![Henrik Bengtsson. Foto.](/sites/ehl.lu.se/files/styles/lu_personal_page_desktop/public/2024-05/HenrikBengtsson.jpg.webp?itok=ZGOQnnw1)
Henrik Bengtsson
Doktorand
![Henrik Bengtsson. Foto.](/sites/ehl.lu.se/files/styles/lu_personal_page_desktop/public/2024-05/HenrikBengtsson.jpg.webp?itok=ZGOQnnw1)
Characteristics of the switch process and geometric divisibility
Författare
Summary, in English
The switch process alternates independently between 1 and −1
, with the first switch to 1 occurring at the origin. The expected value function of this process is defined uniquely by the distribution of switching times. The relation between the two is implicitly described through the Laplace transform, which is difficult to use for determining if a given function is the expected value function of some switch process. We derive an explicit relation under the assumption of monotonicity of the expected value function. It is shown that geometric divisible switching time distributions correspond to a non-negative decreasing expected value function. Moreover, an explicit relation between the expected value of a switch process and the autocovariance function of the switch process stationary counterpart is obtained, leading to a new interpretation of the classical Pólya criterion for positive-definiteness.
, with the first switch to 1 occurring at the origin. The expected value function of this process is defined uniquely by the distribution of switching times. The relation between the two is implicitly described through the Laplace transform, which is difficult to use for determining if a given function is the expected value function of some switch process. We derive an explicit relation under the assumption of monotonicity of the expected value function. It is shown that geometric divisible switching time distributions correspond to a non-negative decreasing expected value function. Moreover, an explicit relation between the expected value of a switch process and the autocovariance function of the switch process stationary counterpart is obtained, leading to a new interpretation of the classical Pólya criterion for positive-definiteness.
Avdelning/ar
- Statistiska institutionen
Publiceringsår
2023-11-06
Språk
Engelska
Sidor
1-8
Publikation/Tidskrift/Serie
Journal of Applied Probability
Dokumenttyp
Artikel i tidskrift
Förlag
Applied Probability Trust
Ämne
- Probability Theory and Statistics
Nyckelord
- Renewal theory
- geometric divisibility
- binary processes
Aktiv
Epub
ISBN/ISSN/Övrigt
- ISSN: 1475-6072