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In this paper we introduce a generalization of classical risk measures in which the risk is represented by a step function taking two values, corresponding to two endogenously determined market regimes. This extends the traditional…

概率论 · 数学 2026-03-16 Mihaela-Adriana Nistor , Ionel Popescu

In Survival Analysis, the observed lifetimes often correspond to individuals for which the event occurs within a specific calendar time interval. With such interval sampling, the lifetimes are doubly truncated at values determined by the…

统计方法学 · 统计学 2021-03-29 Carla Moreira , Jacobo de Uña-Álvarez , Ana Cristina Santos , Henrique Barros

In this work, we define a family of probability densities involving the generalized trigonometric functions defined by Dr\'abek and Man\'asevich [1], which we name Generalized Trigonometric Densities. We show their relationship with the…

数学物理 · 物理学 2025-04-01 David Puertas-Centeno , Steeve Zozor

Earlier studies have shown that stock market distributions can be well described by distributions derived from Tsallis entropy, which is a generalization of Shannon entropy to non-extensive systems. In this paper, Tsallis relative entropy…

统计金融 · 定量金融 2020-01-29 Sandhya Devi

We study the estimation of the value function for continuous-time Markov diffusion processes using a single, discretely observed ergodic trajectory. Our work provides non-asymptotic statistical guarantees for the least-squares…

机器学习 · 计算机科学 2025-02-07 Wenlong Mou

In this paper, by proposing two new kinds of distributional uncertainty sets, we explore robustness of distortion risk measures against distributional uncertainty. To be precise, we first consider a distributional uncertainty set which is…

风险管理 · 定量金融 2025-08-15 Xiangyu Han , Yijun Hu , Ran Wang , Linxiao Wei

We generalize Quasi-Linear Means by restricting to the tail of the risk distribution and show that this can be a useful quantity in risk management since it comprises in its general form the Value at Risk, the Tail Value at Risk and the…

风险管理 · 定量金融 2025-10-22 Nicole Bäuerle , Tomer Shushi

Recently, Extropy was introduced by Lad, Sanfilippo and Agr\`o as a complement dual of Shannon Entropy. In this paper, we propose dynamic versions of Extropy for doubly truncated random variables as measures of uncertainty called Interval…

概率论 · 数学 2021-12-03 Francesco Buono , Osman Kamari , Maria Longobardi

We present a new temporal logic called Distribution Temporal Logic (DTL) defined over predicates of belief states and hidden states of partially observable systems. DTL can express properties involving uncertainty and likelihood that cannot…

系统与控制 · 计算机科学 2013-10-31 Austin Jones , Mac Schwager , Calin Belta

This paper aims to develop new mathematical and computational tools for modeling the distribution of portfolio returns across portfolios. We establish relevant mathematical formulas and propose efficient algorithms, drawing upon powerful…

计算工程、金融与科学 · 计算机科学 2021-05-17 Ludovic Calès , Apostolos Chalkis , Ioannis Z. Emiris

Quantum states of the electromagnetic field are of considerable importance, finding potential application in various areas of physics, as diverse as solid state physics, quantum communication and cosmology. In this paper we introduce the…

量子物理 · 物理学 2009-11-13 W. B. Cardoso , N. G. de Almeida

Dynamic Time Warping (DTW) is used for matching pairs of sequences and celebrated in applications such as forecasting the evolution of time series, clustering time series or even matching sequence pairs in few-shot action recognition. The…

计算机视觉与模式识别 · 计算机科学 2022-11-02 Lei Wang , Piotr Koniusz

Truncated multivariate distributions arise extensively in econometric modelling when non-negative random variables are intrinsic to the data-generation process. More broadly, truncated multivariate distributions have appeared in censored…

统计理论 · 数学 2019-06-04 Michael Levine , Donald Richards , Jianxi Su

This study evaluates deep neural networks for forecasting probability distributions of financial returns. 1D convolutional neural networks (CNN) and Long Short-Term Memory (LSTM) architectures are used to forecast parameters of three…

风险管理 · 定量金融 2025-09-03 Jakub Michańków

In the optimization under uncertainty, decision-makers first select a wait-and-see policy before any realization of uncertainty and then place a here-and-now decision after the uncertainty has been observed. Two-stage stochastic programming…

最优化与控制 · 数学 2019-08-23 Weijun Xie

For the regression model where the errors follow the elliptically contoured distribution (ECD), we consider the least squares (LS), restricted LS (RLS), preliminary test (PT), Stein-type shrinkage (S) and positive-rule shrinkage (PRS)…

统计理论 · 数学 2012-03-21 M. Arashi , A. K. Md E. Saleh , S. M. M. Tabatabaey

This letter reports two moment extensions of the entropy of a distribution. By understanding the traditional entropy as the average of the original distribution up to a random variable transformation, the traditional moments equation become…

统计力学 · 物理学 2008-03-25 Luciano da Fontoura Costa

Using intraday data for the cross-section of individual stocks, we show that both transitory and persistent fluctuations in realized market and average idiosyncratic volatility, skewness and kurtosis are differentially priced in the…

综合金融 · 定量金融 2024-03-05 Jozef Barunik , Josef Kurka

Models with mixed origins of anomalous subdiffusion have been considered important for understanding transport in biological systems. Here, one such mixed model, the quenched trap model (QTM) on fractal lattices, is investigated. It is…

统计力学 · 物理学 2015-06-22 Tomoshige Miyaguchi , Takuma Akimoto

Gradually Truncated Log-normal distribution - Size distribution of firms Abstract Many natural and economical phenomena are described through power law or log- normal distributions. In these cases, probability decreases very slowly with…

统计力学 · 物理学 2008-12-02 Hari M. Gupta , Jose R. Campanha