Research

Research Interests

●   Panel Data Models;

●   Functional Data Analysis, Big Data Analysis;

●   Nonlinear Models, Time Series Econometrics, Long­-run Relations;

●   Environmental Economics

 Publications

6     (Structural) VAR Models with Ignored Changes in Mean and Covariance

       International Journal of Forecasting 2024, Volume 40(2), 840-854

       (joint work with Matei Demetrescu)

       | Working paper | Published paper |

5     Testing for No Cointegration in Vector Autoregressions with Estimated Degree of Fractional Integration

        Economic Modelling 2022, Volume 108 

        (joint work with Matei Demetrescu and Vladimir Kuzin)

        | Working paper - PDF | Published paper |

4     Estimation of Heterogeneous Panels with Systematic Slope Variations

         Journal of Econometrics 2021, Volume 220(2), 399-415

         (joint work with Joerg Breitung)

         | Published paper |

3     A Moment-based Notion of Time Dependence for Functional Time Series Analysis

        Journal of Econometrics 2019, Volume 212(2), 377-392

       (joint work with Alexander Gleim)

        | Old working paper | Published paper |

2.    Lagrange M­ultiplier Type Tests for Slope Homogeneity in Panel Data Models

        Econometrics Journal 2016, Volume 19(2), 166-202

        (joint work with Joerg Breitung and Christoph Roling)

        | Published paper | Matlab code

1.    Modelling and Forecasting Interval Time Series with Threshold Models.

        Advances in Data Analysis and Classification 2015, Volume 9(1), 41-57

        (joint work with Paulo Rodrigues)      

        | Working paper  | Published paper |

Chapters in Book

1.    Panel Seasonal Unit Root Tests: An Application to Tourism.

       Tourism Economics: Impact Analysis, Springer ­Verlag Berlin Heidelberg, 183­210    

       (joint work with Paulo Rodrigues)       

       | Published chapter |

Working Papers

●     Approximate Factor Models for Functional Time Series

        (joint work with Sven Otto)

        | Working paper | R-Code

●     Forecasting Environmental Data: An Example of Ground-Level Ozone Concentration Surfaces
  (joint with Alexander Gleim)

        | Working paper |

●     Saving for sunny days: The impact of climate (change) on consumer prices in the euro area

       (joint work with Paulo Rodrigues and Mirjam Salish)

       | Working paper |

●     On Testing Shock Induced Asymmetries in Time Series

       (joint work with Thomas Nebeling)

       | Working paper |

Work in Progress

●     Dynamic Functional Regression with Long-Range Dependence

       (joint work with Jean-Pierre Florens)

●     Analysis of Asymmetric Multivariate Time Series Models

●     Forecasting Functional Times Series with Nonlinear Features: An Application to Electricity Demand

       (joint with Alexander Gleim)

●     A General Asymptotic Theory for Principal Components

       (joint with Juan Carlos Escanciano)

●     On Nontrivial Power of Panel Slope Homogeneity Tests in the Presence of Grouped Patterns 

       (joint with Antonio Raiola)

●     Asymptotic Inference about Predictive Accuracy in Functional Time Series  

       (joint with Matei Demetrescu)