Statistics

2402 Submissions

[2] viXra:2402.0093 [pdf] submitted on 2024-02-18 11:04:32

Second Moment/order Approximations by Kernel Smoothers with Application to Volatility Estimation

Authors: L. Beleña, E. Curbelo, L. Martino, V. Laparra
Comments: 14 Pages.

Volatility estimation and quantile regression are relevant active research areas in statistics, machine learning and econometrics. In this work, we propose two procedures to estimate local variances in generic regression problems by using of kernel smoothers. The proposed schemes can be applied in multidimesional scenarios (not just for time series analysis) and easily in a multi-output framework, as well. Moreover, they allow the possibility of providing uncertainty estimation using a generic kernel smoother technique. Several numerical experiments show the benefits of the proposed methods, even comparing with benchmark techniques. One of these experiment involves a real dataset analysis.
Category: Statistics

[1] viXra:2402.0061 [pdf] submitted on 2024-02-12 07:13:17

Fit Probability Density Function Without Knowing the Form of Distribution

Authors: Dajun Chen
Comments: 2 Pages.

This paper proposes two methods for fitting probability density function only with samples from the distribution. The methods are inspired by Generative Adversarial Networks . The demos run in Pytorch and they are available on https://github.com/chendajunAlpha/Fit-probability-density-function
Category: Statistics