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Approximation en champ moyen de processus de Hawkes généralisés
- Source :
- Stochastic Processes and their Applications, Stochastic Processes and their Applications, Elsevier, 2017, 127 (12), ⟨10.1016/j.spa.2017.02.012⟩
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- International audience; We generalize multivariate Hawkes processes mainly by including a dependence with respect to the age of the process, i.e. the delay since the last point. Within this class, we investigate the limit behaviour, when n goes to infinity, of a system of n mean-field interacting age-dependent Hawkes processes. We prove that such a system can be approximated by independent and identically distributed age dependent point processes interacting with their own mean intensity. This result generalizes the study performed by Delattre, Fournier and Hoffmann (2015). In continuity with the work of Chevallier et al. (2015), the second goal of this paper is to give a proper link between these generalized Hawkes processes as microscopic models of individual neurons and the age-structured system of partial differential equations introduced by Pakdaman, Perthame and Salort (2010) as macroscopic model of neurons.; Cet article propose d'étudier l'approximation en champ moyen de Processus de Hawkes généralisés dont l'intensité peut également dépendre de l'age du processus, c'est à dire le délai depuis le dernier point. Ce travail poursuit celui initié par Delattre, Fournier et Hoffmann en 2015.De plus, cette généralisation des processus de Hawkes est adaptée aux applications en neuroscience et est directement reliée, comme il est prouvé dans l'article, au système d'equation aux dérivées partielles introduit par Pakdaman, Perthame et Salort (2010) pour la modélisation de réseau de neurones.
- Subjects :
- Statistics and Probability
Independent and identically distributed random variables
Work (thermodynamics)
Class (set theory)
Interacting particle systems
Mean-field approximation
media_common.quotation_subject
[SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology
01 natural sciences
Point process
010104 statistics & probability
Mathematics - Analysis of PDEs
Renewal equation
FOS: Mathematics
[MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP]
Statistical physics
Limit (mathematics)
0101 mathematics
Hawkes process
Mathematics
media_common
Partial differential equation
Applied Mathematics
Probability (math.PR)
010102 general mathematics
2010 MSC: 60G55, 60F05, 60G57, 92B20
Infinity
Neural network
[MATH.MATH-PR]Mathematics [math]/Probability [math.PR]
Mean field theory
Modeling and Simulation
Mathematics - Probability
Analysis of PDEs (math.AP)
Subjects
Details
- Language :
- English
- ISSN :
- 03044149
- Database :
- OpenAIRE
- Journal :
- Stochastic Processes and their Applications, Stochastic Processes and their Applications, Elsevier, 2017, 127 (12), ⟨10.1016/j.spa.2017.02.012⟩
- Accession number :
- edsair.doi.dedup.....7ab9494bf6da078c4bc7718cd8893dbe
- Full Text :
- https://doi.org/10.1016/j.spa.2017.02.012⟩