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Research project: STEADY

The last decade has been characterised by a data revolution. In economics and elsewhere (physics, machine learning, biology, imaging, statistics) ever more data structures emerge that require new models suited for analysing multidimensional arrays of data, so called tensors (e.g., data of firm exposures (dimension 1) to other firms (dim.2) over time (dim.3) in different markets (dim.4)). Adequate econometric models for such data are currently largely lacking. They either simplify the problem to the 2-dimensional setting, or use models that are too static to account for rapid changes in economic conditions.

STEADY fills this gap by developing new tensor models that account for the typical non-linear and dynamic features of economic data. STEADY concentrates on two main contributions: developing a general class of dynamic time-series models (tensor score-driven time-varying parameter models), and developing new tensor-based compression techniques for many economic time series (tensor dynamic factor models). The models developed will also be applicable in related fields. Both

contributions of STEADY are applied to policy relevant questions for central banks and financial regulators, including forecasting multi-country, multi-market interest rate term structures for the evaluation of monetary policy effectiveness, and nowcasting multi-country economic activity in the heterogeneous European context. This is done by a close cooperation between the principal researcher, experts at VUA (host), and the European Central Bank (ECB). A secondment to ECB is

key to the project, such that methodology, application, and implementation can be developed as a joint, cross-disciplinary effort between university and policymakers.

Project details

Project details

Call: H2020-MSCA-IF-2019
Proposal number: 887220
Proposal acronym: STEADY
Period: 1.10.2020-31-8-2022
Name Researcher: dr. Matteo Iacopini
Title Research: Score-driven Tensor Autoregressive Dynamical models

This project is funded by the European Commission

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Project Results

Publications:

Journal papers:

  • Billio, M., Casarin, R., Iacopini, M., & Kaufmann, S. (2023). Bayesian Dynamic Tensor Regression. Journal of Business & Economic Statistics, 41(2), 429-439 . https://doi.org/10.1080/07350015.2022.2032721
  • Iacopini, M., & Santagiustina, C. R. M. A. (2021). Filtering the intensity of public concern from social media count data with jumps. Journal of the Royal Statistical Society. Series A: Statistics in Society, 184(4), 1283-1302. https://doi.org/10.1111/rssa.12704
  • Billio, M., Casarin, R., & Iacopini, M. (Accepted/In press). Bayesian Markov-Switching Tensor Regression for Time-Varying Networks. Journal of the American Statistical Association. https://doi.org/10.1080/01621459.2022.2102502
  • Costola, M., Iacopini, M., & Santagiustina, C. R. M. A. (2021). On the “mementum” of meme stocks. Economics Letters, 207, 1-6. [110021]. https://doi.org/10.1016/j.econlet.2021.110021
  • Billio, M., Casarin, R., Costola, M., & Iacopini, M. (Accepted/In press). COVID-19 spreading in financial networks: A semiparametric matrix regression model. Econometrics and Statistics. https://doi.org/10.1016/j.ecosta.2021.10.003
  • Iacopini, M., Ravazzolo, F., & Rossini, L. (2023). Proper Scoring Rules for Evaluating Density Forecasts with Asymmetric Loss Functions. Journal of Business & Economic Statistics, 41(2), 482-496. https://doi.org/10.1080/07350015.2022.2035229

Working Papers:

  • Bianchi, D., Iacopini, M. and Rossini, L., "Stablecoins and Cryptocurrency Returns: Evidence from large Bayesian VARs" -- (working paper)

Conference Papers:

Invited presentations:

  • Invited Speaker at “Bayesian Nonparametrics Networking workshop”, Nicosia, Cyprus (25-29 April 2022) 
  • Seminar at Department of Economics, Ca’ Foscari University of Venice, Italy (2 February 2022)

Contributed presentations:

  • IAAE 2022 - Annual Conference of the International Association of Applied Econometrics. London, United Kingdom (21-24 June 2022)
  • 5th Workshop on High-Dimensional Time Series in Macroeconomics and Finance. Wien, Austria (9-10 June 2022)
  • 3rd IWEEE - International Workshop on Econometrics and Empirical Economics. Rimini, Italy (20-21 January 2022)
  • CFENetwork - International Conference on Computational and Financial Econometrics. London, United Kingdom (18-20 December 2021)
  • 4th Annual Workshop on Financial Econometrics. Örebro, Sweden (15-16 November 2021)
  • 11th ESOBE - European Seminar on Bayesian Econometrics Annual Workshop. Madrid, Spain (2-3 September 2021)
  • IAAE 2021 - Annual Conference of the International Association of Applied Econometrics. Rotterdam, The Netherlands (22-25 June 2021)
  • BISP-12 - 12th Workshop on Bayesian Inference in Stochastic Processes. Milan, Italy (27-28 May 2021)
  • Dynamic Econometrics Conference. Virtual (18-19 March 2021)

Poster presentation:

31st EC2 Conference on High dimensional modeling in time series. Paris, France (11-12 December 2020)

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