't been a Mac-based company? What if Myth or Marathon had ended up on that thing M$ nearly made, that Direct X crate?
Crazy, innit?
Anyway, neither could have beaten the Nintendo Playstation, eh?

This https://arxiv.org/abs/2502.21026 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csCR_…

Artemis: Toward Accurate Detection of Server-Side Request Forgeries through LLM-Assisted Inter-Procedural Path-Sensitive Taint Analysis
Server-side request forgery (SSRF) vulnerabilities are inevitable in PHP web applications. Existing static tools in detecting vulnerabilities in PHP web applications neither contain SSRF-related features to enhance detection accuracy nor consider PHP's dynamic type features. In this paper, we present Artemis, a static taint analysis tool for detecting SSRF vulnerabilities in PHP web applications. First, Artemis extracts both PHP built-in and third-party functions as candidate source and sink fu…

Competing Mechanisms at Vibrated Interfaces of Density-Stratified Fluids
Tianyi Chu, Benjamin Wilfong, Timothy Koehler, Ryan M. McMullen, Spencer H. Bryngelson
https://arxiv.org/abs/2505.23578

Competing Mechanisms at Vibrated Interfaces of Density-Stratified Fluids
Fluid--fluid interfacial instability and subsequent fluid mixing are ubiquitous in nature and engineering. Two hydrodynamic instabilities have long been thought to govern the interface behavior: the pressure gradient-driven long-wavelength Rayleigh--Taylor (RT) instability and resonance-induced short-wavelength Faraday instability. However, neither instability alone can explain the dynamics when both mechanisms act concurrently. Instead, we identify a previously unseen multi-modal instability e…