Charles Johnson
13 February 2018 - 21 February 2018 -
Affiliation: College of William and Mary, U.S.A.
Venue: office 27, 3rd floor of the Mathematics Department Building
8.ª Jornada da Matemática
7 March 2018
Departamento de Matemática da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa (FCT NOVA)
Ilinka Dimitrova
12 March 2018 - 17 March 2018 -
Affiliation: Faculty of Mathematics and Natural Science, South-West University "Neot Rilski", Bulgaria
Venue: office 2, 3rd floor of the Mathematics Department Building
Jörg Koppitz
12 March 2018 - 22 March 2018 -
Affiliation: Institute of Mathematics, Potsdam University, Germany
Venue: office 2, 3rd floor of the Mathematics Department Building
Escola de Verão - MathIngenious 2018
27 June 2018 - 29 June 2018 -
Departamento de Matemática da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa (FCT NOVA)
11th European Conference on Mathematical and Theoretical Biology (ECMTB 2018)
23 July 2018 - 27 July 2018 -
The 11th European Conference on Mathematical and Theoretical Biology (ECMTB 2018) will be held in Lisbon, Portugal, from 23 to 27 July, 2018.
Escola de Verão de Matemática - MatNova2018
4 September 2018 - 8 September 2018 -
Departamento de Matemática da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa (FCT NOVA)
Miguel Ángel Fortes
9 September 2018 - 14 September 2018 -
Affiliation: University of Granada, Spain
Venue: office 2, 3rd floor of the Mathematics Department Building
Frank Coolen
8 October 2018 - 12 October 2018 -
Affiliation: Department of Mathematical Sciences, Durham University, Durham
Venue: office 2, 3rd floor of the Mathematics Department Building
Andrew Arana
21 October 2018 - 27 October 2018 -
Affiliation: Department of Philosophy, Université Paris 1 Panthéon-Sorbonne
Venue: office 2, 3rd floor of the Mathematics Department Building
Anupam Das
12 November 2018 - 16 November 2018 -
Affiliation: University of Copenhagen
Venue: office 2, 3rd floor of the Mathematics Department Building
Habib Ouerdiane
9 November 2018 - 19 November 2018 -
Affiliation: University of Tunis El Manar
Venue: office 18, 3rd floor of the Mathematics Department Building
Max Souza
19 November 2018 - 21 November 2018 -
Affiliation: Universidade Federal Fluminense
Venue: office 5, 3rd floor of the Mathematics Department Building
Alexander Tikhomirov
18 November 2018 - 24 November 2018 -
Affiliation: Komi Science Centre Ural Division, Russian Academy of Sciences, Department of Mathematics, Syktyvkar, Russian Federation and Syktyvkar State University
Venue: office 2, 3rd floor of the Mathematics Department Building
Thomas Blyth
22 November 2018 - 30 November 2018 -
Affiliation: University of St Andrews, UK
Venue: office 18, 3rd floor of the Mathematics Department Building
Jörg Koppitz
10 December 2018 - 14 December 2018 -
Affiliation: Institute of Mathematics, Potsdam University, Germany
Venue: office 18, 3rd floor of the Mathematics Department Building
Yuriy Karlovych
10 December 2018 - 21 December 2018 -
Affiliation: Centro de Investigación en Ciencias, Universidad Autónoma del Estado de Morelos (Cuernavaca, Morelos, México)
Venue: office 36, 3rd floor of the Mathematics Department Building
Ilinka Dimitrova
9 December 2018 - 15 December 2018 -
Affiliation: Faculty of Mathematics and Natural Science, South-West University "Neot Rilski", Bulgaria
Venue: office 18, 3rd floor of the Mathematics Department Building
Nadezhda Krasii
8 December 2018 - 15 December 2018 -
Affiliation:
Venue: office 2, 3rd floor of the Mathematics Department Building
Elvira Zappale
12 December 2018 - 19 December 2018 -
Affiliation: Università Degli Studi Di Salerno
Venue: office 35, 3rd floor of the Mathematics Department Building
Eugene Shargorodsky
17 December 2018 - 23 December 2018 -
Affiliation: King's College London
Venue: office 2, 3rd floor of the Mathematics Department Building
[VAn] Yuriy Karlovych
3 January 2019 - 14 January 2019 -
Affiliation: Centro de Investigación en Ciencias, Universidad Autónoma del Estado de Morelos (Cuernavaca, Morelos, México)
Venue: Office 2, 3rd floor of the Mathematics Department Building
Winter School Mathmasters
14 January 2019 - 18 January 2019 -
Departamento de Matemática da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa (FCT NOVA)
[VAn] Armando Neves
24 January 2019 - 7 February 2019 -
Affiliation: Departamento de Matemática, Federal University of Minas Gerais (UFMG), Brazil
Venue: Office 5, 3rd floor of the Mathematics Department Building
[VAL] Charles Johnson
18 February 2019 - 25 February 2019 -
Affiliation: College of William & Mary, USA
Venue: office 27, 3rd floor of the Mathematics Department Building
Meeting - Department of Life Sciences and the Department of Mathematics
26 February 2019
The purpose of this first DCV - DM Meeting was to present the research of both groups seeking to create new synergies in the area of biomathematics. The discussion was very dynamic with 25 researchers present. New meetings are already scheduled, in the form of more specific seminars. CMA as several researchers working on Mathematical Biology
[VAL] Ilinka Dimitrova
10 March 2019 - 16 March 2019 -
Affiliation: Faculty of Mathematics and Natural Science, South-West University "Neofit Rilski", Bulgaria
Venue: office 2, 3rd floor of the Mathematics Department Building
[LegM] Women in Statistics | Isabel Natário (CMA & DM, FCT NOVA)
20 March 2019 - 2:30 pm - 3:30 pm
[VAL] Jörg Koppitz
11 March 2019 - 22 March 2019 -
Affiliation: Institute of Mathematics, University of Potsdam, Germany
Venue: office 2, 3rd floor of the Mathematics Department Building
[LegM] Hypatia | Cecília Perdigão (CMA & DM, FCT NOVA)
17 April 2019 - 2:30 pm - 3:30 pm
[LegM] Ada Lovelace | Ana Luísa Custódio (CMA & DM, FCT NOVA)
29 May 2019 - 2:30 pm - 3:30 pm
[LegM] Maryam Mirzakhani | Ana Cristina Casimiro (CMA & DM, FCT NOVA)
19 June 2019 - 2:30 pm - 3:30 pm
[Visiting Researcher - SRM]: Inmaculada Barranco Chamorro
4 June 2019 - 19 June 2019 -
Affiliation: Department of Statistics and Operations Research, Institute of Mathematics,
University of Sevilha, Sevilha, Spain
Venue: office 18, 3rd floor of the Mathematics Department Building
[VAL] Wolfram Bentz
9 June 2019 - 22 June 2019 -
Affiliation: School of Mathematics and Physical Sciences, University of Hull, United Kingdom
Venue: office 6, 3rd floor of the Mathematics Department Building
[VAL] Peter Cameron
9 June 2019 - 15 June 2019 -
Affiliation: School of Mathematics and Statistics, University of St Andrews, United Kingdom
Venue: office 2, 3rd floor of the Mathematics Department Building
[VAL] Pablo Spiga
9 June 2019 - 15 June 2019 -
Affiliation: UNIMIB - Department of Mathematics and its Applications,
Università degli Studi di Milano-Bicocca, Milan, Italy
Venue: office 2, 3rd floor of the Mathematics Department Building
[Visiting Researcher - An]: Nicolas Privault
18 June 2019 - 5 July 2019 -
Affiliation: Division of Mathematical Sciences, Nanyang Technological University, Singapore
Venue: office 2, 3rd floor of the Mathematics Department Building
MathIngenious 2019
3 July 2019 - 5 July 2019 -
Department of Mathematics of NOVA School of Science and Technology (FCT NOVA)
IWOTA 2019 - International Workshop on Operator Theory and its Applications
22 July 2019 - 26 July 2019 -
The conference will be held from Monday July 22nd through Friday July 26th, at Instituto Superior Técnico, University of Lisbon, Portugal.
1st WM2 - Women in Mathematics Meeting
22 July 2019 - 24 July 2019 -
1st WM2 - Women in Mathematics Meeting The Women in Mathematics Meeting will take place at Faculdade de Ciências e Tecnologia of the Universidade Nova de Lisboa, Portugal, from 22 to 24 July.
[VAn] Armando Neves
20 July 2019 - 2 August 2019 -
Affiliation: Federal University of Minas Gerais, Brazil
Venue: office 5, 3rd floor of the Mathematics Department Building
[VAL] Jörg Koppitz
29 July 2019 - 2 August 2019 -
Affiliation: Institute of Mathematics, Potsdam University, Germany
Venue: office 18, 3rd floor of the Mathematics Department Building
[VOR] Jean Bigeon
30 July 2019 - 2 August 2019 -
Affiliation: Laboratoire G-SCOP, France
Venue: office 2, 3rd floor of the Mathematics Department Building
[VAL] Ilinka Dimitrova
28 July 2019 - 3 August 2019 -
Affiliation: Faculty of Mathematics and Natural Science, South-West University "Neofit Rilski", Bulgaria
Venue: office 18, 3rd floor of the Mathematics Department Building
Summer School MatNova 2019
3 September 2019 - 7 September 2019 -
Department of Mathematics of NOVA School of Science and Technology (FCT NOVA)
[VSRM] Fernando Ricardo
30 September 2019 - 4 October 2019 -
Affiliation: Departamento de Biologia e CESAM, University of Aveiro
Venue: office 18, 3rd floor of the Mathematics Department Building
[MBio] Mathematical Biology Day - Workshop I - Estatística em Biologia
9 October 2019 - 2:00 pm - 3:30 pm
Workshop*
Sessões nos dias 9/10 e 10/10, das 14h às 15h30, no laboratório 2.2 do edifício 7
Modelação Estatística em Biologia: Como lidar com a não-normalidade de dados contínuos, com dados discretos ou dados qualitativos?
Prof.ª Regina Bispo, Departamento de Matemática & Centro de Matemática e Aplicações, FCT Nova
Resumo: Neste workshop pretende-se abordar alguns aspetos iniciais da Modelação Estatística, em duas situações frequentemente encontradas na Biologia: (1) quando a variável resposta, cuja variação se pretende explicar, apesar de contínua, não tem distribuição Normal e (2) quando a variável resposta não é contínua, podendo nesse caso ser quer uma quantidade discreta (contagem) que uma qualidade binária. Serão apresentados alguns casos reais que servirão de ponto de partida para uma abordagem prática, utilizando o software R.
* O workshop destina-se a investigadores e alunos de final do 1º ciclo ou 2º ciclo das áreas de Matemática e Biologia
[Entrada livre mediante inscrição prévia obrigatória AQUI ]
[MBio] Mathematical Biology Day - Workshop II - Estatística em Biologia
10 October 2019 - 2:00 pm - 3:30 pm
Workshop*
Sessões nos dias 9/10 e 10/10, das 14h às 15h30, no laboratório 2.2 do edifício 7
Modelação Estatística em Biologia: Como lidar com a não-normalidade de dados contínuos, com dados discretos ou dados qualitativos?
Prof.ª Regina Bispo, Departamento de Matemática & Centro de Matemática e Aplicações, FCT Nova
Resumo: Neste workshop pretende-se abordar alguns aspetos iniciais da Modelação Estatística, em duas situações frequentemente encontradas na Biologia: (1) quando a variável resposta, cuja variação se pretende explicar, apesar de contínua, não tem distribuição Normal e (2) quando a variável resposta não é contínua, podendo nesse caso ser quer uma quantidade discreta (contagem) que uma qualidade binária. Serão apresentados alguns casos reais que servirão de ponto de partida para uma abordagem prática, utilizando o software R.
* O workshop destina-se a investigadores e alunos de final do 1º ciclo ou 2º ciclo das áreas de Matemática e Biologia
[Entrada livre mediante inscrição prévia obrigatória AQUI ]
[MBio] Mathematical Biology day
10 October 2019 - 3:30 pm - 4:30 pm
Mathematical Biology Day @ FCT NOVA
10/10/2019 Palestra
Dia 10/10, das 15h30 às 16h30, na sala de seminários do edifício 7
Título: Mathematical modeling: a fundamental tool in biology
Prof. Ruy Ribeiro, Laboratório de Biomatemática, Faculdade de Medicina da Universidade de Lisboa and Theoretical Biology and Biophysics, Los Alamos National Laboratory
[Entrada livre mediante inscrição prévia obrigatória AQUI ]
(https://eventos.fct.unl.pt/mathematicalbiologydayatfctnova)
[VAL] Michael Kinyon
6 October 2019 - 26 October 2019 -
Affiliation: Department of Mathematics, Denver University, USA
Venue: office 2, 3rd floor of the Mathematics Department Building
[Visiting Researcher - AL]: Peter Palfy
22 October 2019 - 1 November 2019 -
Affiliation: Alfréd Rényi Institute of Mathematics & Eötvös University, Budapest, Hungary
Venue: office 18, 3rd floor of the Mathematics Department Building
[VAn] Max Souza
18 November 2019 - 22 November 2019 -
Affiliation: Fluminense Federal University, Brazil
Venue: office 5, 3rd floor of the Mathematics Department Building
[Visiting Researcher - OR]: Roberto Andreani
25 November 2019 - 4 December 2019 -
Affiliation: Departamento de Matemática Aplicada, State University of Campinas, São Paulo, Brazil
Venue: office 18, 3rd floor of the Mathematics Department Building
[SRM] First Workshop "A Legacy of Contributions to Statistics" - In honour of João Tiago Mexia
5 December 2019 - 9:30 am - 5:00 pm
Sala de Seminários, ed. VII, FCT NOVA
[SRM] First Workshop "A Legacy of Contributions to Statistics" - In honour of João Tiago Mexia
6 December 2019 - 10:00 am - 5:40 pm
Sala de Seminários, ed. VII, FCT NOVA
[VSRM] Augustyn Markiewicz
4 December 2019 - 7 December 2019 -
Affiliation: Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, Poland
Venue: CMA room, 2nd floor of the Mathematics Department Building
[VSRM] Vladimir Ulyanov
4 December 2019 - 9 December 2019 -
Affiliation: Moscow State University, Russia
Venue: Office 18, 2nd floor of the Mathematics Department Building
[VSRM] Roman Zmyślony
6 December 2019 - 7 December 2019 -
Affiliation: University of Zielona Góra, Poland
Venue: CMA room, 2nd floor of the Mathematics Department Building
[VAL] Thomas Blyth
29 November 2019 - 9 December 2019 -
Affiliation: University of St Andrews, United Kingdom
Venue: Office 17, 3rd floor of the Mathematics Department Building
[MHealth] Workshop em Estatística para a Saúde
16 December 2019
Faculdade de Ciências e Tecnologia – Universidade Nova de Lisboa (FCT NOVA), Seminar Room – Departamento de Matemática – Building VII
[VAn] Eugene Shargorodsky
15 December 2019 - 21 December 2019 -
Affiliation: King's College London, London, United Kingdom
Venue: Office 2, 3rd floor of the Mathematics Department Building
Dates: 15/12/2019 to 21/12/2019
Winter School MathMasters
13 January 2020 - 17 January 2020 -
Departamento de Matemática da Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa (FCT NOVA)
[VAL] Jörg Koppitz
3 February 2020 - 14 February 2020 -
Affiliation: Institute of Mathematics, Potsdam University, Germany
Venue: office 2, 3rd floor of the Mathematics Department Building
[VAL] Laddawan Lohapan
3 February 2020 - 14 February 2020 -
Affiliation: Department of Mathematics, Faculty of Science, Khon Kaen University, Thailand
Venue: office 2, 3rd floor of the Mathematics Department Building
[VAL] Marianne Johnson Roberts
10 February 2020 - 14 February 2020 -
Affiliation: School of Mathematics, University of Manchester, United Kingdom
Venue: office 18, 3rd floor of the Mathematics Department Building
[VAL] Ilinka Dimitrova
10 February 2020 - 14 February 2020 -
Affiliation: Faculty of Mathematics and Natural Science, South-West University "Neofit Rilski", Bulgaria
Venue: office 2, 3rd floor of the Mathematics Department Building
[Visiting Researcher - AL] Friedrich Wehrung
13 February 2020 - 22 February 2020 -
Affiliation: Laboratoire LMNO, Université de Caen Normandie, France
Venue: office 18, 3rd floor of the Mathematics Department Building
[VAL] Mikhailo Dokuchaev
17 February 2020 - 28 February 2020 -
Affiliation: Instituto de Matemática e Estatística da Universidade de São Paulo
Venue: office 35, 3rd floor of the Mathematics Department Building
[VAL] Peter Cameron
23 February 2020 - 1 March 2020 -
Affiliation: School of Mathematics and Statistics, University of St Andrews
Venue: office 2, 3rd floor of the Mathematics Department Building
CMA & NOVA LINCS - Workshop Data Science and Big Data
4 March 2020
09:45 - Opening
António Malheiro (CMA)
Luís Caires (NOVA LINCS)
Marcos Raydan (CMA)
Pedro Barahona (NOVA LINCS)
10:00 - 10:45
Statistics and Machine Learning in Biomedical and Environmental Sciences, Marta Lopes (CMA / NOVA LINCS)
10:45 - 11:15
How to test different block diagonal structures in one or several covariance matrices, Filipe Marques (CMA)
11:15 - 11:30
SI-MORENA’s Data Driven Projects, Carlos Damásio and João Moura Pires (NOVA LINCS)
11:30 - 12:00
Classification with symbolic data, Paula Amaral (CMA)
12:00 - 12:30
Pot-pourri of Systems for Big Data and Data Science, Nuno Preguiça (NOVA LINCS)
12:30 - 14:00
Lunch
14:00 - 14:30
Semantic Similarity and Textual Entailment in the Portuguese language, Rui Rodrigues (CMA)
Title TBA, João Magalhães (NOVA LINCS)
Feature selection for marine species origin prediction, Regina Bispo (CMA)
Deep Models in Data Science: some problems and applications, Ludwig Krippahl (NOVA LINCS)
16:00 - 16:30
General discussion and closing
1st session of the NOVA Online Distinguished Lecture Series on Mathematics - Persi Diaconis
28 October 2020 - 2:00 pm - 3:30 pm
Addicional information here.
Charles R. Johnson - 2nd session of the NOVA Online Distinguished Lecture Series on Mathematics
26 February 2021 - 2:00 pm - 3:30 pm
Addicional information here.
[MBio, MHealth] Mathematical Biology - 1st Workshop - COVID-19: Monitorização e modelação em Portugal
21 April 2021 - 3:00 pm - 6:00 pm
Link: https://videoconf-colibri.zoom.us/j/87969957814
Título: Monitorização da transmissibilidade da COVID-19 em Portugal
Orador: Liliana Antunes, INSA
Título: Estimação de parâmetros epidemiológicos da COVID-19: internamentos e óbitos
Orador: João Pereira, INSA, UTAD (bolseiro do Projeto COVID-19 in-CTRL)
Título: Modelação matemática da dinâmica de transmissão de COVID-19 em Portugal
Orador: Constantino Caetano, INSA
LYMC 2021 – Lisbon Young Mathematicians Conference
24 April 2021
More information is available here.
[MBio, MHealth] Mathematical Biology - 2nd Workshop - COVID-19: Desafios na Sociedade Civil
19 May 2021 - 3:00 pm - 6:00 pm
3rd session of the NOVA Online Distinguished Lecture Series on Mathematics - Albrecht Beutelspacher
29 June 2021 - 2:00 pm - 4:00 pm
Addicional information here.
Portuguese Meeting on Optimal Control - EPCO 2021
28 June 2021 - 29 June 2021 -
[MBio, MHealth] Mathematical Biology - 3rd Workshop - COVID-19: Resultados da Investigação em Portugal
30 June 2021 - 3:00 pm - 6:00 pm
School on Mirror Symmetry and Moduli Spaces 2021
29 June 2021 - 30 June 2021 -
Ciência Viva no Laboratório – Ocupação Científica de Jovens nas Férias
19 July 2021 - 23 July 2021 -
More information available here
[VAL] Nohra Hage (Université Catholique de Lille)
17 July 2021 - 31 July 2021 -
Venue: office 2, 3rd floor of the Mathematics Department Building
[VDataScience]: Natasa Krejic (University of Novi Sad, Serbia)
4 October 2021 - 15 October 2021 -
Venue: office 2, 3rd floor of the Mathematics Department Building
[WSRM] High-Throughput Phenotyping Driven Quantitative Genetics | Gota Morota (Virginia Polytechnic Institute and State University)
20 October 2021
More information here
[WSRM] High-Throughput Phenotyping Driven Quantitative Genetics | Gota Morota (Virginia Polytechnic Institute and State University)
22 October 2021
More information here
[Visiting Researcher - SRM]: Gota Morota (Virginia Polytechnic Institute and State University, Virginia, USA)
18 October 2021 - 29 October 2021 -
Venue: office 2, 3rd floor of the Mathematics Department Building
[VAL] Mahir Can (Tulane University, New Orleans, USA)
12 December 2021 - 19 December 2021 -
Venue: office 2, 3rd floor of the Mathematics Department Building
4th edition of the Winter School Mathmasters
17 January 2022 - 19 January 2022 -
More information is available here
[VOR] Gabriele Eichfelder (Technical University of Ilmenau, Germany)
17 January 2022 - 21 January 2022 -
Venue: office 2, 3rd floor of the Mathematics Department Building
LYMC 2022 – Lisbon Young Mathematicians Conference
13 April 2022 - 14 April 2022 -
More information is available here
[VSRM] Eralda Gjika Dhamo (Department of Applied Mathematics, Faculty of Natural Science, University of Tirana)
20 June 2022 - 24 June 2022 -
Venue: office 2, 3rd floor of the Mathematics Department Building
School on Mirror Symmetry and Moduli Spaces 2022
29 June 2022 - 3 July 2022 -
More information is available here
[VAn] Yuriy Karlovych (Centro de Investigación en Ciencias, Universidad Autónoma del Estado de Morelos (Cuernavaca, Morelos, México))
27 June 2022 - 15 July 2022 -
Venue: office 18, 3rd floor of the Mathematics Department Building
[VAL] Jan Philipp Wächter (Centro de Matemática da Universidade do Porto)
27 June 2022 - 1 July 2022 -
Venue: office 2, 3rd floor of the Mathematics Department Building
[VAL] Marianne Johnson Roberts (Department of Mathematics, University of Manchester, United Kingdom)
11 July 2022 - 19 July 2022 -
Venue: office 2, 3rd floor of the Mathematics Department Building
[VAL] Mark Kambites (Department of Mathematics, University of Manchester, United Kingdom)
13 July 2022 - 19 July 2022 -
Venue: office 2, 3rd floor of the Mathematics Department Building
3rd Portuguese Meeting on Biomathematics
13 July 2022 - 14 July 2022 -
More information is available here
EUROPT2022 – 19th EUROPT Workshop on Advances in Continuous Optimization
29 July 2022 - 30 July 2022 -
More information is available here
2nd Women in Mathematics Meeting
7 September 2022 - 9 September 2022 -
More information is available here
[WMHealth]: II Workshop in Statistics for Health, Public Health and Surveillance Problems
14 September 2022
[SSRM] Bayesian Matrix Factorization and Mixed Effects Models Applied to Longitudinal Biological and Health Data | Eliana Ibrahimi (Department of Biology, University of Tirana, Albania; Biomedical Research Institute, Hasselt University, Belgium)
21 September 2022 - 1:00 pm - 2:00 pm
FCT NOVA, https://videoconf-colibri.zoom.us/j/88333359956
Abstract: This talk will discuss some applications of Bayesian matrix/tensor factorization and mixed effects models on biological and health data. Bayesian matrix factorization is applied to the expanded disability status scale (EDSS) data of multiple sclerosis patients. Mixed effects models are applied to model the effect of pharmaceutical pollution on amphibians’ tadpoles development. The models are fitted in Python for Bayesian matrix factorization and SAS for mixed models. Several models are tested under different situations to discover the best modelling alternatives while giving details on analysis strategy and software implementation. Since the datasets used were relatively small, it was possible to explore different choices for the models within reasonable computation time and study how they impact the predictive performances. The results show that these methods can handle missing data properly and arrive at accurate predictions, especially when working with sparse and noisy real-world datasets.
[VDataScience]: Eliana Ibrahimi (University of Tirana, Albania)
12 September 2022 - 4 October 2022 -
Venue: office 18, 3rd floor of the Mathematics Department Building
[VMHealth]: Samuel Manda (IBGE - Escola Nacional de Ciências Estatísticas, National School of Statistical Sciences, Brazil)
12 September 2022 - 19 September 2022 -
[VMHealth]: Pedro Silva (IBGE - Escola Nacional de Ciências Estatísticas, National School of Statistical Sciences, Brazil)
12 September 2022 - 16 September 2022 -
Venue: office 2, 3rd floor of the Mathematics Department Building
[SOR] An interior point method for nonlinear constrained derivative-free optimization | Andrea Brilli (Sapienza University of Rome)
12 October 2022 - 1:00 pm - 2:00 pm
room 2.3 (2nd floor) Building VII.
Abstract: "In this paper we consider constrained optimization problems where both the objective and constraint functions are of the black-box type. Furthermore, we assume that the nonlinear inequality constraints are non-relaxable, i.e. their values and that of the objective function cannot be computed outside of the feasible region. This situation happens frequently in practice especially in the black-box setting where function values are typically computed by means of complex simulation programs which may fail to execute if the considered point is outside of the feasible region. For such problems, we propose a new derivative-free optimization method which is based on the use of a merit function that handles inequality constraints by means of a log-barrier approach and equality constraints by means of a quadratic penalty approach. We prove convergence of the proposed method to KKT stationary points of the problem under quite mild assumptions. Furthermore, we also carry out a preliminary numerical experience on standard test problems and comparison with state-of-the-art solvers which shows efficiency of the proposed method."
[SOR] An interior point method for nonlinear constrained derivative-free optimization | Andrea Brilli (Sapienza University of Rome)
12 October 2022 - 1:00 pm - 2:00 pm
room 2.3 (2nd floor) Building VII.
Abstract: "In this paper we consider constrained optimization problems where both the objective and constraint functions are of the black-box type. Furthermore, we assume that the nonlinear inequality constraints are non-relaxable, i.e. their values and that of the objective function cannot be computed outside of the feasible region. This situation happens frequently in practice especially in the black-box setting where function values are typically computed by means of complex simulation programs which may fail to execute if the considered point is outside of the feasible region. For such problems, we propose a new derivative-free optimization method which is based on the use of a merit function that handles inequality constraints by means of a log-barrier approach and equality constraints by means of a quadratic penalty approach. We prove convergence of the proposed method to KKT stationary points of the problem under quite mild assumptions. Furthermore, we also carry out a preliminary numerical experience on standard test problems and comparison with state-of-the-art solvers which shows efficiency of the proposed method."
[SAn] On the well-posedness of a Hamilton-Jacobi-Bellman equation with transport noise | Neeraj Bhauryal (GFM, University of Lisbon)
19 October 2022 - 2:15 pm - 3:15 pm
Room 1.6 VII
[Mini-courseOR] Derivative Free Algorithms | Warren Hare, University of British Columbia, Canada
31 October 2022 - 4:00 pm - 5:30 pm
Room 1.19, Building VII, FCT NOVA
Abstract: From minimizing construction costs to maximizing image quality, optimization arises naturally in virtually every field of modern research. In many of these applications, the objective function is provided by a blackbox or simulation. Derivative-free algorithms (DFA) provide powerful tools to solve such problems. In this workshop, we introduce the basics of DFA, including several examples of their usage. We expand further by including recent research results and
future directions of DFA.
Day 31 will cover:
- What is BBO and DFA?
- Basics of Direct-search methods
- Recent advancements in p-bases
Speaker Bio: Dr. Warren Hare is a Full Professor of Mathematics at the University of British Columbia, Canada. He serves as an Associate Editor with Set Valued and Variational Analysis and the Pacific Journal of Optimization. He is co-author of the book Derivative-Free and Blackbox Optimization and co-winner of the EURO excellence in practice prize.
[Mini-courseOR] Derivative Free Algorithms | Warren Hare, University of British Columbia, Canada
4 November 2022 - 4:00 pm - 5:30 pm
Room 1.10, Building VII, FCT NOVA
Abstract: From minimizing construction costs to maximizing image quality, optimization arises naturally in virtually every field of modern research. In many of these applications, the objective function is provided by a blackbox or simulation. Derivative-free algorithms (DFA) provide powerful tools to solve such problems. In this workshop, we introduce the basics of DFA, including several examples of their usage. We expand further by including recent research results and
future directions of DFA.
Day 4 will cover:
- Basics of Model-based methods
- Constructing models
- Future of DFA
Speaker Bio: Dr. Warren Hare is a Full Professor of Mathematics at the University of British Columbia, Canada. He serves as an Associate Editor with Set Valued and Variational Analysis and the Pacific Journal of Optimization. He is co-author of the book Derivative-Free and Blackbox Optimization and co-winner of the EURO excellence in practice prize.
[VOR] Warren Hare (University of British Columbia, Canada)
31 October 2022 - 4 November 2022 -
Venue: office 2, 3rd floor of the Mathematics Department Building
[SAL] The mathematics of solitaire (and an introduction to patience sorting) | Persi Diaconis (Stanford University, USA)
7 November 2022 - 2:00 pm - 3:00 pm
Seminar room, building VII, FCT NOVA
Abstract:
Millions of people play solitaire (patience) every day. One of the (many) embarrassments of the applied probability community is: WE CAN'T FIGURE OUT SOLITAIRE!. What's a good strategy? If one plays well, what's the chance of winning? How does this depend on the rules? In Vegas, you can 'buy a deck' for $52 and get $5 for each card played forward (rules; go through once, one at a time, no splitting piles (a la Microsoft)). How close to fair is this? I will report some machine learning results (with Ben VanRoy and Robbie Yan). The main point of the talk is to introduce a simple solitaire that we can solve. One point is the connection with the deepest mathematics. Symmetric functions, tableaux combinatorics, Baik-Deift-Johansson theorem. A second point is that this variant, patience sorting, has recently emerged in semigroup theory!--work of Cain,Malheiro,Silva and others. In this introductory talk, I hope to start a conversation between these two communities.
[SAL] The semigroup of endomorphisms with restricted range of an independence algebras | Ambroise Grau (University of York)
14 November 2022 - 2:00 pm - 3:00 pm
Zoom link: https://videoconf-colibri.zoom.us/j/95986880586?pwd=a2lHSWYwQnM2VGswRGdUWXFRUk5oUT09
Abstract:
It is well known that the set of transformations on a set X
and the set of endomorphisms of a vector space V have many properties in
common, so that these monoids are now seen under the framework of
endomorphism monoids of independence algebras (matroids with an
additional free basis property whose classification helped Givant to
work on categorising varieties and quasi-varieties categorical/free in
power).
Symons started to look at automorphisms of the set of all transformation
on a set X that have image a fixed subset of X, say Y, and this study
got extended to Green's relations and ideals by multiple authors, who
also carried a similar study on vector spaces. As the results were
(maybe unsurprisingly) similar, it prompted a generalisation of their
study under the framework of independence algebras. The semigroup T(A,B)
which consists of all endomorphisms of an independence algebra A whose
image lie inside a subalgebra B is a non-regular subsemigroup of End(A),
the endomorphism monoid of A. This means in particular that the usual
Green's relations are not directly inherited from that of End(A) and its
ideals and extended Green's relations are more interesting. In
particular the latter somewhat depend on the codimension of the
subalgebra B. In this talk, I will describe some structural properties
of this semigroup.
[SAn] Time discretization method to solve a monotone parabolic stochastic PDE | Yassine Tahraoui (CMA, Univ. NOVA of Lisbon)
16 November 2022 - 2:15 pm - 3:15 pm
Room 1.6 VII
[SAL] The Dehn function of some one-relation monoids | Carl-Fredrik Nyberg-Brodda (Université Gustave Eiffel)
21 November 2022 - 2:00 pm - 3:00 pm
Zoom link: https://videoconf-colibri.zoom.us/j/95986880586?pwd=a2lHSWYwQnM2VGswRGdUWXFRUk5oUT09
Abstract:
The Dehn function for a semigroup or group M is an asymptotic measure of how bad the "naive solution" to the word problem in M may be. The word problem in M is decidable if and only if the Dehn function of M is a recursive function, but frequently the Dehn function is significantly more poorly behaved than the complexity of the word problem. On the other hand, the word problem for one-relation monoids is one of the most intriguing and important open problems in semigroup theory. For that reason, it makes sense to ask: how bad can the Dehn function of a one-relation monoid be? I will present the history of the problem, as well as some of my own recent progress on this topic for the class of one-relation monoids where the relation is of the form bUa = a, for a word U, answering in particular a question posed by Cain & Maltcev in 2013.
[Outreach] Science and Technology Week 2022
21 November 2022 - 2:30 pm - 3:30 pm
Library lecture hall, FCT NOVA
More information available here
[SAn] On the interpolation constants for variable Lebesgue spaces | Oleksiy Karlovych (NOVA Math, Lisbon)
30 November 2022 - 2:15 pm - 3:15 pm
[SOR] Optimization with Social Impact | Helena Ramalhinho Lourenço (Economics and Business Department at the University Pompeu Fabra, Barcelona, Spain)
5 December 2022 - 4:30 pm - 5:30 pm
(room 1.19 building VII)
Abstract: Analytics focuses on transforming data into insights by applying advanced analytical methods, based on mathematics, statistics, operations research and artificial intelligent models and algorithms, with the objective to improve the performance of an organization. One of the main tools in Analytics is Optimization. In this talk, we present the optimization tools and methodologies applied to NonProfit Organizations (NPO). We will describe applications of Mathematical Programming Models and Metaheuristics Algorithms to Social Care, Healthcare, Humanitarian Logistics and Environmental organizations. Examples of applications of Optimization in these organizations are: home health care logistics and scheduling; location of the primary health care centers or schools; planning the humanitarian aid distribution; planning a sustainable transportation, etc. We will also discuss the main aspects of these models and algorithms, and the main differences to other more frequent applications, as in manufacturing and retailing industries.
Bio: Helena Ramalhinho Lourenço is a Full Professor at the Economics and Business Department at the University Pompeu Fabra, Barcelona, Spain. She has a B.A. and Master degree in Statistics and Operations Research from the University of Lisbon, Portugal, and a Ph.D. in Operations Research from Cornell University, New York, USA. She has been involved in different research projects and consulting for business firms in the area of Operations Research and Logistics. Helena has published many articles in prestigious international scientific journals and has presented her work at international congresses and conferences. Helena teaches at various undergraduate, master’s and PhD’s programs at UPF and other universities. She is currently the director of the Business Analytics Research Group. Her research interests include Operations Research, Scheduling, Combinatorial Optimization, Metaheuristics, Iterated Local Search, Heuristic Search Optimization, Vehicle Routing, and applications on Supply Chain Management, Logistics, Operations Management and Health Care.
http://lena.upf.edu/
[SOR] Optimization with Social Impact | Helena Ramalhinho Lourenço (Economics and Business Department at the University Pompeu Fabra, Barcelona, Spain)
5 December 2022 - 4:30 pm - 5:30 pm
(room 1.19 building VII)
Abstract: Analytics focuses on transforming data into insights by applying advanced analytical methods, based on mathematics, statistics, operations research and artificial intelligent models and algorithms, with the objective to improve the performance of an organization. One of the main tools in Analytics is Optimization. In this talk, we present the optimization tools and methodologies applied to NonProfit Organizations (NPO). We will describe applications of Mathematical Programming Models and Metaheuristics Algorithms to Social Care, Healthcare, Humanitarian Logistics and Environmental organizations. Examples of applications of Optimization in these organizations are: home health care logistics and scheduling; location of the primary health care centers or schools; planning the humanitarian aid distribution; planning a sustainable transportation, etc. We will also discuss the main aspects of these models and algorithms, and the main differences to other more frequent applications, as in manufacturing and retailing industries.
Bio: Helena Ramalhinho Lourenço is a Full Professor at the Economics and Business Department at the University Pompeu Fabra, Barcelona, Spain. She has a B.A. and Master degree in Statistics and Operations Research from the University of Lisbon, Portugal, and a Ph.D. in Operations Research from Cornell University, New York, USA. She has been involved in different research projects and consulting for business firms in the area of Operations Research and Logistics. Helena has published many articles in prestigious international scientific journals and has presented her work at international congresses and conferences. Helena teaches at various undergraduate, master’s and PhD’s programs at UPF and other universities. She is currently the director of the Business Analytics Research Group. Her research interests include Operations Research, Scheduling, Combinatorial Optimization, Metaheuristics, Iterated Local Search, Heuristic Search Optimization, Vehicle Routing, and applications on Supply Chain Management, Logistics, Operations Management and Health Care.
http://lena.upf.edu/
[SSRM] Seminar of Statistics and Risk Management | EVT-Informed Statistical Inference | Miguel de Carvalho (University of Edinburgh)
7 December 2022 - 2:00 pm - 3:00 pm
Title: EVT-Informed Statistical Inference
Speaker: Miguel de Carvalho, University of Edinburgh
Date | Time: December 7, 2022 | 14h00
Place: FCT NOVA, IX-2.25
Zoom: https://videoconf-colibri.zoom.us/j/88333359956 (For remote participants)
Abstract: The widely felt impact of record-breaking extreme events—such as stock market crashes, earthquakes, heatwaves, or widespread flooding—calls for an urgent need for a better understanding and quantification of their risk. In this talk, I will offer an overview on recent developments on the field of Extreme Value Theory (EVT) with a bias towards some of my own contributions.
Short Bio: Miguel de Carvalho is Reader in Statistics at the School of Mathematics, University of Edinburgh and the former Director of the Centre for Statistics of the same University. His research interests include, inter alia, Applied Statistics, Biostatistics, Econometrics, Risk Analysis, and Statistics of Extremes. He has been an AE for a variety of top tier journals in the field of Statistics, including the Journal of the American Statistical Association, the Annals of Applied Statistics as well as the American Statistician. He is currently the President of the Portuguese Statistical Society.
[SOR] Shor convexity, min-max QCQPs and application to min-max regret of nonconvex QPs | Immanuel M. Bomze (Univ.Vienna), jointly with Paula Amaral (Univ.Nova Lisboa, work in progress)
9 December 2022 - 2:00 pm - 3:00 pm
sala de seminários do VII and online link https://videoconf-colibri.zoom.us/j/8088003611
Será realizado em modelo híbrido presencial e online. O link para assistir online é o seguinte
https://videoconf-colibri.zoom.us/j/8088003611
Shor convexity, min-max QCQPs and application to min-max regret of
nonconvex QPs
Immanuel M. Bomze (Univ.Vienna), jointly with Paula Amaral (Univ.Nova
Lisboa, work in progress)
Under (finitely many) uncertain scenarios, min-max regret for (possibly
nonconvex) Standard QPs can be reduced to a min-max (fractional) QCQP.
En route to narrowing the gap between powerful conic lower bounds and
efficient upper bounds, i.e. good feasible values, we will study
the apparently novel notion of *Shor convexity* (not to be confused with
the well-known notion of Schur convexity) suggested by lifting
techniques, and discuss possibilities to use bundle methods for
tightening upper bounds. A generalization of the famous Jensen's
inequality will be proved as well.
[SSRM] Nobel Prize of Economics, Statistics or Data Science? | Miguel de Carvalho (University of Edinburgh)
9 December 2022 - 4:00 pm - 5:00 pm
Auditório da Biblioteca
Palestra Motivacional
[VSRM] Miguel de Carvalho (University of Edinburgh, Edinburgh, United Kingdom)
2 December 2022 - 13 December 2022 -
Venue: office 2, 3rd floor of the Mathematics Department Building
[SAn] Dirac geometry and conservative Lotka-Volterra equations| Hassan Najafi Alishah (Faculdade de ciência da universidade de Lisboa)
14 December 2022 - 2:15 pm - 3:15 pm
Room 1.6 VII
[MBio] Seminar of Biomathematics | Modeling and analysis of complex epidemic events using hybrid dynamical systems |Guillaume Cantin (Nantes Université)
9 January 2023 - 4:00 pm - 5:00 pm
Guillaume Cantin
Département Informatique, UMR_6004 Laboratoire des Sciences du Numérique de Nantes, Nantes Université
Title:
Modeling and analysis of complex epidemic events using hybrid dynamical systems
Abstract:
In this talk, I will present recent works realized in collaboration
with Cristiana J. Silva on the modeling and analysis of complex epidemic events.
In the first part, I will show how to model the spatial spreading of an epidemic in a heterogeneous geographical environment using complex networks of dynamical systems.
The influence of the topology of the underlying network
on the dynamics of the epidemic will be illustrated with a theoretical approach for small networks,
and with a computational approach for large networks.
In the second part, I will present a novel approach for studying the impacts of human behaviors
on the spreading of an epidemic, using hybrid dynamical systems coupling a macroscopic approach relying on differential equations
with a microscopic individual-based approach.
Theoretical results on the well-posedness of such hybrid models and on the existence of particular
solutions exhibiting irregular oscillations will be exposed.
[SAn] Existence results for nonlinear differential problems | Pasquale Candito ( Mediterranean University of Reggio Calabria, Italy)
18 January 2023 - 2:15 pm - 3:15 pm
Room 1.6 VII
[SAL] Higher Grassmann Codes | Mahir Can (Tulane University, New Orleans)
23 January 2023 - 2:00 pm - 3:00 pm
Zoom link: https://videoconf-colibri.zoom.us/j/95986880586?pwd=a2lHSWYwQnM2VGswRGdUWXFRUk5oUT09
Abstract:
The Grassmann variety of k-dimensional subspaces of an n-dimensional vector space over a finite field with q-elements can be thought of as the ``moduli space'' of all linear q-ary (n,k)-codes. At the same time, each Grassmann variety naturally provides an algebraic geometry code via its Plucker embedding. The structure of Grassmann codes has been parsed by many researchers, most notably by Sudhir Ghorpade. In this talk, we will discuss a fruitful generalization of the Grassmann codes by using the embeddings of Grassmannians into higher-dimensional projective spaces. This new family of ``higher Grassmann codes'' has interesting connections with the modular representation theory of SL_n.
[SAn] How good is averaging? | Guillermo Curbera ( Universidad de Sevilla, Spain)
25 January 2023 - 2:15 pm - 3:15 pm
Room 1.6 VII
We discuss the process of averaging via Cesàro means, both for sequences and for functions. We start reviewing Hardy's results in the 1920s and arrive at some recent results in Functional Analysis and Operator Theory.
[SAn] When are the norms of the Riesz projection and the backward shift operator equal to one?| Eugene Shargorodsky ( King's College London, UK)
26 January 2023 - 2:15 pm - 3:15 pm
Room 1.6 VII
The talk is based on a joint work with Oleksiy Karlovych.
The lower estimate by Gohberg and Krupnik (1968) and the upper estimate
by Hollenbeck and Verbitsky (2000) for the norm of the Riesz projection
$P$ on the Lebesgue space $L^p$ lead to $\|P\|_{L^p\to L^p}=1/\sin(\pi/p)$
for every $p\in(1,\infty)$. Hence $L^2$ is the only space among all Lebesgue
spaces $L^p$ for which the norm of the Riesz projection $P$ is equal to one.
Banach function spaces $X$ are far reaching generalizations of Lebesgue spaces
$L^p$. We prove that the norm of $P$ is equal to one on the space $X$ if and
only if $X$ coincides with $L^2$ and there exists a constant $C\in(0,\infty)$
such that $\|f\|_X=C\|f\|_{L^2}$ for all functions $f\in X$. Independently
from this, we also show that the norm of $P$ on $X$ is equal to one if and
only if the norm of the backward shift operator $S$ on the abstract Hardy
space $H[X]$ built upon $X$ is equal to one.
[VAn] Eugene Shargorodsky (King's College London, United Kingdom)
22 January 2023 - 27 January 2023 -
Venue: office 2, 3rd floor of the Mathematics Department Building
[VAn] Guillermo Curbera (University of Sevilha, Spain)
22 January 2023 - 27 January 2023 -
Venue: office 2, 3rd floor of the Mathematics Department Building
[SOR] Robot dance: Using optimization for intervention against Covid-19 in a complex network | Paulo José da Silva e Silva (University of Campinas, Brazil)
7 February 2023 - 2:00 pm - 3:00 pm
building VII (seminar room)
Abstract
Robot Dance is a computational platform developed in response to the coronavirus
outbreak, to support the decision-making on public policies at a regional
level. The tool is suitable for understanding and suggesting levels of
intervention needed to contain the spread of diseases when the mobility of
inhabitants through a regional network is a concern. Such is the case for Covid-19
that is highly contagious and, therefore, the circulation of people must be
considered in the epidemiological compartmental models. Robot Dance anticipates
the spread of epidemics in a complex regional network, identifying fragile links
where applying differentiated measures of containment, testing, and vaccination
are the most effective. Based on stochastic optimization, the model determines
optimal strategies on the basis of the commuting of individuals and the situation
of hospitals in each district. Uncertainty in the capacity of intensive care beds
is handled by a chance-constraint approach. Some functionalities of Robot Dance
are illustrated on the state of São Paulo in Brazil, using real data for a region
with more than forty million inhabitants. We will also show extensions of the model
that allow to design vaccination campaigns that take into account multiple
sub-populations that present different responses to the virus.
[SOR] Mini-course: Using Julia for solving optimization problems | Paulo José da Silva e Silva (University of Campinas, Brazil)
13 February 2023 - 2:00 pm - 4:00 pm
building VII (seminar room)
[SOR] Mini-course: Using Julia for solving optimization problems | Paulo José da Silva e Silva (University of Campinas, Brazil)
15 February 2023 - 2:00 pm - 4:00 pm
building VII (seminar room)
[SOR]Business dynamics models: one step ahead optimal control via optimization | Professor Amit Bhaya (Federal University of Rio de Janeiro)
20 February 2023 - 2:00 pm - 3:00 pm
building VII (seminar room)
Title: Business dynamics models: one step ahead optimal control via optimization
Abstract: Bsiness dynamics refers to a combination of business management and financial objectives embedded in a dynamical system model subject to a control that optimizes an index that takes both management and financial aspects into account. . The objective is to optimize an index that takes into account both managerial and financial aspects, so that the control is applicable in real time. The main technique proposed is one-step-ahead optimal control, which will be formulated as a mathematical programming problem. Examples of debt amortization, cash balance, control of supply chains, dynamic advertising games, among others, will be presented.
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Read MoreFor Outreach Events see our webpage Outreach & Educational Programmes.