Sophie Hautphenne

A fluid approach to total-progeny-dependent birth-and-death processes

S Hautphenne, M Li

Journal article  |  2023  |  Stochastic Models

We introduce a class of branching processes in which the reproduction or lifetime distribution at a given time depends on the tota..

Parameter estimation in branching processes with almost sure extinction

Peter Braunsteins, Sophie Hautphenne, Carmen Minuesa

Journal article  |  2022  |  BERNOULLI

We consider population-size-dependent branching processes (PSDBPs) which eventually become extinct with probability one. For these..

Extinction probabilities in branching processes with countably many types: a general framework

Daniela Bertacchi, Peter Braunsteins, Sophie Hautphenne, Fabio Zucca

Journal article  |  2022  |  ALEA-LATIN AMERICAN JOURNAL OF PROBABILITY AND MATHEMATICAL STATISTICS

We consider Galton–Watson branching processes with countable typeset X. We study the vectors (Formula Presented) recording the con..

Parameter estimation for multivariate population processes: a saddlepoint approach

Mathisca de Gunst, Sophie Hautphenne, Michel Mandjes, Birgit Sollie

Journal article  |  2020  |  STOCHASTIC MODELS

The setting considered in this paper concerns a discrete-time multivariate population process under Markov modulation. Our objecti..

THE PROBABILITIES OF EXTINCTION IN A BRANCHING RANDOM WALK ON A STRIP

Peter Braunsteins, Sophie Hautphenne

Journal article  |  2020  |  JOURNAL OF APPLIED PROBABILITY

We consider a class of multitype Galton-Watson branching processes with a countably infinite type set whose mean progeny matrices ..

Parameter estimation for discretely observed linear birth-and-death processes

AC Davison, S Hautphenne, A Kraus

Journal article  |  2020  |  BIOMETRICS

Birth-and-death processes are widely used to model the development of biological populations. Although they are relatively simple ..

Preface

Sophie Hautphenne, Malgorzata M O'Reilly, Federico Poloni

Journal article  |  2020  |  STOCHASTIC MODELS

Linking micro and macroevolution in the presence of migration

Pablo Duchen, Sophie Hautphenne, Laurent Lehmann, Nicolas Salamin

Journal article  |  2020  |  JOURNAL OF THEORETICAL BIOLOGY

Understanding macroevolutionary patterns is central to evolutionary biology. This involves the process of divergence within a spec..

A LOW-RANK TECHNIQUE FOR COMPUTING THE QUASI-STATIONARY DISTRIBUTION OF SUBCRITICAL GALTON-WATSON PROCESSES

Sophie Hautphenne, Stefano Massei

Journal article  |  2020  |  SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS

We present a new algorithm for computing the quasi-stationary distribution of subcritical Galton--Watson branching processes. This..

EXTINCTION IN LOWER HESSENBERG BRANCHING PROCESSES WITH COUNTABLY MANY TYPES

Peter Braunsteins, Sophie Hautphenne

Journal article  |  2019  |  ANNALS OF APPLIED PROBABILITY

We consider a class of branching processes with countably many types which we refer to as Lower Hessenberg branching processes. Th..