boennecd
Benjamin Christoffersen
Recently Published
Joint models with multiple markers and multiple time-to-event outcomes using variational approximations
Presentation on the VAJointSurv package at Copenhagen Business School, Department of Finance/Center for Statistics.
Genetic and Environmental Effects Estimation Using the pedmod Package
Presentation at the Section of Biostatistics at the University of Copenhagen on the pedmod package.
Joint models with multiple markers and multiple time-to-event outcomes using variational approximations
Seminar at University of Copenhagen in Section of Biostatistics on the VAJointSurv package.
Mixed Competing Risk Models
Presentation on mixed competing risk models at a group meeting at KTH.
Estimating Joint Survival and Marker Models with Variational Approximations
Presentation on estimating joint survival and marker models
with variational approximations at the biostat group at KI.
Computational Concerns with Mixed Models
Presentation at a group meeting on applications of the Laplace approximation, Gaussian quadrature, Monte Carlo, importance sampling, quasi-Monte Carlo, and variational approximations to estimate mixed models.
Asymptotically Exact and Fast Gaussian Copula Models for Imputation of Mixed Data Types
Presentation of the paper "Asymptotically Exact and Fast Gaussian Copula Models for Imputation of Mixed Data Types" at ACML.
Variational Approximations in Survival Analysis
SeRC meeting 2021
Estimating Joint Survival and Marker Models with Variational Approximations
Presentation at group meeting at KTH on application of variational approximations to joint survival and marker models.
Genetic and Environmental Effects Estimation Using Multi-generation Registers
Presentation about the pedmod package.
Mixed Effect Models for Pedigree Data Application of Randomized Quasi-Monte Carlo
Presentation in the spring of 2021 on the use of the pedmod package to estimate GLMM's for binary data.
Fast Estimation of Random Effect Models Using Quasi-Newton Methods with Variational Approximations
Presentation at the the Swedish Network for Register-Based Research's spring meeting in 2021 on the psqn package and its applications to variational approximations.
Mixed Effect Models for Pedigree Data: Application of Randomized Quasi-Monte Carlo
Presentation at MEB in the winter 2020.
Gaussian Variational Approximations for GLMMs: An Application of the psqn Package
Presentation at KTH group meetings on Gaussian variational approximation for generalized linear mixed models using the psqn package.
Modeling Frailty Correlated Defaults with Multivariate Latent Factors
Presentation of the Modeling Frailty Correlated Defaults with Multivariate Latent Factors paper at the First Credit Scoring and Credit Rating Conference.
Imputation Using Gaussian Copulas Using Quasi-Random Numbers
Presentation on the mdgc package for missing data imputation.
Example of Using the SimSurvNMarker Package
A simulation study to check if the SimSurvNMarker package simulates from the correct model.
PhD work-in-progress 2019
Presentation of Modeling Frailty Correlated Defaults with Multivariate Latent Factors paper.
