Zobrazeno 1 - 10
of 120
pro vyhledávání: '"Jafari, Ali Akbar"'
Autor:
Shaabani, Javad, Jafari, Ali Akbar
The Fama-French model is widely used in assessing the portfolio's performance compared to market returns. In Fama-French models, all factors are time-series data. The cross-sectional data are slightly different from the time series data. A distinct p
Externí odkaz:
http://arxiv.org/abs/2006.02467
Autor:
Jafari, Ali Akbar
Recently, a generalized test approach is proposed by Sadooghi-alvandi et al. (2016) and a fiducial approach is proposed by Xu and Li (2018) to test the equality of coefficients in several regression models with unequal variances. In this paper, it is
Externí odkaz:
http://arxiv.org/abs/1810.09497
This paper utilizes the modified signed log-likelihood ratio method for the problem of inference about the common coefficient of variation in several independent normal populations. This method is applicable for both the problem of hypothesis testing
Externí odkaz:
http://arxiv.org/abs/1707.04112
The exponential distribution is applied in a very wide variety of statistical procedures. Among the most prominent applications are those in the field of life testing and reliability theory. When there are two record samples available for estimating
Externí odkaz:
http://arxiv.org/abs/1609.06819
In this paper, we introduce a new extension of the generalized linear failure rate distributions. It includes some well-known lifetime distributions such as extension of generalized exponential and generalized linear failure rate distributions as spe
Externí odkaz:
http://arxiv.org/abs/1603.03001
Autor:
Jafari, Ali Akbar, Tahmasebi, Saeid
In this paper, we introduce the Gompertz power series class of distributions which is obtained by compounding Gompertz and power series distributions. This distribution contains several lifetime models such as Gompertz-geometric, Gompertz-Poisson, Go
Externí odkaz:
http://arxiv.org/abs/1509.03595
Autor:
Tahmasebi, Saeid, Jafari, Ali Akbar
In this paper, we introduce the generalized Gompertz-power series class of distributions which is obtained by compounding generalized Gompertz and power series distributions. This compounding procedure follows same way that was previously carried out
Externí odkaz:
http://arxiv.org/abs/1508.07634
The log-normal distribution is used to describe the positive data, that it has skewed distribution with small mean and large variance. This distribution has application in many sciences for example medicine, economics, biology and alimentary science,
Externí odkaz:
http://arxiv.org/abs/1508.01782
Autor:
Roozegar, Rasool, Jafari, Ali Akbar
Recently it has been observed that the bivariate generalized linear failure rate distribution can be used quite effectively to analyze lifetime data in two dimensions. This paper introduces a more general class of bivariate distributions. We refer to
Externí odkaz:
http://arxiv.org/abs/1508.01122
Autor:
Jafari, Ali Akbar, Roozegar, Rasool
In this paper, we introduce a new class of bivariate distributions by compounding the bivariate generalized exponential and power-series distributions. This new class contains some new sub-models such as the bivariate generalized exponential distribu
Externí odkaz:
http://arxiv.org/abs/1508.00219