Search Results for author: Giuseppe Brandi

Found 6 papers, 0 papers with code

Multiscaling and rough volatility: an empirical investigation

no code implementations25 Jan 2022 Giuseppe Brandi, T. Di Matteo

We find that the model is able to reproduce multiscaling features of the prices' time series when a low value of the Hurst exponent is used but it fails to reproduce what the real data say.

Time Series Time Series Analysis

The use of scaling properties to detect relevant changes in financial time series: a new visual warning tool

no code implementations18 Oct 2020 Ioannis P. Antoniades, Giuseppe Brandi, L. G. Magafas, T. Di Matteo

These GHE patterns, distinguish in a statistically robust way, not only between time periods of uniscaling and multiscaling, but also among different types of multiscaling: symmetric multiscaling (M) and asymmetric multiscaling (A).

Time Series Time Series Analysis

A new multilayer network construction via Tensor learning

no code implementations11 Apr 2020 Giuseppe Brandi, T. Di Matteo

Multilayer networks proved to be suitable in extracting and providing dependency information of different complex systems.

Predicting Multidimensional Data via Tensor Learning

no code implementations11 Feb 2020 Giuseppe Brandi, T. Di Matteo

In particular, in this paper, we propose a parsimonious tensor regression model that retains the intrinsic multidimensional structure of the dataset.

Time Series Analysis

On the statistics of scaling exponents and the Multiscaling Value at Risk

no code implementations11 Feb 2020 Giuseppe Brandi, T. Di Matteo

We show that by using this statistical procedure in combination with the robustly estimated multiscaling exponents, the one year forecasted MSVaR mimics the VaR on the annual data for the majority of the stocks analyzed.

Time Series Time Series Analysis

Unveil stock correlation via a new tensor-based decomposition method

no code implementations14 Nov 2019 Giuseppe Brandi, Ruggero Gramatica, Tiziana Di Matteo

To retrieve the factor components, we propose a new tensor decomposition (which we name Slice-Diagonal Tensor (SDT) factorization) and compare it to the two most used tensor decompositions, the Tucker and the PARAFAC.

Management Tensor Decomposition

Cannot find the paper you are looking for? You can Submit a new open access paper.