Zobrazeno 1 - 10
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pro vyhledávání: '"Roger , J."'
Risk measures, which typically evaluate the impact of extreme losses, are highly sensitive to misspecification in the tails. This paper studies a robust optimization approach to combat tail uncertainty by proposing a unifying framework to construct u
Externí odkaz:
http://arxiv.org/abs/2412.05234
We introduce a spatiotemporal self-exciting point process $(N_t(x))$, boundedly finite both over time $[0,\infty)$ and space $\mathscr X$, with excitation structure determined by a graphon $W$ on $\mathscr{X}^2$. This graphon Hawkes process generaliz
Externí odkaz:
http://arxiv.org/abs/2409.16903
Segmenting tumors in histological images is vital for cancer diagnosis. While fully supervised models excel with pixel-level annotations, creating such annotations is labor-intensive and costly. Accurate histopathology image segmentation under weakly
Externí odkaz:
http://arxiv.org/abs/2407.10274
Recently, capacitive micromachined ultrasound transducers (CMUTs) with long rectangular membranes have demonstrated performance advantages over conventional piezoelectric transducers; however, modeling these CMUT geometries has been limited to comput
Externí odkaz:
http://arxiv.org/abs/2407.00265
We introduce and develop the concepts of Geometric Backward Stochastic Differential Equations (GBSDEs, for short) and two-driver BSDEs. We demonstrate their natural suitability for modeling continuous-time dynamic return risk measures. We characteriz
Externí odkaz:
http://arxiv.org/abs/2405.09260
Autor:
Ochoa-Oregon, Salvador A., Rentería-Estrada, David F., Hernández-Pinto, Roger J., Sborlini, German F. R., Zurita, Pia
Parton distribution functions play a pivotal role in hadron collider phenomenology. They are non-perturbative quantities extracted from fits to available data, and their scale dependence is dictated by the DGLAP evolution equations. In this article,
Externí odkaz:
http://arxiv.org/abs/2404.15175
Autor:
The LTD Collaboration, Ramírez-Uribe, Selomit, Rentería-Olivo, Andrés E., Rentería-Estrada, David F., de Lejarza, Jorge J. Martínez, Dhani, Prasanna K., Cieri, Leandro, Hernández-Pinto, Roger J., Sborlini, German F. R., Bobadilla, William J. Torres, Rodrigo, Germán
We present the first proof-of-concept application to decay processes at higher perturbative orders of LTD causal unitary, a novel methodology that exploits the causal properties of vacuum amplitudes in the loop-tree duality (LTD) and is directly well
Externí odkaz:
http://arxiv.org/abs/2404.05492
Geometrically convex functions constitute an interesting class of functions obtained by replacing the arithmetic mean with the geometric mean in the definition of convexity. As recently suggested, geometric convexity may be a sensible property for fi
Externí odkaz:
http://arxiv.org/abs/2403.06188
Autor:
Parida, Abhijeet, Jiang, Zhifan, Packer, Roger J., Avery, Robert A., Anwar, Syed M., Linguraru, Marius G.
Image harmonization is an important preprocessing strategy to address domain shifts arising from data acquired using different machines and scanning protocols in medical imaging. However, benchmarking the effectiveness of harmonization techniques has
Externí odkaz:
http://arxiv.org/abs/2402.04426