Displaying 221 – 240 of 283

Showing per page

Thin and heavy tails in stochastic programming

Vlasta Kaňková, Michal Houda (2015)

Kybernetika

Optimization problems depending on a probability measure correspond to many applications. These problems can be static (single-stage), dynamic with finite (multi-stage) or infinite horizon, single- or multi-objective. It is necessary to have complete knowledge of the “underlying” probability measure if we are to solve the above-mentioned problems with precision. However this assumption is very rarely fulfilled (in applications) and consequently, problems have to be solved mostly on the basis of...

Topological algebras of random elements

Bertram M. Schreiber, M. Victoria Velasco (2016)

Studia Mathematica

Let L₀(Ω;A) be the Fréchet space of Bochner-measurable random variables with values in a unital complex Banach algebra A. We study L₀(Ω;A) as a topological algebra, investigating the notion of spectrum in L₀(Ω;A), the Jacobson radical, ideals, hulls and kernels. Several results on automatic continuity of homomorphisms are developed, including versions of well-known theorems of C. Rickart and B. E. Johnson.

Two dimensional probabilities with a given conditional structure

Josef Štěpán, Daniel Hlubinka (1999)

Kybernetika

A properly measurable set 𝒫 X × M 1 ( Y ) (where X , Y are Polish spaces and M 1 ( Y ) is the space of Borel probability measures on Y ) is considered. Given a probability distribution λ M 1 ( X ) the paper treats the problem of the existence of X × Y -valued random vector ( ξ , η ) for which ( ξ ) = λ and ( η | ξ = x ) 𝒫 x λ -almost surely that possesses moreover some other properties such as “ ( ξ , η ) has the maximal possible support” or “ ( η | ξ = x ) ’s are extremal...

Currently displaying 221 – 240 of 283