Results 11 to 20 of about 22,496 (241)

Two-sided optimal stopping for Lévy processes [PDF]

open access: yes, 2021
Infinite horizon optimal stopping problems for a Lévy processes with a two-sided reward function are considered. A two-sided verification theorem is presented in terms of the overall supremum and the overall infimum of the process.
Mordecki, Ernesto, Oliú Eguren, Facundo
core   +2 more sources

Pathwise inequalities for local time : applications to skorokhod embeddings and optimal stopping [PDF]

open access: yes, 2007
We develop a class of pathwise inequalities of the form H(B-t) >= M-t + F(L-t), where B-t is Brownian motion, L-t its local time at zero and M-t a local martingale.
Hobson, David (David G.)   +9 more
core   +1 more source

An algorithm to solve optimal stopping problems for onedimensional diffusions [PDF]

open access: yes, 2022
Considering a real-valued diffusion, a real-valued reward function and a positive discount rate, we provide an algorithm to solve the optimal stopping problem consisting in finding the optimal expected discounted reward and the optimal stopping time at ...
Mordecki, Ernesto, Crocce, Fabián
core   +2 more sources

Monte Carlo algorithms for optimal stopping and statistical learning

open access: yesThe Annals of Applied Probability, 2005
We extend the Longstaff-Schwartz algorithm for approximately solving optimal stopping problems on high-dimensional state spaces. We reformulate the optimal stopping problem for Markov processes in discrete time as a generalized statistical learning problem.
openaire   +3 more sources

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Some remarks on first passage of Lévy processes, the American put and pasting principles [PDF]

open access: yes, 2005
The purpose of this article is to provide, with the help of a fluctuation identity, a generic link between a number of known identities for the first passage time and overshoot above/below a fixed level of a Lévy process and the solution of Gerber and ...
Kyprianou, A. E., Alili, Larbi
core   +1 more source

An observational study to evaluate the awareness of drug treatment, prescription pattern, adverse drug reactions, and adherence in patients of major depressive disorder

open access: yesPerspectives in Clinical Research
Aims: Due to the paucity of studies in and out of India that dealt with treatment awareness of major depressive disorder (MDD), we decided to assess the awareness of MDD patients, and since adherence and awareness are linked to each other, we assessed ...
Urwashi Indrakumar Parmar   +6 more
doaj   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch   +13 more
wiley   +1 more source

Initial Development of a Multidimensional Computerized Adaptive Test for Intensive Longitudinal Assessment of Suicide Risk: Development and Usability Study

open access: yesJMIR Formative Research
BackgroundIntensive longitudinal designs support temporally granular study of processes, making methods like ecological momentary assessment (EMA) increasingly common in medical and behavioral science.
Kenneth McClure   +5 more
doaj   +1 more source

On sufficient statistics for optimal stopping problems of stochastic processes

open access: yesLithuanian Mathematical Journal, 1971
The abstracts (in two languages) can be found in the pdf file of the article. Original author name(s) and title in Russian and Lithuanian: Б. И. Григелионис. К вопросу о достаточных статистиках для задач об оптимальной остановке случайных процессов B. Grigelionis.
openaire   +2 more sources

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