My talks

Overview talks

[1]	E. Riccietti, Structure exploiting hierarchical optimization methods, Overview seminar of my research, in Journée POPILS, INSA Lyon, 16/02/2024.
[2]	E. Riccietti, Second order methods for the solution of large-scale nonlinear noisy problems, Overview seminar of my PhD/postdoc research.
[3]	E. Riccietti, Levenberg-Marquardt methods for the solution of noisy nonlinear least squares problems in PhD defense, IRIT Toulouse, France, 26/02/2018.
[4]	E. Riccietti, Multilevel methods in optimization in Seminar at Avignon University, 29/09/2022.

Sparse matrix factorization

[1]	QT. Le, L. Zheng, E. Riccietti & R. Gribonval, Fixed support sparse matrix factorization in Sparse Days, Saint Girons, 20/06/2022-22/06/2022.
[2]	QT. Le, L. Zheng, E. Riccietti & R. Gribonval, Fixed support sparse matrix factorization: identifiability and tractability in LRMA workshop, Mons, Belgium, 15-16 September 2022.

Multilevel neural networks

[1]	S. Gratton, V. Mercier, E. Riccietti & Ph. Toint, Frequency aware training of Physics-Informed Neural Networks: a multilevel approach in Journée d'équipe EMS, Université d'Orleans, 12/09/2024.
[2]	V. Mercier, E. Riccietti, S. Gratton & P. Toint, Multilevel Physics Informed Neural Networks (MPINNs) in Journées SMAI MODE 2022, Limoges, 30/05/2022-03/06/2022.
[3]	V. Mercier, E. Riccietti, S. Gratton & P. Toint, Multilevel PINNs (MPINNs) in Crunch seminar, Brown university, 20/05/2022.
[4]	E. Riccietti, V. Mercier & S. Gratton, Multilevel PINNS for PDEs in 13th JLESC Workshop, 14/12/2021-16/12/2021.
[5]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, A multilevel training method for ANNs Application to PDEs solution in Computational Science Engineering, Data Science and Artificial Intelligence by Total R&D (MATHIAS), Serris, France, 14/10/2019-17/10/2019.
[6]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, Multilevel optimization methods for the training of artificial neural networks in FGS conference, Nice, France, 17/09/2019-20/09/2019 .
[7]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, High-order multilevel optimization methods and training of artificial neural networks in ICCOPT conference, Berlin, Germany, 05/08/2019-08/08/2019 .
[8]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, Solution of PDEs by Multilevel Artificial Neural Networks in OBA summer school, Veroli, Italy., 30/06/2019-06/07/2019 .
[9]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, High-order multilevel optimization methods and training of artificial neural networks in 2nd IMA and OR Society Conference,Birmingham, UK, 25/04/2019-26/04/2019 .
[10]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, High-order multilevel optimization strategies and their application to the training of artificial neural networks in Seminar SPOT, Toulouse, France, 11/03/2019 .
[11]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, High-order multilevel optimization strategies and their application to the training of artificial neural networks in Seminar at University of Manchester, UK, 06/11/2018.
[12]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, Multilevel optimization strategies for the training of ANNs and application to the solution of PDEs in MATHIAS 2018, Serris, France, 22/10/2018-24/10/2018.
[13]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, Artificial Neural Networks : scalable optimization methods for large-scale training problems in EURO 2018, Valencia, Spain, 08/07/2018-11/07/2018.
[14]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, Artificial Neural Networks : scalable optimization methods for large-scale training problems in ISMP 2018, Bordeaux, France, 01/07/2018-06/07/2018.
[15]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, Artificial Neural Networks : scalable optimization methods for large-scale training problems in Journée Deep Learning, IRIT, Toulouse, France, 26/06/2018.

Large scale optimization

[1]	E. Riccietti, Multilevel optimization methods in Seminaire du Laboratoire Jacques-Louis Lions, Sorbonne, Paris, 20/05/2022.
[2]	E. Riccietti, Optimization strategies to deal with large-scale problems: an opportunity for mixed precision? in Seminaire Taran, Rennes, 08/03/2022.
[3]	H. Calandra, S. Gratton, E. Riccietti & X. Vasseur, Second order optimization methods for the solution of large scale nonlinear noisy problems in PRIMO talk, online seminar, 15/10/2020.
[4]	S. Bellavia, S. Gratton & E. Riccietti, A Levenberg-Marquardt Method for Large-Scale Noisy Nonlinear Least Squares Problems in SIOPT 2017, Vancouver, Canada, 22/05/2017-25/05/2017.