Zobrazeno 1 - 10
of 4 113
pro vyhledávání: '"de Marchi, P."'
Shapley values have seen widespread use in machine learning as a way to explain model predictions and estimate the importance of covariates. Accurately explaining models is critical in real-world models to both aid in decision making and to infer the
Externí odkaz:
http://arxiv.org/abs/2408.08845
Autor:
Bandiziol, Cinzia, De Marchi, Stefano
The aim of the present work is a comparative study of different persistence kernels applied to various classification problems. After some necessary preliminaries on homology and persistence diagrams, we introduce five different kernels that are then
Externí odkaz:
http://arxiv.org/abs/2408.07090
Autor:
De Marchi, Alberto
Necessary optimality conditions in Lagrangian form and the augmented Lagrangian framework are extended to mixed-integer nonlinear optimization, without any convexity assumptions. Building upon a recently developed notion of local optimality for probl
Externí odkaz:
http://arxiv.org/abs/2406.12436
Autor:
De Marchi, Alberto, Themelis, Andreas
Focusing on minimization problems with structured objective function and smooth constraints, we present a flexible technique that combines the beneficial regularization effects of (exact) penalty and interior-point methods. Working in the fully nonco
Externí odkaz:
http://arxiv.org/abs/2406.09901
Publikováno v:
A&A 688, A111 (2024)
Context. A necessary ingredient in understanding the star formation history of a young cluster is knowledge of the extinction towards the region. This has typically been done by making use of the colour-difference method with photometry, or similar m
Externí odkaz:
http://arxiv.org/abs/2405.08445
We compute the flux of relic neutrino background (R$\nu$B) up-scattered by ultra-high-energy (UHE) cosmic rays (CRs) in clusters that act as CR-reservoirs. The long trapping times of UHECRs make this flux larger than that of R$\nu$B up-scattered by U
Externí odkaz:
http://arxiv.org/abs/2405.04568
In this work, we study the Kantorovich variant of max-min neural network operators, in which the operator kernel is defined in terms of sigmoidal functions. Our main aim is to demonstrate the $L^{p}$-convergence of these nonlinear operators for $1\le
Externí odkaz:
http://arxiv.org/abs/2407.03329
Autor:
Habel, Nolan, Nally, Conor, Lenkic, Laura, Meixner, Margaret, De Marchi, Guido, Kavanagh, Patrick J., Fahrion, Katja, Nayak, Omnarayani, Hirschauer, Alec S., Jones, Olivia C., Biazzo, Katia, Brandl, Bernhard R., Jaspers, Jeroen, Pontoppidan, Klaus M., Robberto, Massimo, Rogers, Ciaran, Sabbi, Elena, Sargent, B. A., Soderblom, David R., Zeidler, Peter
We present a JWST imaging survey with NIRCam and MIRI of NGC 346, the brightest star-forming region in the Small Magellanic Cloud (SMC). By combining aperture and point spread function (PSF) photometry of eleven wavelength bands across these two inst
Externí odkaz:
http://arxiv.org/abs/2404.16242
Autor:
Matsuura, Mikako, Boyer, M., Arendt, Richard G., Larsson, J., Fransson, C., Rest, A., Ravi, A. P., Park, S., Cigan, P., Temim, T., Dwek, E., Barlow, M. J., Bouchet, P., Clayton, G., Chevalier, R., Danziger, J., De Buizer, J., De Looze, I., De Marchi, G., Fox, O., Gall, C., Gehrz, R. D., Gomez, H. L., Indebetouw, R., Kangas, T., Kirchschlager, F., Kirshner, R., Lundqvist, P., Marcaide, J. M., Martí-Vidal, I., Meixner, M., Milisavljevic, D., Orlando, S., Otsuka, M., Priestley, F., Richards, A. M. S., Schmidt, F., Staveley-Smith, L., Smith, Nathan, Spyromilio, J., Vink, J., Wang, Lifan, Watson, D., Wesson, R., Wheeler, J. C., Woodward, C. E., Zanardo, G., Alp, D., Burrows, D.
JWST/NIRCam obtained high angular-resolution (0.05-0.1''), deep near-infrared 1--5 micron imaging of Supernova (SN) 1987A taken 35 years after the explosion. In the NIRCam images, we identify: 1) faint H2 crescents, which are emissions located betwee
Externí odkaz:
http://arxiv.org/abs/2404.10042
Autor:
Fahrion, Katja, Böker, Torsten, Perna, Michele, Beck, Tracy L., Maiolino, Roberto, Arribas, Santiago, Bunker, Andrew J., Charlot, Stephane, Ceci, Matteo, Cresci, Giovanni, De Marchi, Guido, Lützgendorf, Nora, Ulivi, Lorenzo
Publikováno v:
A&A 687, A83 (2024)
We present a detailed study of the centre of NGC4654, a Milky Way-like spiral galaxy in the Virgo cluster that has been reported to host a double stellar nucleus, thus promising a rare view of ongoing star cluster infall into a galaxy nucleus. Analys
Externí odkaz:
http://arxiv.org/abs/2404.08910