7 papers
From rough to multifractal multidimensional volatility: A multidimensional Log S-fBM model
Othmane Zarhali, Emmanuel Bacry, Jean-François Muzy
We introduce the multivariate Log S-fBM model (mLog S-fBM), extending the univariate framework proposed by Wu \textit{et al.} to the multidimensional setting. We define the multidi…
A Nested Factor Model for Equity Markets: Reconciling Multifractal Stock Returns and Rough Index Volatilities
Othmane Zarhali, Cecilia Aubrun, Emmanuel Bacry +2
The Nested factor model was introduced by Chicheportiche et al. to represent non-linear correlations between stocks. Stock returns are explained by a standard factor model, but the…
Forecasting threshold exceedance of atmospheric variables at a specific location
Roberta Baggio, Jean-François Muzy
This study compares two methodological approaches for predicting, at a given site, threshold exceedances of atmospheric variables such as temperature and wind speed: (i) direct pro…
KANFormer for Predicting Fill Probabilities via Survival Analysis in Limit Order Books
Jinfeng Zhong, Emmanuel Bacry, Agathe Guilloux +1
This paper introduces KANFormer, a novel deep-learning-based model for predicting the time-to-fill of limit orders by leveraging both market- and agent-level information. KANFormer…
Local wind speed forecasting at short time horizons based on Numerical Weather Prediction and observations from surrounding stations
Roberta Baggio, Killian Pujol, Florian Pantillon +3
This study presents a hybrid neural network model for short-term (1-6 hours ahead) surface wind speed forecasting, combining Numerical Weather Prediction (NWP) with observational d…
No Tick-Size Too Small: A General Method for Modelling Small Tick Limit Order Books
Konark Jain, Jean-François Muzy, Jonathan Kochems +1
Tick-sizes not only influence the granularity of the price formation process but also affect market agents' behavior. We investigate the disparity in the microstructural properties…