We consider the testing and estimation of change-points, locations where distribution abruptly changes, in a sequence observations. Motivated by this problem, contribution we first investigate extremes Gaussian fields with trend, which then help us to give asymptotic p-value approximations likelihood ratio statistics from change-point models.

background : kernel smoothing method is a non-parametric or graphical method for statistical estimation. in the present study was used a kernel smoothing method for finding the death hazard rates of patients with acute myocardial infarction. methods : by employing non-parametric regression methods, the curve estimation, may have some complexity.  in this article, four indices of epanechnikov, b...

Compared with software projects, the estimation of website projects is not mature enough without any methods for size or workload estimation. This paper researched Function Point Analysis (FPA), the most important size estimation method in software projects and then constructed Commerce Website Function Point Analysis (CWFPA) by introducing principles of FPA into commerce website projects. The ...

Previously, an estimation method based on the Stochastic Expectation-Maximization algorithm was studied and proved its relevance for estimating the parameters of a marked point process model in order to achieve unsupervised feature extraction from remote sensing images. This method was only applied to a simple model of a marked point process of circles. In this paper, we extend the proposed est...

This research has been conducted to establish a wheel-point device and evaluate its efficiency (precision, accuracy and time) with respect to the estimation of canopy percent in a pilot Artemisia stand in Khabr region of Baft, Kerman province, Iran in 2015. Several transects with different lengths (30, 60, 90, 120, 150 and 180 m) were established using the randomized sampling block with 5 repli...

The Σ-∆ background estimation is a simple non linear method of background subtraction based on comparison and elementary increment/decrement. We propose here some elements of justification of this method with respect to statistical estimation, compared to other recursive methods: exponential smoothing, Gaussian estimation. We point out the relation between the Σ-∆ estimation and a probabilistic...