Zobrazeno 1 - 10
of 12 874
pro vyhledávání: '"Biagini, A"'
Autor:
Biagini, Alfredo, Petralia, Antonino, Di Maio, Claudia, Betti, Lorenzo, Pace, Emanuele, Micela, Giuseppina
Publikováno v:
A&A 690, A386 (2024)
Context. Stellar activity consists of different phenomena, mainly spots and faculae, and it is one of the main sources of noise in exoplanetary observations because it affects both spectroscopic and photometric observations. If we want to study young
Externí odkaz:
http://arxiv.org/abs/2409.11034
Randomised signature has been proposed as a flexible and easily implementable alternative to the well-established path signature. In this article, we employ randomised signature to introduce a generative model for financial time series data in the sp
Externí odkaz:
http://arxiv.org/abs/2406.10214
Autor:
Biagini, Alfredo, Cracchiolo, Gianluca, Petralia, Antonino, Maldonado, Jesús, Di Maio, Claudia, Micela, Giuseppina
The super-Earth LHS 1140 b is an interesting target for atmospheric observations since it is close to the habitable zone of its star and falls in the gap of the radius distribution of small exoplanets, in the region thought to correspond to the trans
Externí odkaz:
http://arxiv.org/abs/2403.20285
In this paper we introduce a definition of a multi-dimensional fractional Brownian motion of Hurst index $H \in (0, 1)$ under volatility uncertainty (in short G-fBm). We study the properties of such a process and provide first results about stochasti
Externí odkaz:
http://arxiv.org/abs/2312.12139
We derive quantitative error bounds for deep neural networks (DNNs) approximating option prices on a $d$-dimensional risky asset as functions of the underlying model parameters, payoff parameters and initial conditions. We cover a general class of st
Externí odkaz:
http://arxiv.org/abs/2309.14784
Autor:
Damasso, M., Scandariato, G., Nascimbeni, V., Nardiello, D., Mancini, L., Marino, G., Bruno, G., Brandeker, A., Leto, G., Marzari, F., Lanza, A. F., Benatti, S., Desidera, S., Béjar, V. J. S., Biagini, A., Borsato, L., Cabona, L., Claudi, R., Lodieu, N., Maggio, A., Díaz, M. Mallorquín, Messina, S., Micela, G., Ricci, D., Sozzetti, A., Mascareño, A. Suárez, Turrini, D., Osorio, M. R. Zapatero
V1298 Tau hosts at least four planets. Since its discovery, this system has been a target of intensive photometric and spectroscopic monitoring. The characterisation of its architecture and planets' fundamental properties turned out to be very challe
Externí odkaz:
http://arxiv.org/abs/2309.14131
Autor:
Biagini, Francesca, Doldi, Alessandro, Fouque, Jean-Pierre, Frittelli, Marco, Meyer-Brandis, Thilo
We introduce the notions of Collective Arbitrage and of Collective Super-replication in a discrete-time setting where agents are investing in their markets and are allowed to cooperate through exchanges. We accordingly establish versions of the funda
Externí odkaz:
http://arxiv.org/abs/2306.11599
Autor:
Patrizia Robino, Livio Galosi, Alessandro Bellato, Silvia Vincenzetti, Elena Gonella, Ilario Ferrocino, Evelina Serri, Lucia Biagini, Alessandra Roncarati, Patrizia Nebbia, Chiara Menzio, Giacomo Rossi
Publikováno v:
Biological Research, Vol 57, Iss 1, Pp 1-13 (2024)
Abstract Background In this study, a probiotic mixture (Honeybeeotic) consisting of seven bacterial strains isolated from a unique population of honeybees (Apis mellifera ligustica) was used. That honeybee population was located in the Roti Abbey loc
Externí odkaz:
https://doaj.org/article/d9a0ef6f5e864a43a39965506a9e1ef4
Correcting Exoplanet Transmission Spectra for Stellar Activity with an Optimised Retrieval Framework
Autor:
Thompson, Alexandra, Biagini, Alfredo, Cracchiolo, Gianluca, Petralia, Antonino, Changeat, Quentin, Saba, Arianna, Morello, Giuseppe, Morvan, Mario, Micela, Giuseppina, Tinetti, Giovanna
The chromatic contamination that arises from photospheric heterogeneities e.g. spots and faculae on the host star presents a significant noise source for exoplanet transmission spectra. If this contamination is not corrected for, it can introduce sub
Externí odkaz:
http://arxiv.org/abs/2302.04574
Total factor productivity (TFP) is a key determinant of farm development, a sector that receives substantial public support. The issue has taken on great importance today, where the conflict in Ukraine has led to repercussions on the cereal markets.
Externí odkaz:
http://arxiv.org/abs/2212.03503