Tootfinder

Essentially Sharp Estimates on the Entropy Regularization Error in Discrete Discounted Markov Decision Processes
Johannes M\"uller, Semih Cayci
https://arxiv.org/abs/2406.04163

Essentially Sharp Estimates on the Entropy Regularization Error in Discrete Discounted Markov Decision Processes
We study the error introduced by entropy regularization of infinite-horizon discrete discounted Markov decision processes. We show that this error decreases exponentially in the inverse regularization strength both in a weighted KL-divergence and in value with a problem-specific exponent. We provide a lower bound matching our upper bound up to a polynomial factor. Our proof relies on the correspondence of the solutions of entropy-regularized Markov decision processes with gradient flows of the …

This https://arxiv.org/abs/2311.00582 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csGT_…

Minimally Modifying a Markov Game to Achieve Any Nash Equilibrium and Value
We study the game modification problem, where a benevolent game designer or a malevolent adversary modifies the reward function of a zero-sum Markov game so that a target deterministic or stochastic policy profile becomes the unique Markov perfect Nash equilibrium and has a value within a target range, in a way that minimizes the modification cost. We characterize the set of policy profiles that can be installed as the unique equilibrium of some game, and establish sufficient and necessary cond…

Identification of structural shocks in Bayesian VEC models with two-state Markov-switching heteroskedasticity
Justyna Wr\'oblewska, {\L}ukasz Kwiatkowski
https://arxiv.org/abs/2406.03053

Identification of structural shocks in Bayesian VEC models with two-state Markov-switching heteroskedasticity
We develop a Bayesian framework for cointegrated structural VAR models identified by two-state Markovian breaks in conditional covariances. The resulting structural VEC specification with Markov-switching heteroskedasticity (SVEC-MSH) is formulated in the so-called B-parameterization, in which the prior distribution is specified directly for the matrix of the instantaneous reactions of the endogenous variables to structural innovations. We discuss some caveats pertaining to the identification c…

Oh GitHub.
@… filed a discussion item (with @… confirming) and since I was bumping into it during a call today I also made a video:

Improper use of aria-description for hover card links · community · Discussion #127592
Select Topic Area Product Feedback Body Today, Github rolled out a change to the markup rendered for hover cards. In particular, they all now include the aria-description attribute whose value is s...

This https://arxiv.org/abs/2401.05118 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

On Escape rate for subshift with Markov measure
In this paper, we consider a subshift of finite type with Markov measure. By considering a union of cylinders as holes, we investigate the exponential growth rate of measure of points whose orbits do not escape into the hole over a fixed number of iterations. We present two formulations for this escape rate: one based on the spectral radius of the Hadamard product of a related adjacency matrix and the stochastic matrix with respect to which the Markov measure is defined, and the other utilizing…

Unite union refuses to endorse Labour's election manifesto - BBC News
https://www.bbc.co.uk/news/articles/c722zkj9ly8o

Unite union refuses to endorse Labour's election manifesto
Labour's biggest trade union backer is concerned workers' rights policies do not go far enough.

Moving beyond factional-point scoring | Morning Star
https://morningstaronline.co.uk/article/moving-beyond-factional-point-scoring

Moving beyond factional-point scoring
As Diane Abbott retains her ability to stand for Labour in the general election, it is a suitable juncture to consider racial issues and their complexities among different groups, says NICK WRIGHT

80 years ago, the D Day invasion began, to defeat Nazism and Fascism.
How shameful it will be if the far right makes significant gains in the European Parliament.
How shameful it is that the far right has already shifted the platforms of mainstream parties rightward.
How shameful too that fascism and ultra-nationalism has suplanted socialism in the former Soviet Union, whose peoples suffered so much from Nazi occupation and in the decisive fight back against the Nazis.

Spain adds itself to the proceedings against Israel for genocide at the ICJ.
España se suma al procedimiento contra Israel por genocidio en la Corte Internacional de Justicia
https://www.eldiario.es/internacional/espa

España se suma al procedimiento contra Israel iniciado por Sudáfrica en la Corte Internacional de Justicia
El ministro de Exteriores de España, José Manuel Albares, ha anunciado este jueves que España se sumará al procedimiento iniciado por Sudáfrica contra Israel en la Corte Internacional de Justicia por genocidio. "Tomamos esta decisión ante la continuación de la operación militar en Gaza", ha señalado el ministro. "Se sustancia en un documento en el que España expresa su intención de intervenir en el procedimiento y un apoyo a la labor del tribunal y muy especialmente a las medidas cau…

#ComputingFrustrations
Some years ago I set up a raspberry pi as a network attached file store, complete with a nightly backup to a second disk.
Works a treat.
But to occasionally reboot or access this headless machine I use VNC. Now they are withdrawing the free version. I don't begrudge paying a bit but my minimal use doesn't justify it.
So installed AnyD…