====== Marina Gomtsyan ======

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Postdoctoral researcher in statistics, working on the analysis of spatial inequalities in intergenerational social mobility in France, \\ with [[https://www.lpsm.paris/users/fischer/index|Aurélie Fischer]] and [[https://www.gemass.fr/member/jayet-cyril/|Cyril Jayet]]. My postdoc is part of [[https://anr.fr/en/funded-projects-and-impact/funded-projects/project/funded/project/b2d9d3668f92a3b9fbbf7866072501ef-f0cb9149c1/?tx_anrprojects_funded%5Bcontroller%5D=Funded&cHash=e806481643cd646ebb8628f48f57593d|MOSIS]]—a project founded by French National Research Agency. 

I completed my PhD in MIA Paris-Saclay (AgroParisTech, University of Paris-Saclay) under the supervision of [[https://sites.google.com/view/pagewebdecelinelevyleduc/|Céline Lévy-Leduc]], \\ [[https://www.lpsm.paris/users/ouadah/index|Sarah Ouadah]] and [[https://mia-ps.inrae.fr/laure-sansonnet|Laure Sansonnet]]. I worked on variable selection methods in sparse GLARMA models.\\
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Email: [[mgomtsian@lpsm.paris|mgomtsian@lpsm.paris]]

For more information: {{ :users:mgomtsian:cv_marina_gomtsyan.pdf|CV}}
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=== Research interests ===
  * Variable selection, sparsity, regularised methods
  * Time series, count data, dependencies
  * Contingency tables, categorical data
  * Applications in genomics and social sciences

=== Publications and preprints ===

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  * C. Jayet, M. Gomtsyan, R. Perrier, A. Fischer, F. Gargiulo, M. Lenormand. {{ |Moving worlds apart: Exploring social and spatial mobility through spatial networks}}. //Submitted// (2026)
  * C. Jayet, M. Gomtsyan, A. Fischer, F. Gargiulo, M. Lenormand. {{ :users:mgomtsian:geography_mobility.pdf |The geography of social class mobility in France : A multidimensional approach}}. //Submitted// (2025)
  * M. Gomtsyan, C. Lévy-Leduc, S. Ouadah, L. Sansonnet, C. Bailly, L. Rajjou. [[https://link.springer.com/article/10.1007/s10260-025-00786-0?utm_source=rct_congratemailt&utm_medium=email&utm_campaign=nonoa_20250429&utm_content=10.1007/s10260-025-00786-0|Variable selection in sparse multivariate GLARMA models: Application to germination control by environment]]. //Statistical Methods & Applications (34), 291–324// (2025)
  * M. Gomtsyan, C. Lévy-Leduc, S. Ouadah, L. Sansonnet. [[https://www.sciencedirect.com/science/article/pii/S0167715224000762|Sign-consistent estimation in a sparse Poisson model]]. //Statistics & Probability Letters 209, 110107// (2024)
  * M. Gomtsyan (2024). [[https://arxiv.org/abs/2307.00929|Variable selection in a specific regression time series of counts]]. //arXiv:2307.00929//
  * M. Gomtsyan, C. Lévy-Leduc, S. Ouadah, L. Sansonnet, T. Blein. [[https://www.tandfonline.com/doi/full/10.1080/02331888.2022.2090943|Variable selection in sparse GLARMA models]]. //Statistics 56(4), 755–784// (2022)
  * M. Gomtsyan, N. Mokrov, M. Panov, Y. Yanovich. [[https://proceedings.mlr.press/v101/gomtsyan19a.html|Geometry-Aware Maximum Likelihood Estimation of Intrinsic Dimension]]. //Proceedings of The Eleventh Asian Conference on Machine Learning, PMLR 101:1126-1141// (2019)
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=== R Packages ===
  * M. Gomtsyan (2023). [[https://cran.r-project.org/web/packages/NBtsVarSel/index.html|NBtsVarSel: Variable Selection in a Specific Regression Time Series of Counts]]
  * M. Gomtsyan (2022). [[https://cran.r-project.org/web/packages/MultiGlarmaVarSel/index.html|MultiGlarmaVarSel: Variable selection in sparse multivariate GLARMA models]]
  * M. Gomtsyan, C. Lévy-Leduc, S. Ouadah, L. Sansonnet (2021). [[https://cran.r-project.org/web/packages/GlarmaVarSel/index.html|GlarmaVarSel: Variable selection in sparse GLARMA models]]



 ===== Enseignement =====

 === Analyse des données (M1 ISIFAR) ===
   * {{ :users:mgomtsian:td1.zip|TD 1}}

 === Apprentissage statistique (M2 ISIFAR) ===
   * {{ :users:mgomtsian:tP1.pdf|TP 1}}