8 citations · 34 across the 12 of their papers we have counts for
13 papers
Thompson Sampling for Linear Bandit Problems with Normal-Gamma Priors
Björn Lindenberg, Karl-Olof Lindahl
We consider Thompson sampling for linear bandit problems with finitely many independent arms, where rewards are sampled from normal distributions that are linearly dependent on unk…
Conjugated Discrete Distributions for Distributional Reinforcement Learning
Björn Lindenberg, Jonas Nordqvist, Karl-Olof Lindahl
In this work we continue to build upon recent advances in reinforcement learning for finite Markov processes. A common approach among previous existing algorithms, both single-acto…
Distributional Reinforcement Learning with Ensembles
Björn Lindenberg, Jonas Nordqvist, Karl-Olof Lindahl
It is well known that ensemble methods often provide enhanced performance in reinforcement learning. In this paper, we explore this concept further by using group-aided training wi…
Geometric location of periodic points of 2-ramified power series
Karl-Olof Lindahl, Jonas Nordqvist
In this paper we study the geometric location of periodic points of power series defined over fields of prime characteristic . More specifically, we find a lower bound for the a…
Generic parabolic points are isolated in positive characteristic
Karl-Olof Lindahl, Juan Rivera-Letelier
We study analytic germs in one variable having a parabolic fixed point at the origin, over an ultrametric ground field of positive characteristic. It is conjectured that for such a…
The size of quadratic -adic linearization disks
Karl-Olof Lindahl
We find the exact radius of linearization disks at indifferent fixed points of quadratic maps in . We also show that the radius is invariant under power series pertur…
Optimal cycles in ultrametric dynamics and minimally ramified power series
Karl-Olof Lindahl, Juan Rivera-Letelier
We study ultrametric germs in one variable having an irrationally indifferent fixed point at the origin with a prescribed multiplier. We show that for many values of the multiplier…
On hyperbolic fixed points in ultrametric dynamics
Karl-Olof Lindahl, Michael Zieve
Let K be a complete ultrametric field. We give lower and upper bounds for the size of linearization discs for power series over K near hyperbolic fixed points. These estimates are…
Divergence and convergence of conjugacies in non-Archimedean dynamics
Karl-Olof Lindahl
We continue the study in [21] of the linearizability near an indif- ferent fixed point of a power series f, defined over a field of prime characteristic p. It is known since the wo…
Linearization in ultrametric dynamics in fields of characteristic zero - equal characteristic case
Karl-Olof Lindahl
Let be a complete ultrametric field of charactersitic zero whose corresponding residue field is also of charactersitic zero. We give lower and upper bounds for the size…
Estimates of linearization discs in -adic dynamics with application to ergodicity
Karl-Olof Lindahl
We give lower bounds for the size of linearization discs for power series over . For quadratic maps, and certain power series containing a `sufficiently large' quadra…
On ergodic behavior of -adic dynamical systems
Matthias Gundlach, Andrei Khrennikov, Karl-Olof Lindahl
Monomial mappings, , are topologically transitive and ergodic with respect to Haar measure on the unit circle in the complex plane. In this paper we obtain an anologo…
On Markovian behaviour of -adic random dynamical systems
Sergio Albeverio, Matthias Gundlach, Andrei Khrennikov +1
We study Markovian and non-Markovian behaviour of stochastic processes generated by -adic random dynamical systems. Given a family of -adic monomial random mappings generatin…