Results 81 to 90 of about 34,016,939 (394)
Measures of Model Risk in Continuous-time Finance Models [PDF]
arXiv, 2020 Measuring model risk is required by regulators on financial and insurance markets. We separate model risk into parameter estimation risk and model specification risk, and we propose expected shortfall type model risk measures applied to Levy jump models and affine jump-diffusion models.
arxiv
Network topology drives population temporal variability in experimental habitat networks
Population Ecology, EarlyView.Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu +3 more
wiley +1 more source
Frontiers in Genetics, 2022 Ferroptosis exerts a pivotal role in the formation and dissemination processes of hepatocellular carcinoma (HCC). The heterogeneity of ferroptosis and the link between ferroptosis and immune responses have remained elusive.
Wenli Li +5 more
doaj +1 more source
Exponential bounds of ruin probabilities for non-homogeneous risk models [PDF]
arXiv, 2020 Lundberg-type inequalities for ruin probabilities of non-homogeneous risk models are presented in this paper. By employing martingale method, the upper bounds of ruin probabilities are obtained for the general risk models under weak assumptions. In addition, several risk models, including the newly defined united risk model and quasi-periodic risk ...
arxiv
Annals of Surgery, 2016 Objectives:Incisional hernia (IH) remains a common, highly morbid, and costly complication. Modest progress has been realized in surgical technique and mesh technology; however, few advances have been achieved toward understanding risk and prevention. In
J. Fischer +7 more
semanticscholar +1 more source
A bivariate risk model with mutual deficit coverage [PDF]
, 2015 We consider a bivariate Cramer-Lundberg-type risk reserve process with the special feature that each insurance company agrees to cover the deficit of the other.
Boxma, Onno, Ivanovs, Jevgenijs
core +2 more sources
Dendritic cells steering antigen and leukocyte traffic in lymph nodes
FEBS Letters, EarlyView.Dendritic cells are key players in the activation of T cells and their commitment to effector function. In this In a Nutshell Review, we will discuss how dendritic cells guide the trafficking of antigen and leukocytes in the lymph node, thus influencing T‐cell activation processes. Dendritic cells (DCs) play a central role in initiating and shaping the
Enrico Dotta +3 more
wiley +1 more source
Online Investor Sentiment via Machine Learning
MathematicsIn this paper, we propose utilizing machine learning methods to determine the expected aggregated stock market risk premium based on online investor sentiment and employing the multifold forward-validation method to select the relevant hyperparameters ...
Zongwu Cai, Pixiong Chen
doaj +1 more source
Frontiers in Genetics, 2020 Background and PurposeHead and neck squamous carcinoma (HNSCC), characterized by immunosuppression, is a group of highly heterogeneous cancers. Although immunotherapy exerts a promising influence on HNSCC, the response rate remains low and varies in ...
Xingyu Liu +13 more
doaj +1 more source
COMPERA 2.0: a refined four-stratum risk assessment model for pulmonary arterial hypertension
European Respiratory Journal, 2021 Background Risk stratification plays an essential role in the management of patients with pulmonary arterial hypertension (PAH). The current European guidelines propose a three-stratum model to categorise risk as low, intermediate or high, based on the ...
M. Hoeper +32 more
semanticscholar +1 more source