Tootfinder

Report: Dallas Cowboys not expected to use 2024 franchise tag on Tony Pollard https://www.yardbarker.com/nfl/articles/report_dallas_cowboys_not_expected_to_use_2024_franchise_tag_on_tony_pollard/s1_17…

Report: Dallas Cowboys not expected to use 2024 franchise tag on Tony Pollard
One of the Dallas Cowboys’ hardest decisions of the 2024 offseason is what to do with running back Tony Pollard. After using the 2023 franchise tag on him to lock his salary in at $10.1 million, the Cowboys would have to pay him a 20% increase to tag him again for next season. According to NFL insider Adam Schefter, Dallas is not expected to pay that $12.1 million for a tag on Pollard in 2024. Instead, the organization can negotiate a deal of lesser value for the former fourth-round draft pic…

Claude 3 is officially on the top of the leaderbord, although it's just one leaderboard/benchmark and added value always depends on use and context, it's still the end of GPT4 total dominance (unil GPT5 arrives probably). Interesting is also the performance of the Claude 3 Haiku model which is relatively small/cheap.
ht…

LMSys Chatbot Arena Leaderboard - a Hugging Face Space by lmsys
Discover amazing ML apps made by the community

Python Question: Is there an efficient way to see if every element in an iterable is equal to a user-specified value?
The best idea I've seen so far is to use a list comprehension to check for equality, and then use the all function, like this:
MyList = [1,1,1,1,1,1,1]
all((x==1 for x in MyList))
That's readable and probably not bad performance. Is there something better?
#Python

Today we are getting confused when #RustLang complains about not being able to deserialize a Value and we spend a good hour trying to work out why a JSON::Value can’t be deserialized despite several tests showing that they can, in fact, be deserialized before realising there’s another crate in use which also uses Value…

Optimizing Portfolio Management and Risk Assessment in Digital Assets Using Deep Learning for Predictive Analysis
Qishuo Cheng, Le Yang, Jiajian Zheng, Miao Tian, Duan Xin
https://arxiv.org/abs/2402.15994 https://arxiv.org/pdf/2402.15994
arXiv:2402.15994v1 Announce Type: new
Abstract: Portfolio management issues have been extensively studied in the field of artificial intelligence in recent years, but existing deep learning-based quantitative trading methods have some areas where they could be improved. First of all, the prediction mode of stocks is singular; often, only one trading expert is trained by a model, and the trading decision is solely based on the prediction results of the model. Secondly, the data source used by the model is relatively simple, and only considers the data of the stock itself, ignoring the impact of the whole market risk on the stock. In this paper, the DQN algorithm is introduced into asset management portfolios in a novel and straightforward way, and the performance greatly exceeds the benchmark, which fully proves the effectiveness of the DRL algorithm in portfolio management. This also inspires us to consider the complexity of financial problems, and the use of algorithms should be fully combined with the problems to adapt. Finally, in this paper, the strategy is implemented by selecting the assets and actions with the largest Q value. Since different assets are trained separately as environments, there may be a phenomenon of Q value drift among different assets (different assets have different Q value distribution areas), which may easily lead to incorrect asset selection. Consider adding constraints so that the Q values of different assets share a Q value distribution to improve results.

On the Redistribution of Maximal Extractable Value: A Dynamic Mechanism
Pedro Braga, Georgios Chionas, Stefanos Leonardos, Piotr Krysta, Georgios Piliouras, Carmine Ventre
https://arxiv.org/abs/2402.15849

On the Redistribution of Maximal Extractable Value: A Dynamic Mechanism
Maximal Extractable Value (MEV) has emerged as a new frontier in the design of blockchain systems. The marriage between decentralization and finance gives the power to block producers (a.k.a., miners) not only to select and add transactions to the blockchain but, crucially, also to order them so as to extract as much financial gain as possible for themselves. Whilst this price may be unavoidable for the service provided by block producers, users of the chain may in the long run prefer to use le…

#Mastodon instance owners and admins, what value do you use for "Content cache retention period"? As a single user of my instance on masto.host, I hit the Database limit in less than a year. If I understand correctly, this setting deletes even bookmarks and replies from other servers, yet there's no way of limiting only heavy posters like news bots that could easily broadc…

This https://arxiv.org/abs/2304.15000 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csPL_…

Quantum Control Machine: The Limits of Control Flow in Quantum Programming
Quantum algorithms for tasks such as factorization, search, and simulation rely on control flow such as branching and iteration that depends on the value of data in superposition. High-level programming abstractions for control flow, such as switches, loops, and higher-order functions, are ubiquitous in classical languages. By contrast, many quantum languages do not provide high-level abstractions for control flow in superposition, and instead require the use of hardware-level logic gates to im…

Aligning Large Language Models for Enhancing Psychiatric Interviews through Symptom Delineation and Summarization
Jae-hee So, Joonhwan Chang, Eunji Kim, Junho Na, JiYeon Choi, Jy-yong Sohn, Byung-Hoon Kim, Sang Hui Chu
https://arxiv.org/abs/2403.17428

Aligning Large Language Models for Enhancing Psychiatric Interviews through Symptom Delineation and Summarization
Recent advancements in Large Language Models (LLMs) have accelerated their usage in various domains. Given the fact that psychiatric interviews are goal-oriented and structured dialogues between the professional interviewer and the interviewee, it is one of the most underexplored areas where LLMs can contribute substantial value. Here, we explore the use of LLMs for enhancing psychiatric interviews, by analyzing counseling data from North Korean defectors with traumatic events and mental health…

This https://arxiv.org/abs/2311.16640 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Rational numbers with small denominators in short intervals
We use bounds on bilinear forms with Kloosterman fractions and improve the error term in the asymptotic formula of Balazard and Martin (2023) on the average value of the smallest denominators of rational numbers in short intervals.

TikTok launches a new creator monetization program called Creator Rewards, which will use four core metrics to determine payout, including "search value" (Mia Sato/The Verge)
https://www.theverge.com/2024/3/18/2410169

TikTok is paying creators to up its search game
TikTok’s new creator monetization program called Creator Rewards will use four core metrics to determine payout. One metric is the “search value” of content.

This https://arxiv.org/abs/2402.10460 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csDB_…

A survey of LSM-Tree based Indexes, Data Systems and KV-stores
Modern databases typically makes use of the Log Structured Merge-Tree for organizing data in indexes, which is a kind of disk-based data structure. It was proposed to efficiently handle frequent update queries (also called update intensive workloads) databases. In recent years, LSM-Tree has gained popularity and has been adopted by a number of NoSql databases, and key-value stores. Since LSM-Tree was first proposed, researchers and the database community started efforts to improve different com…

Use Value Objects rather than massive $options arrays when exposing an interface for configuring requests made by your SDK, because you want to make your SDK code as self-documenting as possible. - @… #phptek

Kitten breaking change: Route handlers, etc., now take parameter objects
Just pushed the API updates I’d posted about earlier to main and to the latest Kitten release.
This change affects:
- Route handlers (all types of routes)
- `onConnect()` handlers
- The default export on main.script.js files
I’ve updated all the examples, documentation, etc., on Kitten to use the new API but if you see anything I’ve missed, please let me know.

app
A web development kit that’s small, purrs, and loves you.

TikTok launches a new creator monetization program called Creator Rewards, which will use four core metrics to determine payout, including "search value" (Mia Sato/The Verge)
https://www.theverge.com/2024/3/18/2410169

TikTok is paying creators to up its search game
TikTok’s new creator monetization program called Creator Rewards will use four core metrics to determine payout. One metric is the “search value” of content.

Use cookies in shiny apps: #rstats #shiny

This https://arxiv.org/abs/2304.15000 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csPL_…

Quantum Control Machine: The Limits of Control Flow in Quantum Programming
Quantum algorithms for tasks such as factorization, search, and simulation rely on control flow such as branching and iteration that depends on the value of data in superposition. High-level programming abstractions for control flow, such as switches, loops, and higher-order functions, are ubiquitous in classical languages. By contrast, many quantum languages do not provide high-level abstractions for control flow in superposition, and instead require the use of hardware-level logic gates to im…

Improving Efficiency of Parallel Across the Method Spectral Deferred Corrections
Gayatri \v{C}aklovi\'c, Thibaut Lunet, Sebastian G\"otschel, Daniel Ruprecht
https://arxiv.org/abs/2403.18641

Improving Efficiency of Parallel Across the Method Spectral Deferred Corrections
Parallel-across-the method time integration can provide small scale parallelism when solving initial value problems. Spectral deferred corrections (SDC) with a diagonal sweeper, which is closely related to iterated Runge-Kutta methods proposed by Van der Houwen and Sommeijer, can use a number of threads equal to the number of quadrature nodes in the underlying collocation method. However, convergence speed, efficiency and stability depends critically on the used coefficients. Previous approache…

This https://arxiv.org/abs/2311.16640 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Rational numbers with small denominators in short intervals
We use bounds on bilinear forms with Kloosterman fractions and improve the error term in the asymptotic formula of Balazard and Martin (2023) on the average value of the smallest denominators of rational numbers in short intervals.

Supernova Remnant properties and Luminosity Functions in NGC 7793 using MUSE IFS
Maria Kopsacheili, Cristina Jim\'enez-Palau, Llu\'is Galbany, Panayotis Boumis, Ra\'ul Gonz\'alez-D\'iaz
https://arxiv.org/abs/2403.17053

Supernova Remnant properties and Luminosity Functions in NGC 7793 using MUSE IFS
In this study we use MUSE Integral Field Spectroscopy (IFS), along with multi-line diagnostics, for the optical identification of Supernova Remnants (SNRs) in the galaxy NGC 7793. We find in total 238 SNR candidates, 225 of them new identifications, increasing significantly the number of known SNRs in this galaxy. The velocity dispersion of the candidate SNRs was calculated, giving a mean value of 27 $ km\,s^{ -1} $. We construct the H$\rm α$, [S II], [O III], and [S II] - H$\rm α$ luminosity…

Visualizing Progress in Broadening Participation in Computing: The Value of Context
Valerie Barr, Carla E. Brodley, Manuel A. P\'erez-Qui\~nones
https://arxiv.org/abs/2403.14708

Visualizing Progress in Broadening Participation in Computing: The Value of Context
Concerns about representation in computing within the U.S. have driven numerous activities to broaden participation. Assessment of the impact of these efforts and, indeed, a clear assessment of the actual "problem" being addressed are limited by the nature of the most common data analysis which looks at the representation of each population as a percentage of the number of students graduating with a degree in computing. This use of a single metric cannot adequately assess the impact of broadeni…

Deep learning-driven scheduling algorithm for a single machine problem minimizing the total tardiness
Michal Bou\v{s}ka, P\v{r}emysl \v{S}\r{u}cha, Anton\'in Nov\'ak, Zden\v{e}k Hanz\'alek
https://arxiv.org/abs/2402.14847

Deep learning-driven scheduling algorithm for a single machine problem minimizing the total tardiness
In this paper, we investigate the use of the deep learning method for solving a well-known NP-hard single machine scheduling problem with the objective of minimizing the total tardiness. We propose a deep neural network that acts as a polynomial-time estimator of the criterion value used in a single-pass scheduling algorithm based on Lawler's decomposition and symmetric decomposition proposed by Della Croce et al. Essentially, the neural network guides the algorithm by estimating the best split…

This https://arxiv.org/abs/2309.13755 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Efficient Recursive Data-enabled Predictive Control (Extended Version)
In the field of model predictive control, Data-enabled Predictive Control (DeePC) offers direct predictive control, bypassing traditional modeling. However, challenges emerge with increased computational demand due to recursive data updates. This paper introduces a novel recursive updating algorithm for DeePC. It emphasizes the use of Singular Value Decomposition (SVD) for efficient low-dimensional transformations of DeePC in its general form, as well as a fast SVD update scheme. Importantly, o…

This https://arxiv.org/abs/1103.5906 has been replaced.
link: https://scholar.google.com/scholar?q=a<…

Torsion groups of elliptic curves over quadratic fields
We describe methods to determine all the possible torsion groups of an elliptic curve that actually appear over a fixed quadratic field. We use these methods to find, for each group that can appear over a quadratic field, the field with the smallest absolute value of it's discriminant such that there exists an elliptic curve with that torsion. We also examine the interplay of the torsion and rank over a fixed quadratic field and see that what happens is very different than over $\Q$. Finally we…

Door Dash on Wednesday: “Hey Dashers! We're on your side! Don't let Government take away your money by regulating us!”
Door Dash on Friday: “Hey Dashers! You're great! Here's a coupon for a free catering bag ($22 value). Please pay $35 shipping, or only $113.97 if you'd like us* to deliver it “Priority”
*none of these options use door dash as a delivery of course...
🤦‍♂️🤣😂

In Defense of the Coronary Artery Calcium Scan in Primary Prevention of Atherosclerotic Heart Disease – The Skeptical Cardiologist https://theskepticalcardiologist.com/2024/03/08/in-de…

This https://arxiv.org/abs/2205.04162 has been replaced.
link: https://scholar.google.com/scholar?q=a

Fractional Boundary Value Problems and elastic sticky Brownian motions, II: The bounded domain
Sticky diffusion processes spend finite time (and finite mean time) on a lower-dimensional boundary. Once the process hits the boundary, then it starts again after a random amount of time. While on the boundary it can stay or move according to dynamics that are different from those in the interior. Such processes may be characterized by a time-derivative appearing in the boundary condition for the governing problem. We use time changes obtained by right-inverses of suitable processes in order t…

Hybrid Intersection Types for PCF (Extended Version)
Pablo Barenbaum, Delia Kesner, Mariana Milicich
https://arxiv.org/abs/2404.14340 https://

Hybrid Intersection Types for PCF (Extended Version)
Intersection type systems have been independently applied to different evaluation strategies, such as call-by-name (CBN) and call-by-value (CBV). These type systems have been then generalized to different subsuming paradigms being able, in particular, to encode CBN and CBV in a unique unifying framework. However, there are no intersection type systems that explicitly enable CBN and CBV to cohabit together without making use of an encoding into a common target framework. This work proposes an in…

Optimal regularity for all time for entropy solutions of conservation laws in $BV^s$
Shyam Sundar Ghoshal, Billel Guelmame, Animesh Jana, St\'ephane Junca
https://arxiv.org/abs/2402.15250

Optimal regularity for all time for entropy solutions of conservation laws in $BV^s$
This paper deals with the optimal regularity for entropy solutions of conservation laws. For this purpose, we use two key ingredients: (a) fine structure of entropy solutions and (b) fractional $BV$ spaces. We show that optimality of the regularizing effect for the initial value problem from $L^\infty$ to fractional Sobolev space and fractional $BV$ spaces is valid for all time. Previously, such optimality was proven only for a finite time, before the nonlinear interaction of waves. Here for so…

The United States was born in debt and swaddled in fiat currency.
Both in Congress and in the thirteen states, patriot officials funded their war for independence by printing endless reams of paper money,
which quickly depreciated in value,
and by borrowing vast sums from voluntary and involuntary creditors alike:
domestic elites, foreign merchants, European powers, Americans whose property was seized for the use of the army, and soldiers whose promised pay was persi…

Vacant Unsettled Lands | Michael A. Blaakman
American thinkers consider what the already occupied West could fund.

I learned you can use the `break` inside a `loop` to return a value. It feels strange coming to #Rust from #csharp. I would have expected to use the `return` keyword, but I guess it makes sense.
By the way, I'm taking the

This https://arxiv.org/abs/2309.12741 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Revisiting models that enhance $B^+\to K^+ ν\barν$ in light of the new Belle II measurement
Belle II has recently reported the new measurement ${\cal B}(B^+\to K^+ν\barν)=(2.3\pm0.7)\times 10^{-5}$ \cite{Belle-II:2023esi} which is two times larger than their previous result (although consistent within errors) and about $2.7\,σ$ higher than the SM prediction. We re-examine new physics scenarios we have discussed previously which can enhance this rate to determine if they can accommodate the higher value reported in the new measurement. We use consistency with existing bounds on $B\t…

Bayesian D-Optimal Experimental Designs via Column Subset Selection: The Power of Reweighted Sensors
Srinivas Eswar, Vishwas Rao, Arvind K. Saibaba
https://arxiv.org/abs/2402.16000

Bayesian D-Optimal Experimental Designs via Column Subset Selection: The Power of Reweighted Sensors
This paper tackles optimal sensor placement for Bayesian linear inverse problems, a popular version of the more general Optimal Experiment Design (OED) problem, using the D-optimality criterion. This is done by establishing connections between sensor placement and Column Subset Selection Problem (CSSP), which is a well-studied problem in Numerical Linear Algebra (NLA). In particular, we use the Golub-Klema-Stewart (GKS) approach which involves computing the truncated Singular Value Decompositio…

Goal-Conditioned Offline Reinforcement Learning via Metric Learning
Alfredo Reichlin, Miguel Vasco, Hang Yin, Danica Kragic
https://arxiv.org/abs/2402.10820

Goal-Conditioned Offline Reinforcement Learning via Metric Learning
In this work, we address the problem of learning optimal behavior from sub-optimal datasets in the context of goal-conditioned offline reinforcement learning. To do so, we propose a novel way of approximating the optimal value function for goal-conditioned offline RL problems under sparse rewards, symmetric and deterministic actions. We study a property for representations to recover optimality and propose a new optimization objective that leads to such property. We use the learned value functi…

I keep seeing things like "How to use 'AI' to play D'n'D solo" and I wonder what people believe why others play pen and paper RPGs?
For me it doesn't make sense: If I play alone I want a highly curated experience which often times means a video game RPG. The value of playing a pen and paper RPG is in it being a social, shared experience.

Bayesian D-Optimal Experimental Designs via Column Subset Selection: The Power of Reweighted Sensors
Srinivas Eswar, Vishwas Rao, Arvind K. Saibaba
https://arxiv.org/abs/2402.16000

Bayesian D-Optimal Experimental Designs via Column Subset Selection: The Power of Reweighted Sensors
This paper tackles optimal sensor placement for Bayesian linear inverse problems, a popular version of the more general Optimal Experiment Design (OED) problem, using the D-optimality criterion. This is done by establishing connections between sensor placement and Column Subset Selection Problem (CSSP), which is a well-studied problem in Numerical Linear Algebra (NLA). In particular, we use the Golub-Klema-Stewart (GKS) approach which involves computing the truncated Singular Value Decompositio…

Finally remembered to use the new /r flag in a #Perl regex substitution to return the changed value while map'ing over a list: `say join(';', map { s/;/,/gr } @values);`

Absolutely agree with this @… are amazing
https://mstdn.social/@W_Lucht/111903110020482060
Have I my mentioned how totally awesome @organicmaps's new &q…

This https://arxiv.org/abs/2311.02541 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Reduced tensor network formulation for non-Abelian gauge theories in arbitrary dimensions
Formulating non-Abelian gauge theories as a tensor network is known to be challenging due to the internal degrees of freedom that result in the degeneracy in the singular value spectrum. In two dimensions, it is straightforward to 'trace out' these degrees of freedom with the use of character expansion, giving a reduced tensor network where the degeneracy associated with the internal symmetry is eliminated. In this work, we show that such an index loop also exists in higher dimensions in the fo…

The United States was born in debt and swaddled in fiat currency.
Both in Congress and in the thirteen states, patriot officials funded their war for independence by printing endless reams of paper money,
which quickly depreciated in value,
and by borrowing vast sums from voluntary and involuntary creditors alike:
domestic elites, foreign merchants, European powers, Americans whose property was seized for the use of the army, and soldiers whose promised pay was persi…

Vacant Unsettled Lands | Michael A. Blaakman
American thinkers consider what the already occupied West could fund.

I’m not sure how effective this from @… would be on legal grounds, but it’s certainly a way to damage Reddit’s asset value (the asset in question being your contributions):
https://

The Luddite (@theluddite@assemblag.es)
Reddit signed a deal with Google to use its data to train LLMs. To celebrate, we made a firefox extension that lets you replace all your comments with any text of your choosing. All we ask is that you not choose something copyrighted. The New York Times is currently suing OpenAI for training ChatGPT on its copyrighted material, and we wouldn't want Reddit's uniquely valuable data to become hopelessly intermingled with that of litigious copyright-holders. https://theluddite.org/#!post/reddit-ex…

A nonstandard application of cross-validation to estimate density functionals
Jos\'e E. Chac\'on, Carlos Tenreiro
https://arxiv.org/abs/2404.13753 …

A nonstandard application of cross-validation to estimate density functionals
Cross-validation is usually employed to evaluate the performance of a given statistical methodology. When such a methodology depends on a number of tuning parameters, cross-validation proves to be helpful to select the parameters that optimize the estimated performance. In this paper, however, a very different and nonstandard use of cross-validation is investigated. Instead of focusing on the cross-validated parameters, the main interest is switched to the estimated value of the error criterion…

Hill: Raiders’ draft predicament again shows value of tanking https://www.reviewjournal.com/sports/sports-columns/adam-hill/hill-raiders-draft-predicament-again-shows-value-of-tanking-3026220/<…

Hill: Raiders’ draft predicament again shows value of tanking
The Raiders believed they needed to win down the stretch to secure the full-time job for coach Antonio Pierce. But they could use better draft position now.

This https://arxiv.org/abs/2404.01396 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

A case study against QSVT: assessment of quantum phase estimation improved by signal processing techniques
In recent years, quantum algorithms have been proposed which use quantum phase estimation (QPE) coherently as a subroutine without measurement. In order to do this effectively, the routine must be able to distinguish eigenstates with success probability close to unity. In this paper, we provide the first systematic comparison between two approaches towards maximizing this success probability, one using the quantum singular value transform and the other leveraging window functions, which have be…

This https://arxiv.org/abs/2312.09353 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qfi…

Residual U-net with Self-Attention to Solve Multi-Agent Time-Consistent Optimal Trade Execution
In this paper, we explore the use of a deep residual U-net with self-attention to solve the the continuous time time-consistent mean variance optimal trade execution problem for multiple agents and assets. Given a finite horizon we formulate the time-consistent mean-variance optimal trade execution problem following the Almgren-Chriss model as a Hamilton-Jacobi-Bellman (HJB) equation. The HJB formulation is known to have a viscosity solution to the unknown value function. We reformulate the HJB…

Discussions of inheritance taxation often ignore that fact that, under US law, death is a wealth enhancing event. The government provides heirs with subsidies that increase with wealth.
The best known heir-subsidy is the increase in basis on inherited property. When computing capital gains, heirs use the value of the property at time of death. So, a sale of property before one's death might be heavily tax but one's heirs might sell the same property tax-free. Not fair.
<…

Making a case for the inheritance tax (with David Stasavage) - Pitchfork Economics
Over the next two decades, $30 trillion of wealth is expected to be transferred from Baby Boomers to their heirs. Journalists and financial experts have been referring to this event as the “Great Wealth Transfer,” and it's important that we understand the policies that make such a monumental transferral of generational wealth possible—not to mention the tremendous economic and societal implications of this unprecedented economic activity. In this episode, we have the privilege of speaking…

A higher Mackey functor description of algebras over an $N_{\infty}$-operad
Gregoire Marc
https://arxiv.org/abs/2402.12447 https://ar…

A higher Mackey functor description of algebras over an $N_{\infty}$-operad
Suppose $G$ is a finite group. In this paper, we construct an equivalence between the $\infty$-category of algebras over an $N_{\infty}$-operad $\mathcal{O}$ associated to a $G$-indexing system $\mathcal{I}$ and the corresponding $\infty$-category of higher incomplete $\mathcal{I}$-Mackey functors with value in spaces. We use the universal property of the incomplete $(2, 1)$-category of spans of finite $G$-sets $\mathscr{A}_{\mathcal{I}}$ to construct a functor from $\mathscr{A}_{\mathcal{I}}$ …

"Any centralized communication platform, particularly one operated for profit, is vulnerable to being coopted by the powerful. This might mean exploiting users to maximize short-term profits or changing moderation rules to silence marginalized people and promote hate speech. The past year has seen unprecedented numbers of users fleeing X, Reddit, and other platforms over changes in policy. But leaving these platforms, whether in protest, disgust, or boredom, leaves behind an important d…

Interesting remarks by Strevens in response to Kitcher's book on the aims and methods of philosophy
> philosophy’s most influential counterexamples are intended ... to play the same role as anomalies in Kuhnian science: to serve as the brave little facts that bring down great theories and make progress possible. If philosophical thought-experimenters conduct themselves ... as empirical scientists... it might be no bad thing for the enterprise of philosophy

Philosophy as a Science and as a Humanity? - Philosophia
This commentary on Philip Kitcher’s book What’s the Use of Philosophy? addresses two questions. First, must philosophers be methodologically self-conscious to do good work? Second, is there value in the questions pursued in the traditional areas of analytic philosophy?

Also, Luminar Neo is available on sale for 83% off its original price. Of course they run subscriptions, but one-time payment is still possible.
After a few moments with free trial I'm not exactly sold, but it has one particular advantage over the one I use.
Apparently it supports HEIC and DNG files from both of my phones.
https://

Luminar Neo Price: Buy Luminar Neo Right Now
Explore the latest Luminar Neo pricing options and discover the perfect plan for your creative needs. Compare prices and features to find the best value for this cutting-edge editing software. Unlock your artistic potential with Luminar Neo today!

This https://arxiv.org/abs/2403.08929 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Two-sided Assortment Optimization: Adaptivity Gaps and Approximation Algorithms
To address the challenge of choice congestion in matching markets, in this work, we introduce a two-sided assortment optimization framework under general choice preferences. The goal in this problem is to maximize the expected number of matches by deciding which assortments are displayed to the agents and the order in which they are shown. In this context, we identify several classes of policies that platforms can use in their design. Our goals are: (1) to measure the value that one class of po…

“Hogan's report suggests that a reduction in the use of outside contractors could have lowered costs and "enhanced value for money." “
Weird: So having skilled employees is actually a good idea for people and for financial accountability?!
#CanPoli #ArriveCan …

This https://arxiv.org/abs/2311.02706 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Whittaker functions for Steinberg representations of $GL(n)$ over a $p$-adic field
Let $G=GL_{n}(F)$ and let $(π_{St},V)$ be a (generalized) Steinberg representation of $G$. It is well known that the space of Iwahori fixed vectors in $V$ is one dimensional. The Iwahori Hecke algebra acts on this space via a character. We determine the value of this character on a particular Hecke algebra element and use this action to determine in full the Whittaker function associated with an Iwahori fixed vector generalizing a result of Baruch and Purkait for $GL_2(F)$. We show that the Iw…

This https://arxiv.org/abs/2311.03556 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Bounds on tidal charges from gravitational-wave ringdown observations
Black hole solutions in the braneworld scenario are predicted to possess a tidal charge parameter, leaving imprints in the quasinormal spectrum. We conduct an extensive computation of such spectrum, and use it to construct a waveform model for the ringdown relaxation regime of binary black hole mergers observed by LIGO and Virgo. Applying a Bayesian time-domain analysis formalism, we analyse a selected dataset from the GWTC-3 LIGO-Virgo-Kagra catalog of binary coalescences, bounding the value o…

This https://arxiv.org/abs/2312.08369 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_sta…

The Effective Horizon Explains Deep RL Performance in Stochastic Environments
Reinforcement learning (RL) theory has largely focused on proving minimax sample complexity bounds. These require strategic exploration algorithms that use relatively limited function classes for representing the policy or value function. Our goal is to explain why deep RL algorithms often perform well in practice, despite using random exploration and much more expressive function classes like neural networks. Our work arrives at an explanation by showing that many stochastic MDPs can be solved…

Finally remembered to use the new /r flag in a #Perl regex substitution to return the changed value while map'ing over a list: `say join(';', map { s/;/,/gr } @values);`

Online anonymity: study found ‘stable pseudonyms’ created a more civil environment than real user names 
'What matters, it seems, is not so much whether you are commenting anonymously, but whether you are invested in your persona and accountable for its behaviour in that particular forum. There seems to be value in enabling people to speak on forums without their comments being connected, via their real names, to other contexts.
...calls to end anonymity online by forcing pe…

Online anonymity: study found ‘stable pseudonyms’ created a more civil environment than real user names 
A higher quality discussion emerged among commenters allowed to use personas instead of their real names.

Extreme-value modelling of the brightest galaxies at $z\gtrsim9$
Cameron Heather, Teeraparb Chantavat, Siri Chongchitnan, Joseph Silk
https://arxiv.org/abs/2404.11567

Extreme-value modelling of the brightest galaxies at $z\gtrsim9$
Data from the James Webb Space Telescope have revealed an intriguing population of bright galaxies at high redshifts. In this work, we use extreme-value statistics to calculate the distribution (in UV magnitude) of the brightest galaxies in the redshift range $9 \lesssim z \lesssim 16$. We combine the Generalised Extreme Value (GEV) approach with modelling of the galaxy luminosity function. We obtain predictions of the brightest galaxies for a suite of luminosity functions, including the Schech…

Calling Betteridge's Law on this one..
#BetteridgesLaw

This https://arxiv.org/abs/1906.06790 has been replaced.
link: https://scholar.google.com/scholar?q=a

Abundance of primordial black holes with local non-Gaussianity in peak theory
We discuss the effect of local type non-Gaussianity on the abundance of primordial black holes (PBH) based on the peak theory. We provide the PBH formation criterion based on the so-called compaction function and use the peak theory statistics associated with the curvature perturbation with the local type non-Gaussianity. Providing a method to estimate the PBH abundance, we demonstrate the effects of non-Gaussianity. It is explicitly shown that the value of non-linear parameter $|f_{\rm NL…

A computed 95% confidence interval does cover the true value with probability 0.95 if epistemically interpreted
Dan Hedlin
https://arxiv.org/abs/2402.10000

A computed 95% confidence interval does cover the true value with probability 0.95 if epistemically interpreted
Suppose the lifetime of a large sample of batteries in routine use is measured. A confidence interval is computed to 394 plus/minus 1.96 times 4.6 days. The standard interpretation is that if we repeatedly draw samples and compute confidence intervals, about 95% of the intervals will cover the unknown true lifetime. What can be said about the particular interval 394 plus/minus 1.96 times 4.6 has not been clear. We clarify this by using an epistemic interpretation of probability. The conclusion …

Day 4 of attempting to daily drive postmarketOS Linux on a OnePlus 6T:
📶 I felt brave this morning, so I handed over my SIM card to Linux. At first, the phone didn't recognise the card, but the wiki page helped me resolve the problem quickly. I had to increase the config value `sim_wait_time` and reboot the phone to make it work. Mobile data and receiving texts work flawlessly. I haven't tried sending texts and making calls yet.
⏰ Yesterday, I also used the Clock app to s…

A nonstandard application of cross-validation to estimate density functionals
Jos\'e E. Chac\'on, Carlos Tenreiro
https://arxiv.org/abs/2404.13753 …

A nonstandard application of cross-validation to estimate density functionals
Cross-validation is usually employed to evaluate the performance of a given statistical methodology. When such a methodology depends on a number of tuning parameters, cross-validation proves to be helpful to select the parameters that optimize the estimated performance. In this paper, however, a very different and nonstandard use of cross-validation is investigated. Instead of focusing on the cross-validated parameters, the main interest is switched to the estimated value of the error criterion…

Realization of the Pascal based on Argon using a Fabry-P\'erot refractometer
Isak Silander, Johan Zakrisson, Ove Axner, Martin Zelan
https://arxiv.org/abs/2402.14511

Realization of the Pascal based on Argon using a Fabry-Pérot refractometer
Based on a recent experimental determination of the static polarizability and a first-principles calculation of the frequency-dependent dipole polarizability of argon, this work presents, by use of a Fabry-Pérot refractometer operated at 1550 nm, a realization of the SI unit of pressure, the pascal, for pressures up to 100 kPa, with an uncertainty of [(0.98 mPa)$^2 + (5.8 \times 10^{-6} P)^2 + (26\times10^{-12}P^2)^2]^{1/2}$. The work also presents a value of the molar polarizability of N$_2$ …

I'm all in favour of taxing the living daylights out of Elmo and his pals, but it always makes me feel queasy when I get the impression that people think you could actually translate the market value of Tesla and SpaceX into cash and use it to feed the poor. Much of that is just fantasy money. If you think it's real you've been exposed to finance news for too long or something.

This https://arxiv.org/abs/2404.01396 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

A case study against QSVT: assessment of quantum phase estimation improved by signal processing techniques
In recent years, quantum algorithms have been proposed which use quantum phase estimation (QPE) coherently as a subroutine without measurement. In order to do this effectively, the routine must be able to distinguish eigenstates with success probability close to unity. In this paper, we provide the first systematic comparison between two approaches towards maximizing this success probability, one using the quantum singular value transform and the other leveraging window functions, which have be…

A Sierpinski Triangle Data Structure for Efficient Array Value Update and Prefix Sum Calculation
Brent Harrison, Jason Necaise, Andrew Projansky, James D. Whitfield
https://arxiv.org/abs/2403.03990

A Sierpinski Triangle Data Structure for Efficient Array Value Update and Prefix Sum Calculation
The binary indexed tree, or Fenwick tree, is a data structure that can efficiently update values and calculate prefix sums in an array. It allows both of these operations to be performed in $O(\log_2 N)$ time. Here we present a novel data structure resembling the Sierpinski triangle, which accomplishes these operations with the same memory usage in $O(\log_3 N)$ time instead. We show this order to be optimal by making use of a connection to quantum computing.

Computing some Principal Value integrals without Residues and Applications on Hilbert Transform and Fourier Transform
Jorge Pedraza Arpasi
https://arxiv.org/abs/2404.02664

Computing some Principal Value integrals without Residues and Applications on Hilbert Transform and Fourier Transform
This article proposes a new approach in the treatment of the Hilbert transform and some cases of the Fourier transform whose improper integrals are principal values. This approach may be useful for teaching these issues to undergraduate engineering students. Traditional literature of Complex Analysis deals with these transformation integrals with the Cauchy-Goursat theorem and the residues calculation technique. In this new approach, instead of residues, we use an intuitive result about complex…

Evolution of rotating massive stars adopting a newer, self-consistent wind prescription at SMC metallicity
Alex Camilo Gormaz-Matamala, Jorge Cuadra, Sylvia Ekstr\"om, Georges Meynet, Michel Cur\'e, Krzysztof Belczynski
https://arxiv.org/abs/2404.07570

Evolution of rotating massive stars adopting a newer, self-consistent wind prescription at SMC metallicity
We use Geneva-evolution-code to run evolutionary tracks for stellar masses ranging from $20$ to $85$ $M_\odot$ at SMC metallicity ($Z=0.002$). We upgrade the recipe for stellar winds by adopting our self-consistent m-CAK prescription, which reduces the value of mass-loss rate by a factor between 2 and 6 depending on the mass range. The impact of our new winds is wide, and it can be divided between direct and indirect impact. For the most massive models ($60$ and $85$ $M_\odot$) with $\dot M\g…

This https://arxiv.org/abs/2312.05166 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Multi-Agent Reinforcement Learning via Distributed MPC as a Function Approximator
This paper presents a novel approach to multi-agent reinforcement learning (RL) for linear systems with convex polytopic constraints. Existing work on RL has demonstrated the use of model predictive control (MPC) as a function approximator for the policy and value functions. The current paper is the first work to extend this idea to the multi-agent setting. We propose the use of a distributed MPC scheme as a function approximator, with a structure allowing for distributed learning and deploymen…

Valeur des tests PACE et CTB_ELISA dans le diagnostic de la peste porcine classique (PPC) et le contr{\^o}le de qualit{\'e} du vaccin correspondant {\`a} Madagascar
Of Maminiaina (FOFIFA-DRZVP, IMVAVET), M. Koko (IMVAVET), J. J. Rajaonarison (IMVAVET), R. Razafindrakoto (IMVAVET), J. Ravaomanana (FOFIFA-DRZVP), A. D. Shannon
https://

Valeur des tests PACE et CTB_ELISA dans le diagnostic de la peste porcine classique (PPC) et le contr{ô}le de qualit{é} du vaccin correspondant {à} Madagascar
From 1994, we began to use ELISA (Enzyme Linked Immunosorbent Assay) in the diagnosis of PCP. This is aELISA for capturing antigens (PACE) possibly contained in the samples. The advantage of this test comes from the fact that it is completelyindependent of cell cultures. In addition, it is fast: the result can be obtained in less than 36 hours. A study of its standardizationcarried out in Australia gave a sensitivity (Se) of 99%, a specificity (Sp) close to 100% and a negative predictive value …

This https://arxiv.org/abs/2204.10236 has been replaced.
link: https://scholar.google.com/scholar?q=a

The average size of maximal matchings in graphs
We investigate the ratio $\avM(G)$ of the average size of a maximal matching to the size of a maximum matching in a graph $G$. If many maximal matchings have a size close to $\maxM(G)$, this graph invariant has a value close to 1. Conversely, if many maximal matchings have a small size, $\avM(G)$ approaches $\frac{1}{2}$. We propose a general technique to determine the asymptotic behavior of $\avM(G)$ for various classes of graphs. To illustrate the use of this technique, we first show how it…

This https://arxiv.org/abs/2304.08410 has been replaced.
link: https://scholar.google.com/scholar?q=a

About the Expressive Power and Complexity of Order-Invariance with Two Variables
Order-invariant first-order logic is an extension of first-order logic (FO) where formulae can make use of a linear order on the structures, under the proviso that they are order-invariant, i.e. that their truth value is the same for all linear orders. We continue the study of the two-variable fragment of order-invariant first-order logic initiated by Zeume and Harwath, and study its complexity and expressive power. We first establish coNExpTime-completeness for the problem of deciding if a giv…

Calling Betteridge's Law on this one..
#BetteridgesLaw

A survey of LSM-Tree based Indexes, Data Systems and KV-stores
Supriya Mishra
https://arxiv.org/abs/2402.10460 https://arxiv.org/pdf/…

A survey of LSM-Tree based Indexes, Data Systems and KV-stores
Modern databases typically makes use of the Log Structured Merge-Tree for organizing data in indexes, which is a kind of disk-based data structure. It was proposed to efficiently handle frequent update queries (also called update intensive workloads) databases. In recent years, LSM-Tree has gained popularity and has been adopted by a number of NoSql databases, and key-value stores. Since LSM-Tree was first proposed, researchers and the database community started efforts to improve different com…

Opinion dynamics on signed graphs and graphons: Beyond the piece-wise constant case
Paolo Frasca, Federica Garin, Raoul Prisant
https://arxiv.org/abs/2404.08372

Opinion dynamics on signed graphs and graphons: Beyond the piece-wise constant case
In this paper we make use of graphon theory to study opinion dynamics on large networks. The opinion dynamics models that we take into consideration allow for negative interactions between the individual, i.e. competing entities whose opinions can grow apart. We consider both the repelling model and the opposing model that are studied in the literature. We define the repelling and the opposing dynamics on graphons and we show that their initial value problem's solutions exist and are unique. We…

The Boosted Difference of Convex Functions Algorithm for Value-at-Risk Constrained Portfolio Optimization
Marah-Lisanne Thormann, Phan Tu Vuong, Alain B. Zemkoho
https://arxiv.org/abs/2402.09194

The Boosted Difference of Convex Functions Algorithm for Value-at-Risk Constrained Portfolio Optimization
A highly relevant problem of modern finance is the design of Value-at-Risk (VaR) optimal portfolios. Due to contemporary financial regulations, banks and other financial institutions are tied to use the risk measure to control their credit, market and operational risks. For a portfolio with a discrete return distribution and finitely many scenarios, a Difference of Convex (DC) functions representation of the VaR can be derived. Wozabal (2012) showed that this yields a solution to a VaR constrai…

Machine learning assisted prediction of organic salt structure properties
Ethan P. Shapera, Dejan-Kre\v{s}imir Bu\v{c}ar, Rohit P. Prasankumar, Christoph Heil
https://arxiv.org/abs/2402.09128

Machine learning assisted prediction of organic salt structure properties
We demonstrate a machine learning-based approach which predicts the properties of crystal structures following relaxation based on the unrelaxed structure. Use of crystal graph singular values reduces the number of features required to describe a crystal by more than an order of magnitude compared to the full crystal graph representation. We construct machine learning models using the crystal graph singular value representations in order to predict the volume, enthalpy per atom, and metal versu…

This https://arxiv.org/abs/2312.08369 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_sta…

The Effective Horizon Explains Deep RL Performance in Stochastic Environments
Reinforcement learning (RL) theory has largely focused on proving minimax sample complexity bounds. These require strategic exploration algorithms that use relatively limited function classes for representing the policy or value function. Our goal is to explain why deep RL algorithms often perform well in practice, despite using random exploration and much more expressive function classes like neural networks. Our work arrives at an explanation by showing that many stochastic MDPs can be solved…

No-Regret Algorithms in non-Truthful Auctions with Budget and ROI Constraints
Gagan Aggarwal, Giannis Fikioris, Mingfei Zhao
https://arxiv.org/abs/2404.09832

No-Regret Algorithms in non-Truthful Auctions with Budget and ROI Constraints
Advertisers increasingly use automated bidding to optimize their ad campaigns on online advertising platforms. Autobidding optimizes an advertiser's objective subject to various constraints, e.g. average ROI and budget constraints. In this paper, we study the problem of designing online autobidding algorithms to optimize value subject to ROI and budget constraints when the platform is running any mixture of first and second price auction. We consider the following stochastic setting: There is…

This https://arxiv.org/abs/2312.11661 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Weighted Versions of the Arithmetic-Mean-Geometric Mean Inequality and Zaremba's Function
We use the weighted version of the arithmetic-mean-geometric-mean inequality to motivate new results about Zaremba's function, $z(n) = \sum_{d|n} \frac{\log d}{d}$. We investigate record-setting values for $z(n)$ and the related function $v(n) = \frac{z(n)}{\log τ(n)}$ where $τ(n)$ is the number of divisors of $n$. We show that $v(n)$ takes on a maximum value and we give a list of all record-setting values for$v(n)$. Closely connected inequalities motivate the study of numbers which are …

This https://arxiv.org/abs/2009.13085 has been replaced.
link: https://scholar.google.com/scholar?q=a

Existence and Uniqueness of viscosity solutions of Value function of Local Cahn-Hilliard-Navier-Stokes system
In this work, we consider the local Cahn-Hilliard-Navier-Stokes equation with regular potential in two dimensional bounded domain. We formulate distributed optimal control problem as the minimization of a suitable cost functional subject to the controlled local Cahn-Hilliard-Navier- Stokes system and define the associated value function. We prove the Dynamic Programming Principle satisfied by the value function. Due to the lack of smoothness properties for the value function, we use the method …

I'm all in favour of taxing the living daylights out of Elmo and his pals, but it always makes me feel queasy when I get the impression that people think you could actually translate the market value of Tesla and SpaceX into cash and use it to feed the poor. Much of that is just fantasy money. If you think it's real you've been exposed to finance news for too long or something.

This https://arxiv.org/abs/2304.15000 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csPL_…

Quantum Control Machine: The Limits of Control Flow in Quantum Programming
Quantum algorithms for tasks such as factorization, search, and simulation rely on control flow such as branching and iteration that depends on the value of data in superposition. High-level programming abstractions for control flow, such as switches, loops, and higher-order functions, are ubiquitous in classical languages. By contrast, many quantum languages do not provide high-level abstractions for control flow in superposition, and instead require the use of hardware-level logic gates to im…

This https://arxiv.org/abs/2312.11661 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Weighted Versions of the Arithmetic-Mean-Geometric Mean Inequality and Zaremba's Function
We use the weighted version of the arithmetic-mean-geometric-mean inequality to motivate new results about Zaremba's function, $z(n) = \sum_{d|n} \frac{\log d}{d}$. We investigate record-setting values for $z(n)$ and the related function $v(n) = \frac{z(n)}{\log τ(n)}$ where $τ(n)$ is the number of divisors of $n$. We show that $v(n)$ takes on a maximum value and we give a list of all record-setting values for$v(n)$. Closely connected inequalities motivate the study of numbers which are …

Valeur des tests PACE et CTB_ELISA dans le diagnostic de la peste porcine classique (PPC) et le contr{\^o}le de qualit{\'e} du vaccin correspondant {\`a} Madagascar
Of Maminiaina (FOFIFA-DRZVP, IMVAVET), M. Koko (IMVAVET), J. J. Rajaonarison (IMVAVET), R. Razafindrakoto (IMVAVET), J. Ravaomanana (FOFIFA-DRZVP), A. D. Shannon
https://

Valeur des tests PACE et CTB_ELISA dans le diagnostic de la peste porcine classique (PPC) et le contr{ô}le de qualit{é} du vaccin correspondant {à} Madagascar
From 1994, we began to use ELISA (Enzyme Linked Immunosorbent Assay) in the diagnosis of PCP. This is aELISA for capturing antigens (PACE) possibly contained in the samples. The advantage of this test comes from the fact that it is completelyindependent of cell cultures. In addition, it is fast: the result can be obtained in less than 36 hours. A study of its standardizationcarried out in Australia gave a sensitivity (Se) of 99%, a specificity (Sp) close to 100% and a negative predictive value …

A first determination of the strong coupling $\alpha_S$ at approximate N$^{3}$LO order in a global PDF fit
T. Cridge, L. A. Harland-Lang, R. S. Thorne
https://arxiv.org/abs/2404.02964

A first determination of the strong coupling $α_S$ at approximate N$^{3}$LO order in a global PDF fit
We present the first determination of the value of the strong coupling via a simultaneous global fit of the proton parton distribution functions (PDFs) at approximate N$^{3}$LO (aN$^{3}$LO) order in QCD. This makes use of the MSHT global PDF fitting framework, and in particular the recent theoretical advances that allow a PDF fit to now be performed at this order. The value of the strong coupling is found to be $α_S(M_Z^2)$(aN$^{3}$LO)$ = 0.1170 \pm 0.0016$. This is in excellent agreement with…

This https://arxiv.org/abs/1103.5906 has been replaced.
link: https://scholar.google.com/scholar?q=a<…

Torsion groups of elliptic curves over quadratic fields
We describe methods to determine all the possible torsion groups of an elliptic curve that actually appear over a fixed quadratic field. We use these methods to find, for each group that can appear over a quadratic field, the field with the smallest absolute value of it's discriminant such that there exists an elliptic curve with that torsion. We also examine the interplay of the torsion and rank over a fixed quadratic field and see that what happens is very different than over $\Q$. Finally we…

This https://arxiv.org/abs/2401.07068 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Determining time-dependent convection and density terms in convection-diffusion equation using partial data
In this article, we study an inverse boundary value problem for the time-dependent convection-diffusion equation. We use the nonlinear Carleman weight to recover the time-dependent convection term and time-dependent density coefficient uniquely. Nonlinear weight allows us to prove the uniqueness of the coefficients by making measurements on a possibly very small subset of the boundary. We proved that the convection term and the density coefficient can be recovered up to the natural gauge from t…

On the universal validity of Case B recombination theory
C. Scarlata, M. Hayes, N. Panagia, V. Mehta, F. Haardt, M. Bagley
https://arxiv.org/abs/2404.09015

On the universal validity of Case B recombination theory
In an ongoing search for low-mass extreme emission line galaxies, we identified a galaxy with a Ha/Hb Balmer line ratio of 2.620 +- 0.078. Ha/Hb Balmer ratios lower than the dust-free Case~B value appear relatively frequently in extreme emission line galaxies. These low values suggest that the Case~B assumption may not be valid in these objects. After ruling out the possibility that the low Ha/Hb ratio is due to systematic errors introduced by observational effects, we use constraints from the …

Two-sided Assortment Optimization: Adaptivity Gaps and Approximation Algorithms
Omar El Housni, Alfredo Torrico, Ulysse Hennebelle
https://arxiv.org/abs/2403.08929

Two-sided Assortment Optimization: Adaptivity Gaps and Approximation Algorithms
To address the challenge of choice congestion in matching markets, in this work, we introduce a two-sided assortment optimization framework under general choice preferences. The goal in this problem is to maximize the expected number of matches by deciding which assortments are displayed to the agents and the order in which they are shown. In this context, we identify several classes of policies that platforms can use in their design. Our goals are: (1) to measure the value that one class of po…

This https://arxiv.org/abs/2401.07068 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Determining time-dependent convection and density terms in convection-diffusion equation using partial data
In this article, we study an inverse boundary value problem for the time-dependent convection-diffusion equation. We use the nonlinear Carleman weight to recover the time-dependent convection term and time-dependent density coefficient uniquely. Nonlinear weight allows us to prove the uniqueness of the coefficients by making measurements on a possibly very small subset of the boundary. We proved that the convection term and the density coefficient can be recovered up to the natural gauge from t…

This https://arxiv.org/abs/2305.05031 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Fast randomized algorithms for computing the generalized tensor SVD based on the tubal product
This work deals with developing two fast randomized algorithms for computing the generalized tensor singular value decomposition (GTSVD) based on the tubal product (t-product). The random projection method is utilized to compute the important actions of the underlying data tensors and use them to get small sketches of the original data tensors, which are easier to be handled. Due to the small size of the sketch tensors, deterministic approaches are applied to them to compute their GTSVDs. Then,…

This https://arxiv.org/abs/2211.13566 has been replaced.
link: https://scholar.google.com/scholar?q=a

Randomized gradient-free methods in convex optimization
This review presents modern gradient-free methods to solve convex optimization problems. By gradient-free methods, we mean those that use only (noisy) realizations of the objective value. We are motivated by various applications where gradient information is prohibitively expensive or even unavailable. We mainly focus on three criteria: oracle complexity, iteration complexity, and the maximum permissible noise level.

This https://arxiv.org/abs/2312.15117 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

On partitions with bounded largest part and fixed integral GBG-rank modulo primes
In 2009, Berkovich and Garvan introduced a new partition statistic called the GBG-rank modulo $t$ which is a generalization of the well-known BG-rank. In this paper, we use the Littlewood decomposition of partitions to study partitions with bounded largest part and fixed integral value of GBG-rank modulo primes. As a consequence, we obtain new elegant generating function formulas for unrestricted partitions, self-conjugate partitions, and partitions whose parts repeat finite number of times.

This https://arxiv.org/abs/2207.07698 has been replaced.
link: https://scholar.google.com/scholar?q=a

Quasi-Monte Carlo and discontinuous Galerkin
In this study, we consider the development of tailored quasi-Monte Carlo (QMC) cubatures for non-conforming discontinuous Galerkin (DG) approximations of elliptic partial differential equations (PDEs) with random coefficients. We consider both the affine and uniform and the lognormal models for the input random field, and investigate the use of QMC cubatures to approximate the expected value of the PDE response subject to input uncertainty. In particular, we prove that the resulting QMC converg…

A single shooting method with approximate Fr\'{e}chet derivative for computing geodesics on the Stiefel manifold
Marco Sutti
https://arxiv.org/abs/2404.04089

A single shooting method with approximate Fréchet derivative for computing geodesics on the Stiefel manifold
This paper shows how to use the shooting method, a classical numerical algorithm for solving boundary value problems, to compute the Riemannian distance on the Stiefel manifold $ \mathrm{St}(n,p) $, the set of $ n \times p $ matrices with orthonormal columns. The proposed method is a shooting method in the sense of the classical shooting methods for solving boundary value problems; see, e.g., Stoer and Bulirsch, 1991. The main feature is that we provide an approximate formula for the Fréchet d…